This helped me so much with my G35 intermittent overheating when AC turned on in 95-100 degree heat. Just ordered replacement dual fan assembly for $90. WOW solid advice. Thanks bro!
if it werent for this video my car would of been still sitting on the drive way, my fans were kicking on but they were very slow and it was causing the car to overheat slightly after watching this video i knew what the problem was. thank you, thumps up!
I have the exact same issue with my nissan maxima. Im going to get mines replaced as soon as the new fan motors arrives. Thank you very much for the information you provided in this video.
Thanks for the video. It would have been really a great video if some of the missing information was added like say..... 1. Video of the Motor Replacement 2. Scan tool model that was used. 3. Part number for the motors and where you bought them from. Small but important details. I spent some time on google, but still hasn't come across where to get these motors from. Never-the-less, great video on troubleshooting this common issue.
The same thing is happening to my car right now! 😭😭😭 this video helped me solve my problem now I gotta see where to take it. But I have a question what if your ac is blowing hot air to?
Has it blowing hot air for while or recently ? Most of the time, when you blow hot air, is due to low freon/no freon (leak) or blend doors stuck in the hot position or compressor not working. Not quite sure if faulty motors can cause that kind of symptom. I would recommend checking your low and high side pressures to verify if your low on freon.
Good job! I am having similar problem with the temperature rising then returning back to "normal" temperature. Fans are working fine so I was hoping you had other videos or suggestions on what to look at next?
Miguel Gutierrez Perhaps a faulty thermostat that is not operating normally at moments. Radiator that can be partially clogged and not allowing normal flow. A faulty radiator cap.
I have too say you did an good video on you tube . Its was easy too under stand you did an great job . The question are you an mechanic or some thing ?
My friend , my left fan (ac ) turns on by hand only , like the video , the right one never turns on .Switched connectors same thing happens . Faulty fan motors right ?
Most likely faulty motors. U can use two jumper wires and directly apply 12 volts to the motor and see if it spins, if no spin, confirms 100% faulty motor.
I changed water pump , thermostats and can’t find any leaks but my car is heating up at stop lights and going back down as I drive again , fans sound like they are on .. any idea ??
Hey buddy, I have a 01 and I noticed the fans aren’t working right (I removed a fuse of the fan number 1 and the main fan works fine but when I put the fuse back on, it starts rattling like crazy. From what I’m seeing here, those fans that aren’t working properly and are causing that car to overheat sporadically. Could also the fans be a factor of why the car suddenly shut off by itself mostly when it idling? It starts to rev up by itself till it gets to a point where it just dies. Sometimes happens while I’m on the highway (the majority of the light tries to turn on and sometimes blink). I thought it was the throttle sensor cause of the abrupt rev up but I replaced it last December 2018. Any suggestion? Thanks in advance for the help and God bless.
But that’s the thing, my car isn’t overheating at all. So that’s why I’m assuming since the fans aren’t working properly, those are the cause of this car shutting off when idling
@@ragh91 I'm pretty sure that the fans are not the cause for your car shutting off. Check your throttle body to see if it's dirty. Since your idle is behaving abnormal, you might need an idle relearn.
Hey there, I'm not 100% quite sure, but I do believe that both fans should kick in at the same time without a/c on. I will look into it and I will update you.
@@EliTheOBDTech thank you. When a/c is off 1 fan is running. When a/c is on 2 fans is running. I used to remember that 2 would run even if a/c is off. But maybe the colder weather has some to do with it, Been looking in the FSM and it doesn't specify.
@@dominicene3647 Hey there, after looking at the description and operation in ALLDATA, both fans should operate together with or without A/C switch on/off.
@@EliTheOBDTech thank you for the response you are awesome. Can you do me a big favor? Is it possible you can email me that page from all data if not too much trouble.
Hi i have a 03 nissan 2.5 and it only overheats at highway speeds and spills coolant thru the overflow tank, i cant find any leaks and it doesnt overheat in traffic or driving in the city, i hope you can help me out thanks
You may have a partial clogged radiator that can't keep up with the water flow under higher pressure. Other items can be a radiator cap or a thermostat that's acting up at moments, not opening all the way when it needs to.
