Very good,,, yours is one of the better videos I've seen in this topic . Right to the point. Your video is an A+ in my book. You're awesome dude, because of other videos, I've been chasing the wrong sensor the whole time. Thank you again.
Hay Bundy, thank you very much. My fans were not coming on and I followed step by step where to check. The last part where the thermo switch, I couldn't find a damn wire to test the thermo switch, but finally did and tested it and the fans came on. 10:20pm finally figure this crap out. I've been trying to see what it was since 7pm. But now I know what it is and tomorrow I'll be getting this part and fixing it tomorrow. Thanks man. Saved me a lot of money. Question, my AC ain't working. How do I check to see what's wrong? LoL
Great video. After reading the threads below, it seems that I have a similar problem common to a lot of people. My radiator fan (Cooling fan, passenger side), only comes on when I turn on the AC. The fan obviously works and I've replaced the all the sensors related to the cooling system. The AC condenser fan comes on when the coolant reaches a certain temperature and when you turn on the AC. I don't remember the radiator fan ever coming on without turning on the AC. One confused DYI individual.
Did you find a solution?,i have the same problem btw. I suspect the radiator switch that is a bimetallic type of switch that closes at 200 degrees farenheit.
SAE on a Honda. so sad. :/ use a 24mm Deep well socket! Down with SAEdecent video, though, if somewhat slow. last request would be to go further on possible problems. what if it's not the thermo switch?
The function of those various thermoswtiches on Hondas is very confusing.. Years ago, I discovered that even the people at the Honda dealership Parts counter didn't understand them. I needed that one replaced in this vid, but they kept giving me the one that controls the engine block fan after key has been turned off.
HOLY COW. BUNDY YOU THE GOAT. My Temp keeps rising first I thought it was a bad thermostat so I changed it. Kept rising then I noticed my fans weren't working anymore so I did tested the fuses and switch the cooling fan relays and now I see and hope that this may be the solution to my problem if not then it probably time for some new fans but hope its this. Very very helpful video.
I think I have a ground problem. Both fans work when connected straight to the battery. I've done the jumper wire from that switch and only the AC fan kicks on. Went down the line to the sensor on the water outlet for the top hose and I just hear a click coming from the relay. I've swapped them out, like in the video and it does the same thing. That's why I'm thinking bad ground, but not sure exactly where it is located on the car for that particular wire.
This 95 accord 2.2L has me puzzled. Fuses under hood and dash and relays are fine. Both fans work when I shorted the wire by the thermostat housing. When I short the wire on the coolant temp switch from the upper hose, the passenger side fan works. Both coolant temp switches I replaced but still the fans don't work. I also replaced the coolant temp sensor under distributor cap. Tstat was also replaced. I take it for a drive to get to temperature (10-15mins), drive back home and let idle but the fans don't kick in at all. Anything obvious I missed? Thank you.
I have the same issue with Honda Accord EX 1990, I changed all sensors, thermostat, Radiators, radiator cooling liquid, I checked 12V. from coolant temp switch wiring is okay , fans are working with jumper, Relays were replaced, this issue are make me crazy. If you found the issue let me know, Thanks!!!!
@@vberemix It's winter now here so the car will have to wait till Spring/Summer. Now since the belts are due to replacement, I'm going to replace the water pump as well, the WP may be the issue.
I have a 97 prelude the passenger side fan comes on when I turn the AC on but the driver side fan doesn't and the car overheats when sitting still I straight wired the driver side fan to the battery and it comes on ...what would cause this ..would it be that thermo fan switch? If so how come only one fan comes on.mi thought both fans are supposed to run together
I love your videos.....I have a 2005 Acura MDX......my ac stops working when I’m idling sometimes.....my fans come on & off especially on driver side.....I changed relays & fuses......what is part number for the thermo switch you showed in this video? Thx. Pat in Orlando
I have a 98 honda accord and I followed every step you did and the same issue I replaced the sensor and still the fans are not coming on any suggestions
I'm just watching for educational purposes.. but I'm a little confused. How exactly does the bridging of the harness connector making the fan turn on determine that the "thermo" switch is bad?
I have same issue with Honda Accord EX 1990, I changed all sensors, thermostat, Radiators, radiator cooling liquid, I checked 12V. from coolant temp switch wiring is okay , fans are working with jumper, Relays were replaced, this issue are make me crazy.
Hi Mr. Bundy It's a wonderful video!!!!! I replaced thermostat with 2 water temperature sensors same time. After this job, my cooling fan didnt work. Fan' moter worked well. What do I do? My car Odyssey 2009, coming 160 thousand miles. Thanks in advance!!
