And....forgot to say, the pdf manual for the 4runner/tacoma says to test the volts being sent to it and to bring a wire from the positive terminal of the vehicles battery to one of the two positive terminal posts on the IAC solenoid to ensure it actually opens and closes. Don't forget, you need to hook up a wire from the negative post of the battery to the negative post on the IAC also. Doing this opens and closes the valve.
Thanks for the great info! I dumped over $3000 in my truck because of this issue. I have the same issue. I got pissed off about it one day and punched the gas and it blew both my cats and whole exhaust system right off the truck. Glad I found your video. Wish I found it earlier. On my 4th year with the problem. Hoping O2 sensor and IAC clean helps. I have a brand new MAF on it.
I have the same problem with my IAC. The check engine light (CEL) is on and it gives a fault code of 'P0505'. I know it is the IAC. I tried to remove my IAC from the throttle body (TB), but did not have the impact wrench. I had to put it all back together. I did run carb cleaner through it to no avail. I do have the gasket for the IAC and I had to replace the gasket on the TB. I planned it it getting torn and, as Murphy would have it, it did tear.
I had the same issue change mine twice the first one went bad cleaned it and didn't work had to buy a new one then 2 years later I had a small leak from one of the little hoses which leaked right on top of the IAC valve and it got bad so this part is very delicate it got bad just with a bit of over heating and the antifreeze got in to the mechanism.
Great video . I very thankful To you for taking the time to post this video.I just did my and pass my smog check . I was getting the check engine light cleaned and no more problem thanks again.
Thanks for the video. Had a squirrel decide to make a nest in my airbox and I got junk sucked into the TB... cleaned that and it ran good, but no cold idle (higher idle). After some searching and reading I decided it was the IAC. Thanks to your video it made me aware of what to look out for. Was in an out in 30 minutes with a perfect idle again. 95.5 Taco 3.4 with 280k miles. :)
I did get it from AutoZone, it was a special order item that took a couple days. I don't have the part number anymore but they should be able to get it for you.
Well like I mentioned in the video description, I DID get a new IAC and it did not fix the problem. In my case it was an upstream O2 sensor and the MAF (which I replaced once before)
I have the same engine in my 3rd gen '02 T4R. I'm having stalls with no CE light. My mechanic thinks I need to replace the IAC valve. My thought was that if the sensor went bad I should get a code. Thoughts?
I work there a lot of times I have just sprayed throttlebody cleaner really good open up the throttle plate and spray everything out really good and it seems to clean everything up and restore it pretty well I’ve done this on many cars but taking it off completely and cleaning it like you is a good a good fix instead of buying a new one
I have 1996 Toyota T100 has the same problem. I brought to the shop for diagnostics, they told me I have to change the IAC sensor and the Distributor. I just change the branch new IAC Sensor and the brand new Distributor but it not fix.??? According to your information, I am going to change the branch new MAF sensor, and the the ECT sensor if it not work. THANKS YOU FOR YOUR VERY VALUABLE INFORMATION.
When you take the censor off and youre spinning the valve to clean inside. It is keyed or do you have to remember what position it was in when you removed it?
This has been TH-cam's most suggested video for me for 4 years now. I have seen it now. LOL It is so old that Duf is still sporting a north of the Mason accent.
I got both gaskets from Walmart. I picked them up at the local Walmart for $5.10. Fel-Pro Oe 61038 THROTTLE BODY $2.77 Fel-Pro Oe 61087 THROTTLE BODY $2.00
On the side of the tb there's a small plate covering a hole secured by 2 brass screws.i noticed when u cleaned the iac u never removed it or cleaned it
Thanks for posting! Good video. BTW did you say you got the gasket from auto zone? If so, do you happen to have a part number? I plan on doing this soon. Thanks Duf.