I have a 2004 Nissan Maxima , my car doesn’t overheat but ion think my fans turn on at all car temp stays right in the middle and I never hear the fans or ion think I do . What could be the problem , I read you comment to unplug the temp sensor and it will kick fans on . & my ac doesn’t work atm cuz no Freon in it so idk if there is a problem with my fans .
If you believe that they don't turn on. Try disconnecting the Engine Coolant Temp sensor to see if they come on. If they don't, you may have faulty fan motors, faulty ECT sensor, maybe faulty fan relay, blown fan fuse or some type of electrical problem.
@@EliTheOBDTech I swapped out the relays but I’ll try to disconnect the sensor and see if they turn on . I just never hear them I was told that they turn on when they are needed and I haven’t had ac so I never turn the ac on what
@@jonnnn4895 Best thing at this point, is to unplug the ect sensor and see if they kick on. Another way, is to use two jumper wires connected to battery + and -, and manually check each motor fan with the harness connector disconnected.
@@EliTheOBDTech I’ve unplugged the sensor and they do turn on . And i got a code for the sensor after unplugged it but how will I know if the sensor is no good ? If it didn’t give code at first. And soon I will be getting the hard ac line and getting it filled so it should turn on high to help the ac Correct ?
@@jonnnn4895 Yeah, by unplugging any sensor, you will always get a code, that is normal. I believe that your sensor is good. You will have to do a test drive of 8-10 mins and then come back and idle the vehicle with the hood open and see if your fans turn on. Yes, fans should turn on high with the AC ON.
I'm not familiar with the g35 radiator fan housing design, but if you're lucky you only need to disconnect the upper radiator hose in order to remove the fan housing. Will only lose small amount of coolant when disconnecting the upper hose.
Salvador Villanueva I would try to test it first by putting direct battery voltage into the fan connector. get two wires and put one on the positive battery post and the second wire on the negative battery post and connect each wire to the fan connector and see if the fan spins. if it doesn't, then you will need to buy a new fan motor.
something weird happened to me, theree was traffic and my temperature went at around 3.5/4 almost.to the top, i pulled over and poped the hood up, and only one fan was turning, i pushed the fan that it was not turning and it started to spin, relays were very hot, but i live in texas and the day was very hot, should i change that fan?
This helped me so much with my G35 intermittent overheating when AC turned on in 95-100 degree heat. Just ordered replacement dual fan assembly for $90. WOW solid advice. Thanks bro!
Did that fix you overheating problem? .mine only wants to overheat only with a/c on in hot weather.
Absolutely, no problems since
My Nissan max is doing the same thing I was gonna change the thermostat but after watching this vid I'm changing the fan motors. Thx for the video
if it werent for this video my car would of been still sitting on the drive way, my fans were kicking on but they were very slow and it was causing the car to overheat slightly after watching this video i knew what the problem was. thank you, thumps up!
I have the exact same issue with my nissan maxima. Im going to get mines replaced as soon as the new fan motors arrives. Thank you very much for the information you provided in this video.
Thanks for the video. It would have been really a great video if some of the missing information was added like say.....
1. Video of the Motor Replacement
2. Scan tool model that was used.
3. Part number for the motors and where you bought them from.
Small but important details. I spent some time on google, but still hasn't come across where to get these motors from. Never-the-less, great video on troubleshooting this common issue.
You're right.
Thanks for the feedback.
Thanks for your help bro I was trying to figure it out I even changed my radiator no I know it's my fans👍
Hey man, thanks for the useful information. With this video, I got it done.
Great information,thanks for your work in posting this!
Helped me narrow my issue down. Thanks bro!
Outstanding very helpful 👍
Great video,,,, same problem with my maxima......gracias
Great vid bro !! Thank you, Hey when does the ecm select high speed mode for the fans? Under what conditions does it happen !
Hight speed kicks either above 204 degrees or 212 degrees. A/C ON.
@@EliTheOBDTech Oh OK! Thank you again Your a great mechanic!!
had similar problem on 2001 maxima, , replaced duel fan assembly also check fuses, relays. I had 1 fan spinning and the other wouldn't
The same thing is happening to my car right now! 😭😭😭 this video helped me solve my problem now I gotta see where to take it. But I have a question what if your ac is blowing hot air to?