I'm confused when said "if the engine cools down too much or if it's not warm you can do the test"! I thought you mean it has to be a lil warm for it to work!
What if fan comes on after the engine is off. With it showing all the time normal. No hot or move past normal place on gauge in side car. What to check or look for, please?
Hi, I have 2007 Acura TL 3.2L my radiator fan is not working but I followed your step checked Both Radiator fan are working good, my coolant fan fuse is good and I took the fan switch off and bypass like you said and fan didn’t turn on so what can be the cause. I have not test the fan relay yet will do that . Any help appreciated thanks
I am the same problem with my 98 Acura CL 2.3. The fans are not working at all, tried jumping the fans with 12v power without success. I also switched out the relays but the fans still didn't work. However, I had the car in the off position. Would this make a difference? Unfortunately, I didn't check the Thermo Fan Switch. I will attempt to test and hopefully that will resolve my issue. Great video....
I followed the video step by step and my fans worked when connected to power switched relays but when I bridged the wire from the the lower radiator housing only the fan on the driver side turned on any other suggestions ? Thanks. On a 1992 Honda Accord 2.2
Mr. Bundy I’m stuck in a pickle, I have a 2007 Acura TL and my radiator fan refuse to kick in. I check the fuse the relay and swap them and there working but the cooling or radiator fan refuse to kick in. I bought a new radiator assembly and still doesn’t kick in. The only thing strange is that I notice the temperature went up a bit and that when I notice the radiator fan was working. But I turn off the car and ac and start what after and the temperature look like it was never up, so at this point I’m think the coolant temperature sensor? So if you have any idea it would be helpful I’m al ears
What’s your coolant level at? If it’s low too off the system. Also yes it could be your temp sensor. You can always loop the two wires together that go into the temp sensor and if the fan kicks on you know you have a bad sensor.
BundysGarage visually I can see coolant in the radiator but I will get some and top it off, as far as looping the wire in not sure how do it I seen the video you posted but couldn’t really tell where you actually put the wire to loop it in the harness. This particular model Tl has two coolant sensor one the bottom of radiator the other at the thermostat housing. Now very important I forgot to say that recently change my hid bulb and there was a major ground wire that look like it feed the radiator fan switch cause I noticed after that the high beam function doesn’t turn on and so doesn’t the radiator fan.
I bridged the temp switch harness and fan started up. I took old temp switch out and put new one in and ran the car to make it hot and the fan didn’t come on. Any suggestions?
hi,i hop you can help me, the fan on my 1997 acura cl don t work, so i do like the video and i jumped the switch, rifght now my booth fans are working when my engine is cold and the Ac is off !!! if i fut the on the power position or i turn one the car, booth fan turne right away..? do you have plz any idea
I have a quick question if only one of my fan works and the other one doesn't kick on does that mean one blow and the one that's working is not blowing the air towards the radiator it's blowing towards the motor does that mean there's a short circuit somewhere
Does that fan switch on the thermostat housing control both fans? I bypass that switch and both fan come on, The main fan and the AC fan too. Does that switch work both at different temps?
My sisters car is a 200 Honda Accord with a 2.3 and the fans only turn on when the ac is on. I checked everything you mentioned and I even replaced the thermal sensor and they still won’t turn on. Any suggestions would be greatly appreciated. Nice video and very informative too.
I took a paper clip and bridged the harness like you did in the video and the fans did come on, so that means the relays are good right? @@bundysgarage
Ok so my problem happens to be a the thermo fan switch. Can you link the part so I can order it or go into auto zone to get the exact part. Pretty please
So, if when you jump the harness the fans do not come on, what could be the issue? I have verified that the relays are good (all of them), the fans are good and that the fuses are good. Anyone have any suggestions?
I Jumped It out And Only The Passenger Side Fan Came On .. Now What ? Thanks ... Oh And I Tested Both Fans And They Run Jumped Out To The Battery.. 96 Honda Accord 2.2 ...
To which terminal on the battery do I connect the lead wire that I connect to the 12V pin in the plug? You didn't mention it, and I just want to be sure! Sorry, and thanks. I'm taking notes here. :-)
equesfuscus No worries. To which terminal on the battery do I connect the lead wire that I connect to the 12V pin in the plug? Connect it to the positive (+) terminal off of the battery to the connection on the fan side.
I have a honda odyssey 2005 , the problem with my van is that the fans dont turn off even if i turn the car off, i have to unplug the sensor so it can turn off, what can i do or check???
Jairo Castellanos That is actually normal operation. If it's really hot out and the engine has been idling for a long time or is really warm the fans will stay on even with the engine shut OFF and the key out. It cools the engine so no damage will be caused by a hot block. I would check the coolant level in the radiator and the reservoir bottle and make sure they are at the proper levels. Only check the coolant levels when the engine is COLD, or you could end up burning yourself or someone near by, cooling systems are under extreme pressure, it's like a pressure cooker.
It sounds like its your coolant sensor gone bad. Its a pretty simple fix and I believe the part is less than $40. Send me your email address and I will send you some instructions on how to fix it.
I have an opposite issue. My cooling fans will not shut off. As soon as I turn the heater or A/C on bot fans come on as well. I know that when on A/C the fans will come on, but not when on heat. That's regardless if the engine is warm or cold. Is this normal on an 1997 Acura CL 4-cyl. ?
When the fan turns on when the car is off means the regular sensor senses the engine is really hot or close to over heating and it will fill itself down when the car is off.
+renz acedo check your coolant level. When was the last time you changed your thermostat? If the engine gets hot while driving and you shut it off, the fan will kick on to cool the engine down, even with the car off. But check the 2 items I mentioned above. Usually it's a sign of something else going on.
@@bundysgarage A sign of something else going wrong. Yeap. Something else like what? because i'm having the same situation than renz acedo. Please answer. My fans only kick on when i shut off the car. Those fans don't ever come on when the car is running. The gauge never touch the red line but it comes closer sometimes. When the gauge goes up i always shut it off and the fan on the passenger side kicks on to cool it down. Under the hood there's sing of leaking coolant on the cap and the cap of the reservoir. It boils.. By the way: mine is f22b1.
Well when was the last time you checked your coolant level? Sounds like you have a coolant leak somewhere. Have the system pressure tested and fix the leak first before doing anything else
BundysGarage question. I replaced both sensors. ( thermostat outlet and the one by the upper radiator hose ) . Aswell as new fan. New radiator and new thermostat. Fan only comes on when I shut off the car completely ( after it’s at running temp ) .. I didn’t properly bleed the system after thermostat replacement - keep messing that up at the bleeder screw - rusted bolts + lack of discipline strength .. any ideas I did catch the ground wire at the thermostat looks like crap, however if the ground wire was no good, then the fan wouldn’t turn on at all
Hi Jim I have a Honda Accord 2.3 v-tec the fans don't turn on so I did a bridge on the thermal fan switch and the fans turn on so I replaced the fan switch but now the fans don't turn on only when I turn the AC unit on the fans turn on what could the problem be please could you help me thank you so much.
Hi, what about if I can hear the fan kicking it, but then it stops, I play with the wire by the connector and the fan kicks in, it seems as though its a wire that's coming from the car, but not the actual fan. I don't know how to explain it.
@@bundysgarage yeah, that's what I think it could be the connector on the fan itself or the wire that's coming from the fuse box or something, idk. I can hear the relays clicking too...and Ac and heat fan works, as i changed the cool temp switch I can hear the clicks, but touching the wiring somewhere I have not pin pointed as yet it comes on fan ..I even tried hitting the fan and it's like it kind ah want to spin, so I idk if I should buy both fans or whatever but idk lol
+jose Torres You check the fuses? You sure it's the correct relay you replaced? Are you sure you are getting power to the fans? Check for 12V at the connector to the fan.
+BundysGarage I check the replay , check the fuses everything's good. I check for voltages and everything's 12v except on the relay which is 12v 13 v and 14v on 3 different pins. I spend all fay today and I still couldn't figure it out
My air vent gets no air hot or cold is it because the radiator fans don't turn on when I'm driving is at normal temperature but if I'm in a line let say at Starbucks for like 10min waiting it starts rising temperature until I drive off it goes back to normal temperature
Can I just install a tungle switch the fans are separated so when I want ac I could just flip the switch to turn on radiator passenger fan and then I could use the ac or heat and when I'm in Starbucks and is starts getting hot just flip the switch on the driver side radiator fan
So if you jump the connector at the fan switch on the t-stat housing, and the fans come on, does that mean that the relay is good? Trying to narrow down my issue thanks for the video
still chasing this ghost problem with my fans. I have replaced the T-stat, the thermo switch, the other coolant sensor on the block, flushed radiator and block, burped all air from system. made the fans come on with direct power. but still they will not come on when im driving or idling at all and its causing steam to leave my radiator cap. ive never taken it to a mechanic before but i am running out of ideas. everything on the internet says the fans should be working, but they aren't. extremely frustrated today.
Thanks, ill try to change coolant fan switch and let you know if that fixes the problem. Also, heat is good while driving and stop driving blow cold air thermostat is new why?