Has it blowing hot air for while or recently ? Most of the time, when you blow hot air, is due to low freon/no freon (leak) or blend doors stuck in the hot position or compressor not working. Not quite sure if faulty motors can cause that kind of symptom. I would recommend checking your low and high side pressures to verify if your low on freon.
@@EliTheOBDTech thank you for replying its been for a while now.
Thank you for this video.
thanks man very clear explaination
salah suanidi 7
Well done - at any point did you also suspect a wiring problem with high corrosion that would cause low amperage at the fans.
Thanks Steve. Yes, that also came to mind, especially when i did bi-directional control with my scan tool during the hi and low speed commands.
+Eli TheOBDTech are both fan motors supposed to come on at the same time on a 350Z 2006?
As far as I know, Nissan vehicles do turn on both fans.
Good job! I am having similar problem with the temperature rising then returning back to "normal" temperature. Fans are working fine so I was hoping you had other videos or suggestions on what to look at next?
Miguel Gutierrez Perhaps a faulty thermostat that is not operating normally at moments. Radiator that can be partially clogged and not allowing normal flow. A faulty radiator cap.
cool, I am going to do a flush(car is at 140,000 miles) If it continues I will change out the thermostat. thanks again.
Are they the same fan motor for both sides? I'm having trouble finding this information online.
If not mistaken, they were the same part number.
I have too say you did an good video on you tube . Its was easy too under stand you did an great job . The question are you an mechanic or some thing ?
I'm am weekend side job mechanic/tech.
@@EliTheOBDTech Nice video Eli. I do have one question. I have a 1997 Nissan Maxima. If you don't have a/c on, does 1 or 2 fans come on?
Very good video
My friend , my left fan (ac ) turns on by hand only , like the video , the right one never turns on .Switched connectors same thing happens . Faulty fan motors right ?
Most likely faulty motors. U can use two jumper wires and directly apply 12 volts to the motor and see if it spins, if no spin, confirms 100% faulty motor.
@@EliTheOBDTech Thank you for replying so quickly.God bless you for helping me .Have a great weekend.
@@thedeltoros5381 Thanks, same for you.
👍
I changed water pump , thermostats and can’t find any leaks but my car is heating up at stop lights and going back down as I drive again , fans sound like they are on .. any idea ??
It seems that your problem might be a partial restricted radiator.
Perhaps the fans are not kicking in at the high speed when commanded, Only low speed.
Hey buddy, I have a 01 and I noticed the fans aren’t working right (I removed a fuse of the fan number 1 and the main fan works fine but when I put the fuse back on, it starts rattling like crazy.
From what I’m seeing here, those fans that aren’t working properly and are causing that car to overheat sporadically. Could also the fans be a factor of why the car suddenly shut off by itself mostly when it idling? It starts to rev up by itself till it gets to a point where it just dies. Sometimes happens while I’m on the highway (the majority of the light tries to turn on and sometimes blink). I thought it was the throttle sensor cause of the abrupt rev up but I replaced it last December 2018.
Any suggestion? Thanks in advance for the help and God bless.
You might need a throttle relearn for idle issue. The overheating problem most likely is your fans not operating efficiently.
But that’s the thing, my car isn’t overheating at all. So that’s why I’m assuming since the fans aren’t working properly, those are the cause of this car shutting off when idling
@@ragh91 I'm pretty sure that the fans are not the cause for your car shutting off. Check your throttle body to see if it's dirty. Since your idle is behaving abnormal, you might need an idle relearn.
Both fans spin. But one of them is wobbly and making a lot of noise. Can I try to re attach the wobbly fan
It looks like the motor bearing may have gone bad.
Nice video Eli. I do have one question. I have a 1997 Nissan Maxima. If you don't have a/c on, does 1 or 2 fans come on?
Hey there, I'm not 100% quite sure, but I do believe that both fans should kick in at the same time without a/c on. I will look into it and I will update you.
@@EliTheOBDTech thank you. When a/c is off 1 fan is running. When a/c is on 2 fans is running. I used to remember that 2 would run even if a/c is off. But maybe the colder weather has some to do with it, Been looking in the FSM and it doesn't specify.