If you have not changed the coolant in a long time, 100,000 miles plus, yes go ahead and replace it. If you are replacing all of the coolant than drain the block and the radiator. If it has been changed recently then just replace the coolant that is lost when you replace the timing belt. Yes coolant will come from the thermostat housing.
+BundysGarage I've replaced the coolant cause I had to replace my heater hose from engine to heater air valve the hose got mushy from oil and deter ates it. Put new coolant and let my car idle and fans never came on,just bought a new fan switch today.
Hey Bundy Quick Question I just did this test and my fans came on pretty low at first then started to slowly pick up speed, does that means the fans it's the fans not running strong enough to cool down ? Also what's that part called you switched out "radiator sensor hose clip"?
Thermo fan switch got it. Ok so my fans came on at a low speed. Meaning my thermo switch is bad then right ? But then my fans were starting to pick up speed after 5mins does this mean I should still switch my fans out ? Or just the thermo temp switch or shall I do both to be safe ? I'm gonna try the thermo switch first and see what goes on from there.
I have a quick question if only one of my fan works and the other one doesn't kick on does that mean one blow and the one that's working is not blowing the air towards the radiator it's blowing towards the motor does that mean there's a short circuit somewhere
Very good,,, yours is one of the better videos I've seen in this topic . Right to the point. Your video is an A+ in my book.
You're awesome dude, because of other videos, I've been chasing the wrong sensor the whole time.
Thank you again.
Very, very helpful, you are the man for taking the time to help others out
You rock dude..this fixed my 98 CL it had 2 different fan switch sensors.
Yeah... This video is sold gold.
Based on other videos I've watched, I've been chasing the wrong sensor the whole time.... This video is SOLID GOLD.
Thanks very much for the help.Mine problem turned out to be the temp sensor.
I'll try it and give more feedback later. So far it was very helpful how to troubleshoot the problem.
Hay Bundy, thank you very much. My fans were not coming on and I followed step by step where to check. The last part where the thermo switch, I couldn't find a damn wire to test the thermo switch, but finally did and tested it and the fans came on. 10:20pm finally figure this crap out. I've been trying to see what it was since 7pm. But now I know what it is and tomorrow I'll be getting this part and fixing it tomorrow. Thanks man. Saved me a lot of money.
Question, my AC ain't working. How do I check to see what's wrong? LoL
Great video. After reading the threads below, it seems that I have a similar problem common to a lot of people. My radiator fan (Cooling fan, passenger side), only comes on when I turn on the AC. The fan obviously works and I've replaced the all the sensors related to the cooling system. The AC condenser fan comes on when the coolant reaches a certain temperature and when you turn on the AC. I don't remember the radiator fan ever coming on without turning on the AC. One confused DYI individual.
Did you find a solution?,i have the same problem btw. I suspect the radiator switch that is a bimetallic type of switch that closes at 200 degrees farenheit.
Great video man, going to try it on my 4th gen Prelude F22. Fans not working. Thank you bud and once again great video.
Thank you very much going to try this on my days off!
SAE on a Honda. so sad. :/ use a 24mm Deep well socket! Down with SAEdecent video, though, if somewhat slow. last request would be to go further on possible problems. what if it's not the thermo switch?
Great and very helpful video. How about a bad condenser fan video???
It sure help me,thanks for taking the time to do this.
Great information here. I am having the same issue, and am now glad I looked this up on TH-cam. Thanks.
Sir, thank you so much. Love you. From Australia
Your welcome!
The function of those various thermoswtiches on Hondas is very confusing.. Years ago, I discovered that even the people at the Honda dealership Parts counter didn't understand them. I needed that one replaced in this vid, but they kept giving me the one that controls the engine block fan after key has been turned off.
HOLY COW. BUNDY YOU THE GOAT.
My Temp keeps rising first I thought it was a bad thermostat so I changed it. Kept rising then I noticed my fans weren't working anymore so I did tested the fuses and switch the cooling fan relays and now I see and hope that this may be the solution to my problem if not then it probably time for some new fans but hope its this. Very very helpful video.
Cars keys have to be on and it has to be warmed up as well. Watch this video, guy breaks it down amazingly. th-cam.com/video/HO7IQuRbDIU/w-d-xo.html
Cars keys have to be on and it has to be warmed up as well. Watch this video, guy breaks it down amazingly. th-cam.com/video/HO7IQuRbDIU/w-d-xo.html
I think I have a ground problem. Both fans work when connected straight to the battery. I've done the jumper wire from that switch and only the AC fan kicks on. Went down the line to the sensor on the water outlet for the top hose and I just hear a click coming from the relay. I've swapped them out, like in the video and it does the same thing. That's why I'm thinking bad ground, but not sure exactly where it is located on the car for that particular wire.
This 95 accord 2.2L has me puzzled. Fuses under hood and dash and relays are fine. Both fans work when I shorted the wire by the thermostat housing. When I short the wire on the coolant temp switch from the upper hose, the passenger side fan works. Both coolant temp switches I replaced but still the fans don't work. I also replaced the coolant temp sensor under distributor cap. Tstat was also replaced. I take it for a drive to get to temperature (10-15mins), drive back home and let idle but the fans don't kick in at all. Anything obvious I missed? Thank you.
I have the same issue with Honda Accord EX 1990, I changed all sensors, thermostat, Radiators, radiator cooling liquid, I checked 12V. from coolant temp switch wiring is okay , fans are working with jumper, Relays were replaced, this issue are make me crazy. If you found the issue let me know, Thanks!!!!
@@vberemix It's winter now here so the car will have to wait till Spring/Summer. Now since the belts are due to replacement, I'm going to replace the water pump as well, the WP may be the issue.
I have a 97 prelude the passenger side fan comes on when I turn the AC on but the driver side fan doesn't and the car overheats when sitting still I straight wired the driver side fan to the battery and it comes on ...what would cause this ..would it be that thermo fan switch? If so how come only one fan comes on.mi thought both fans are supposed to run together
Dealing with the same shit honda civic
Hey I have one question. What if the wiring harness of the radiator fan switch doesn't come on when you put the wires in, what can it be
+daniel mejia Your fans could be broken and need replacing. Check out rockauto.com for great pricing.
I love your videos.....I have a 2005 Acura MDX......my ac stops working when I’m idling sometimes.....my fans come on & off especially on driver side.....I changed relays & fuses......what is part number for the thermo switch you showed in this video? Thx. Pat in Orlando
GREAT VIDEO... VERY EDUCATIONAL...
Will a bad temperature sensor cause both fans not to work? The condenser fan works but not the radiator fan on my 1998 Honda Accord 2.3
I have a 98 honda accord and I followed every step you did and the same issue I replaced the sensor and still the fans are not coming on any suggestions
Thank you for your videos
Need more mechanics like you on god
Thanks 😊
I'm just watching for educational purposes.. but I'm a little confused. How exactly does the bridging of the harness connector making the fan turn on determine that the "thermo" switch is bad?
I have same issue with Honda Accord EX 1990, I changed all sensors, thermostat, Radiators, radiator cooling liquid, I checked 12V. from coolant temp switch wiring is okay , fans are working with jumper, Relays were replaced, this issue are make me crazy.
Hi Mr. Bundy
It's a wonderful video!!!!!
I replaced thermostat with 2 water temperature sensors same time. After this job, my cooling fan didnt work. Fan' moter worked well. What do I do? My car Odyssey 2009, coming 160 thousand miles. Thanks in advance!!
I'm confused when said "if the engine cools down too much or if it's not warm you can do the test"! I thought you mean it has to be a lil warm for it to work!
What if fan comes on after the engine is off. With it showing all the time normal. No hot or move past normal place on gauge in side car. What to check or look for, please?
very hwlpful, thanks! mine was the fuse...
I got a wire from the battery to the fans and they turn on
My are the fan switch.. so I did the by pass from the battery and used a targo switch.
Hi, I have 2007 Acura TL 3.2L my radiator fan is not working but I followed your step checked Both Radiator fan are working good, my coolant fan fuse is good and I took the fan switch off and bypass like you said and fan didn’t turn on so what can be the cause. I have not test the fan relay yet will do that . Any help appreciated thanks
I am the same problem with my 98 Acura CL 2.3. The fans are not working at all, tried jumping the fans with 12v power without success. I also switched out the relays but the fans still didn't work. However, I had the car in the off position. Would this make a difference? Unfortunately, I didn't check the Thermo Fan Switch. I will attempt to test and hopefully that will resolve my issue. Great video....
This video was very helpful
Great video. Very helpful. Thanks
+Ryan Galindo check out my other videos too
I followed the video step by step and my fans worked when connected to power switched relays but when I bridged the wire from the the lower radiator housing only the fan on the driver side turned on any other suggestions ? Thanks.