@@dominicene3647 Hey there, after looking at the description and operation in ALLDATA, both fans should operate together with or without A/C switch on/off.
@@EliTheOBDTech thank you for the response you are awesome. Can you do me a big favor? Is it possible you can email me that page from all data if not too much trouble.
@@dominicene3647 sure, what's your email?
Hi i have a 03 nissan 2.5 and it only overheats at highway speeds and spills coolant thru the overflow tank, i cant find any leaks and it doesnt overheat in traffic or driving in the city, i hope you can help me out thanks
You may have a partial clogged radiator that can't keep up with the water flow under higher pressure. Other items can be a radiator cap or a thermostat that's acting up at moments, not opening all the way when it needs to.
I have a 2004 Nissan Maxima , my car doesn’t overheat but ion think my fans turn on at all car temp stays right in the middle and I never hear the fans or ion think I do . What could be the problem , I read you comment to unplug the temp sensor and it will kick fans on . & my ac doesn’t work atm cuz no Freon in it so idk if there is a problem with my fans .
If you believe that they don't turn on. Try disconnecting the Engine Coolant Temp sensor to see if they come on. If they don't, you may have faulty fan motors, faulty ECT sensor, maybe faulty fan relay, blown fan fuse or some type of electrical problem.
@@EliTheOBDTech I swapped out the relays but I’ll try to disconnect the sensor and see if they turn on . I just never hear them I was told that they turn on when they are needed and I haven’t had ac so I never turn the ac on what
@@jonnnn4895 Best thing at this point, is to unplug the ect sensor and see if they kick on. Another way, is to use two jumper wires connected to battery + and -, and manually check each motor fan with the harness connector disconnected.
@@EliTheOBDTech I’ve unplugged the sensor and they do turn on . And i got a code for the sensor after unplugged it but how will I know if the sensor is no good ? If it didn’t give code at first. And soon I will be getting the hard ac line and getting it filled so it should turn on high to help the ac Correct ?
@@jonnnn4895 Yeah, by unplugging any sensor, you will always get a code, that is normal. I believe that your sensor is good. You will have to do a test drive of 8-10 mins and then come back and idle the vehicle with the hood open and see if your fans turn on. Yes, fans should turn on high with the AC ON.
good job...
I have a Nissan xtrail and same thing. My a/c isnt working but I see the compressor spinning.
I'm not quite understanding....
on My g35 its the opposite side that dont work.to change the fans do ihave to drain my coolent
I'm not familiar with the g35 radiator fan housing design, but if you're lucky you only need to disconnect the upper radiator hose in order to remove the fan housing. Will only lose small amount of coolant when disconnecting the upper hose.
I have a 2005 Nissan Altima and only one fan runs the one on the left the right one doesn't work. What can i do?
Salvador Villanueva I would try to test it first by putting direct battery voltage into the fan connector. get two wires and put one on the positive battery post and the second wire on the negative battery post and connect each wire to the fan connector and see if the fan spins. if it doesn't, then you will need to buy a new fan motor.
Alright ill give it a try ill let you know what happens
Good luck
something weird happened to me, theree was traffic and my temperature went at around 3.5/4 almost.to the top, i pulled over and poped the hood up, and only one fan was turning, i pushed the fan that it was not turning and it started to spin, relays were very hot, but i live in texas and the day was very hot, should i change that fan?
Sorry for the delay. In your case, I would replace just the motor on the fan, no need to buy the whole fan assembly.
My ac fans don't turn on properly,I did the switch trick and the turned on really slow
frank saenz most likely your fans motors are going out. You will need to replace only the fan motors, not the whole assembly.
this happens to a lot of maximas
GUYS x 23😂😂😂
dude i have same problem i change new fan but now the one so work not work an abother so work before not work what wrong XD
Kenny Uchiha try applying 12v to the other one that doesn't work and see if it works.
well i didnt have that tool XD or cabel to test it .. still woner i get ceap copy cant find AVA mark only its from crap taiwan.. sure over pay rofl.
Great job , you're awesome . Thanks!
Herman Lampkin