On a 1992 Honda Accord 2.2
Mr. Bundy I’m stuck in a pickle, I have a 2007 Acura TL and my radiator fan refuse to kick in. I check the fuse the relay and swap them and there working but the cooling or radiator fan refuse to kick in. I bought a new radiator assembly and still doesn’t kick in. The only thing strange is that I notice the temperature went up a bit and that when I notice the radiator fan was working. But I turn off the car and ac and start what after and the temperature look like it was never up, so at this point I’m think the coolant temperature sensor? So if you have any idea it would be helpful I’m al ears
What’s your coolant level at? If it’s low too off the system. Also yes it could be your temp sensor. You can always loop the two wires together that go into the temp sensor and if the fan kicks on you know you have a bad sensor.
BundysGarage visually I can see coolant in the radiator but I will get some and top it off, as far as looping the wire in not sure how do it I seen the video you posted but couldn’t really tell where you actually put the wire to loop it in the harness. This particular model Tl has two coolant sensor one the bottom of radiator the other at the thermostat housing. Now very important I forgot to say that recently change my hid bulb and there was a major ground wire that look like it feed the radiator fan switch cause I noticed after that the high beam function doesn’t turn on and so doesn’t the radiator fan.
You the man 👍🏾👍🏾
Great help. Thank you
Did both fans come one when you connected a small piece of wire to the wire harness connected to the thermo switch?
I bridged the temp switch harness and fan started up. I took old temp switch out and put new one in and ran the car to make it hot and the fan didn’t come on. Any suggestions?
hi,i hop you can help me, the fan on my 1997 acura cl don t work, so i do like the video and i jumped the switch, rifght now my booth fans are working when my engine is cold and the Ac is off !!! if i fut the on the power position or i turn one the car, booth fan turne right away..? do you have plz any idea
Do you know how to tell if it’s the timer
I have a quick question if only one of my fan works and the other one doesn't kick on does that mean one blow and the one that's working is not blowing the air towards the radiator it's blowing towards the motor does that mean there's a short circuit somewhere
Does that fan switch on the thermostat housing control both fans? I bypass that switch and both fan come on, The main fan and the AC fan too. Does that switch work both at different temps?
Ok so if u test the wire harness and your fans dnt turn on does that mean its the harness thats at fault ?
Thanks great video listen bro i own a honda odessy 99 and is doing the same i will try to do that
My sisters car is a 200 Honda Accord with a 2.3 and the fans only turn on when the ac is on. I checked everything you mentioned and I even replaced the thermal sensor and they still won’t turn on. Any suggestions would be greatly appreciated. Nice video and very informative too.
I have same issue as you, replaced the thermal sensor switch and still wont come on
You check the relay?
I took a paper clip and bridged the harness like you did in the video and the fans did come on, so that means the relays are good right? @@bundysgarage
Thank you, very helpful video. subscribed.
+Andre Hessami thanks for the sub and glad the video helped you out.
Ok so my problem happens to be a the thermo fan switch. Can you link the part so I can order it or go into auto zone to get the exact part. Pretty please
What’s the year, make, and model of your vehicle and what type of engine do you have? Or just send me the VIN.
thanks very much
+Jose Mora you are welcome
So, if when you jump the harness the fans do not come on, what could be the issue?
I have verified that the relays are good (all of them), the fans are good and that the fuses are good.
Anyone have any suggestions?
Did you ever figure this out? I'm having the same problem
I Jumped It out And Only The Passenger Side Fan Came On .. Now What ? Thanks ... Oh And I Tested Both Fans And They Run Jumped Out To The Battery.. 96 Honda Accord 2.2 ...
verrryyyyyy helpful. Thanks
To which terminal on the battery do I connect the lead wire that I connect to the 12V pin in the plug? You didn't mention it, and I just want to be sure! Sorry, and thanks. I'm taking notes here. :-)
equesfuscus No worries. To which terminal on the battery do I connect the lead wire that I connect to the 12V pin in the plug? Connect it to the positive (+) terminal off of the battery to the connection on the fan side.
Thank you!
Thanks!!!!
I have same car and same problem... but my fans work only when I turn on AC or heater... can it still be the switch? Or something else?
Check your coolant level.
98 acura tl 2.5 and I can't find the cooling fan relay any ideas?
Great Vid man! Thank you!
+Jimmy baez no problem, your welcome
I have a honda odyssey 2005 , the problem with my van is that the fans dont turn off even if i turn the car off, i have to unplug the sensor so it can turn off, what can i do or check???
Jairo Castellanos That is actually normal operation. If it's really hot out and the engine has been idling for a long time or is really warm the fans will stay on even with the engine shut OFF and the key out. It cools the engine so no damage will be caused by a hot block. I would check the coolant level in the radiator and the reservoir bottle and make sure they are at the proper levels. Only check the coolant levels when the engine is COLD, or you could end up burning yourself or someone near by, cooling systems are under extreme pressure, it's like a pressure cooker.
The thing is that coolant is at the rite level, even if i turn off the car the fans stayed on for hours if i leave them if dont unplug the sensor
It sounds like its your coolant sensor gone bad. Its a pretty simple fix and I believe the part is less than $40. Send me your email address and I will send you some instructions on how to fix it.
I have an opposite issue. My cooling fans will not shut off. As soon as I turn the heater or A/C on bot fans come on as well. I know that when on A/C the fans will come on, but not when on heat. That's regardless if the engine is warm or cold. Is this normal on an 1997 Acura CL 4-cyl. ?
Check your coolant level.
Thanks so much..!!!. Is so helpfull ...!!!
Arent there 2 fan switches? One that turns on while youre vehicle is off? Can you please tell me where that the second one is located?
Thanks
When the fan turns on when the car is off means the regular sensor senses the engine is really hot or close to over heating and it will fill itself down when the car is off.
what if you turn the key off and still the fans is working?what could be the culprit?
+renz acedo check your coolant level. When was the last time you changed your thermostat? If the engine gets hot while driving and you shut it off, the fan will kick on to cool the engine down, even with the car off. But check the 2 items I mentioned above. Usually it's a sign of something else going on.
@@bundysgarage A sign of something else going wrong. Yeap. Something else like what? because i'm having the same situation than renz acedo. Please answer. My fans only kick on when i shut off the car. Those fans don't ever come on when the car is running. The gauge never touch the red line but it comes closer sometimes. When the gauge goes up i always shut it off and the fan on the passenger side kicks on to cool it down. Under the hood there's sing of leaking coolant on the cap and the cap of the reservoir. It boils..
By the way: mine is f22b1.
Well when was the last time you checked your coolant level? Sounds like you have a coolant leak somewhere. Have the system pressure tested and fix the leak first before doing anything else
Mines turn on after I have turned my car off. Why is that?
Hi BUNDYS GARAGE, I would like to know where the cooling fans temperature switches located on 2000 Acura TL, please tell me where is it.
+Chhath Chhuong it's located near the thermostat not on the thermostat housing but just to the left on the metal line.
Did the problem get fixed on that car? Would’ve been nice to see if it was
Yes it did
BundysGarage question. I replaced both sensors. ( thermostat outlet and the one by the upper radiator hose ) . Aswell as new fan. New radiator and new thermostat. Fan only comes on when I shut off the car completely ( after it’s at running temp ) .. I didn’t properly bleed the system after thermostat replacement - keep messing that up at the bleeder screw - rusted bolts + lack of discipline strength .. any ideas
I did catch the ground wire at the thermostat looks like crap, however if the ground wire was no good, then the fan wouldn’t turn on at all
You can just turn the heat on max to see if the fan works.
Hi Jim I have a Honda Accord 2.3 v-tec the fans don't turn on so I did a bridge on the thermal fan switch and the fans turn on so I replaced the fan switch but now the fans don't turn on only when I turn the AC unit on the fans turn on what could the problem be please could you help me thank you so much.
Could be your fan relay
Good job!
Hi, what about if I can hear the fan kicking it, but then it stops, I play with the wire by the connector and the fan kicks in, it seems as though its a wire that's coming from the car, but not the actual fan. I don't know how to explain it.
Sounds like you have a short somewhere.
@@bundysgarage yeah, that's what I think it could be the connector on the fan itself or the wire that's coming from the fuse box or something, idk. I can hear the relays clicking too...and Ac and heat fan works, as i changed the cool temp switch I can hear the clicks, but touching the wiring somewhere I have not pin pointed as yet it comes on fan ..I even tried hitting the fan and it's like it kind ah want to spin, so I idk if I should buy both fans or whatever but idk lol
Thank u for help ..u save me some money :)
hi. I was wondering if you know where can I find parts for an old 1987 honda crx-si. Ive hard time looking at it. thanks for any help.
Try rockauto.com
Will this work on a 1998 Acura RL 6cyl.?
+Monty Badger yes, same principal
I replace every sensor and relay and fan, and the thing still doesn't turn on what else could it be
+jose Torres You check the fuses? You sure it's the correct relay you replaced? Are you sure you are getting power to the fans? Check for 12V at the connector to the fan.
+BundysGarage I check the replay , check the fuses everything's good. I check for voltages and everything's 12v except on the relay which is 12v 13 v and 14v on 3 different pins. I spend all fay today and I still couldn't figure it out
If you have 12V at the connector you might have a grounding issue?
My air vent gets no air hot or cold is it because the radiator fans don't turn on when I'm driving is at normal temperature but if I'm in a line let say at Starbucks for like 10min waiting it starts rising temperature until I drive off it goes back to normal temperature
97 honda accord
Can I just install a tungle switch the fans are separated so when I want ac I could just flip the switch to turn on radiator passenger fan and then I could use the ac or heat and when I'm in Starbucks and is starts getting hot just flip the switch on the driver side radiator fan
So if you jump the connector at the fan switch on the t-stat housing, and the fans come on, does that mean that the relay is good? Trying to narrow down my issue thanks for the video
Yes
still chasing this ghost problem with my fans. I have replaced the T-stat, the thermo switch, the other coolant sensor on the block, flushed radiator and block, burped all air from system. made the fans come on with direct power. but still they will not come on when im driving or idling at all and its causing steam to leave my radiator cap. ive never taken it to a mechanic before but i am running out of ideas. everything on the internet says the fans should be working, but they aren't. extremely frustrated today.
Did you ever figure this out. I'm having this problem
hi can u tell me haw work switch . ?
just saved me 70 dollars part plus labor
Glad it helped you out
Awesome ✌
I did everything you did and they're still not turning on
Radiator fan only turns on when ac is on. If ac is off fan don't turn on why?
+Jay Hernandez most likey your thermostatic switch which contols the fans is bad.
+Jay Hernandez take a look ay this article , its helped me several times:
techauto.awardspace.com/overheating.html
Thanks, ill try to change coolant fan switch and let you know if that fixes the problem. Also, heat is good while driving and stop driving blow cold air thermostat is new why?
Thanks.
i have the same problem on 2002 acura rl. where is the termostatic switch located?
I did all of this and my fans still are not working
I did everything he did in the video twice. nothing couldn't get anything to turn on!
Did you test the fans to make sure they work?
BundysGarage I tried but they did not turn on. But I have a very peculiar issue. My 93 Accord has a 93 Prelude swapping and I did not do the swap.
You connected the fans directly to a car battery to see if they would turn on? If they didn’t then your fans are bad.
BundysGarage well I'll try it on my friend's car to see if I'm doing it right and it's his turn on then I'll know for sure.
ive done everything in this video and my fan still wont turn on after 2 new switches please help
Are you sure the fans work when they are hooked up directly to the battery?
Daniel Lopez same here with my car, did everything on this video no luck. did you get you're fans working
Replace the coolant fan switch.
do you need to drain the coolant? will coolant come out of the thermostat housing. .
If you have not changed the coolant in a long time, 100,000 miles plus, yes go ahead and replace it. If you are replacing all of the coolant than drain the block and the radiator. If it has been changed recently then just replace the coolant that is lost when you replace the timing belt. Yes coolant will come from the thermostat housing.
+BundysGarage I've replaced the coolant cause I had to replace my heater hose from engine to heater air valve the hose got mushy from oil and deter ates it. Put new coolant and let my car idle and fans never came on,just bought a new fan switch today.
Have you checked your relays and make sure the coolant level is good and topped off.
+BundysGarage I jumped the plug and fans do come on. Fluid was topped off and bled out. My car overheated cuz the heater hose was bad and cracked.
Man that's a bummer that the hose split. How long was that hose on there for? Out of curiosity.
Hey Bundy Quick Question I just did this test and my fans came on pretty low at first then started to slowly pick up speed, does that means the fans it's the fans not running strong enough to cool down ?
Also what's that part called you switched out "radiator sensor hose clip"?
Thermo fan switch got it. Ok so my fans came on at a low speed. Meaning my thermo switch is bad then right ?
But then my fans were starting to pick up speed after 5mins does this mean I should still switch my fans out ? Or just the thermo temp switch or shall I do both to be safe ?
I'm gonna try the thermo switch first and see what goes on from there.
My fan only comes on if I turn my ac on
Same here.Did you find a solution?. I suspect the radiator switch that is a bimetallic type of switch that closes at 200 degrees farenheit.
Same here did you figure it out? I just ordered the a new engine coolant temp sensor and I'm hoping that's what is needed
Do you know the part number for the sensor and would it work for the Japanese model? Cheers.
Sorry for the delay. Yes it should work on Japanese models. The Honda Part Number (P/N): 37760-P00-003
***** Thanks. got the part on order.
.
FUCK HONDA!!
I have a quick question if only one of my fan works and the other one doesn't kick on does that mean one blow and the one that's working is not blowing the air towards the radiator it's blowing towards the motor does that mean there's a short circuit somewhere