Hello Duf. Got a question for you. When I turn on the A/C switch the compressor it doesn't engage until I press the gas then when I let go the compressor disengage. Replaced clutch and a/c compressor already and the a/c amplifier. I'm thinking maybe I should clean the idle air control valve, the toyota dealer calls it idle speed control valve. Any thoughts? Any help would be appreciated. Thanks
@@Duf That's kind of my thinking as well based on talking with 2 toyota dealers. The part number they gave me is 22270-62050 which is called the idle air control valve online but toyota calls it the idle speed control valve. Weird thing is I found an FSM that pointed to maybe it being something else called the "A/C idle up valve". The consensus was that the A/C idle up valve came in the 3VZ engines not 5VZ but i pulled up an FSM which had it on an 5VZ engine which you and I have. To conclude me and my mechanic didn't find this A/C idle up valve and he will clean the idle air control valve we did locate and see what happens
Thanks for the video. I looked up the gasket from AutoZone. "Felpro/TBI Base Gasket" - Part Number: 61087 (Alternate Part Number: B61087). My store had it in stock for $1.49.
The IAC Seal of my 2001 Celica GT was broken, coolant leaked into the Intake manifold, does that means the coolant enter the combustion chamber? Inside the intake manifold and on the throttle body blade there is a red-colored layer of coolant, what should I do in this situation beside of cleaning the throttle body blade? The new seal is already in place, which means there shouldn't be anymore leak.
I'm not a professional mechanic and a Celica motor is a different design from the Tacoma so I don't have any experience with it. However from what you describe it sounds like some coolant could have gotten into the cylinders. If it was only a small amount it may be ok but I would have a mechanic verify it.
My 2004 Tacoma 2.4L was having Idle problems. It would idle at around 2k and at each stop it would fluctuate between 1k and 2k. I took the throttle body off and removed the IAC. I hadn't touched any of this in 13 years and 230k miles. I cleaned the IAC as best I could but it looked like it wouldn't function as it was fairly dirty. I closed the valve and cleaned the door(?). I decided to leave this closed. I got it all back together and the truck had a difficult time starting and I had to keep my foot on the accelerator to keep th motor running. A drove the truck around and the idle finally settled down and it idles near what it should. I think I need a new IAC though. Thanks for the video. It was a big help.
hi there, need some help pls, i had aceleration problem, when iam in 4 o 3 speed sudenly the engine sufer top aceleration, i have turn off and start the engine again. I clean up the trotlle body and 1 month work fine. anybody had the same problem?? thanxs
No it did not although for others it did. I wound up even replacing the IAC valve and still had a problem. The problem was finally corrected by replacing the MAF sensor.
And....forgot to say, the pdf manual for the 4runner/tacoma says to test the volts being sent to it and to bring a wire from the positive terminal of the vehicles battery to one of the two positive terminal posts on the IAC solenoid to ensure it actually opens and closes. Don't forget, you need to hook up a wire from the negative post of the battery to the negative post on the IAC also. Doing this opens and closes the valve.
I'm about to try this. Got the gasket from o'reillys. Part number 61087. Thanks
Thanks for the great info! I dumped over $3000 in my truck because of this issue. I have the same issue. I got pissed off about it one day and punched the gas and it blew both my cats and whole exhaust system right off the truck. Glad I found your video. Wish I found it earlier. On my 4th year with the problem. Hoping O2 sensor and IAC clean helps. I have a brand new MAF on it.
+Superhunter12 Oh wow dude, I hope it helps too, yea it was a huge pain the ass and dangerous.
I have the same problem with my IAC. The check engine light (CEL) is on and it gives a fault code of 'P0505'. I know it is the IAC. I tried to remove my IAC from the throttle body (TB), but did not have the impact wrench. I had to put it all back together. I did run carb cleaner through it to no avail. I do have the gasket for the IAC and I had to replace the gasket on the TB. I planned it it getting torn and, as Murphy would have it, it did tear.
I had the same issue change mine twice the first one went bad cleaned it and didn't work had to buy a new one then 2 years later I had a small leak from one of the little hoses which leaked right on top of the IAC valve and it got bad so this part is very delicate it got bad just with a bit of over heating and the antifreeze got in to the mechanism.
Great video . I very thankful
To you for taking the time to post this video.I just did my and pass my smog check .
I was getting the check engine light cleaned and no more problem thanks again.
Awesome! I'm always glad to hear when one of my videos helps someone out.
Gasket was cheap, less than 10 dollars. RPM at idle is somewhere around 750
Hope it helps, it appears to be a pretty common problem.
Ah that's awesome, great to hear the video helped. Cleaning it does work for a lot of people.
Your vid's a quintessential "how-to" in my mind!
Nicely put. Thanks
Thanks for the video. Had a squirrel decide to make a nest in my airbox and I got junk sucked into the TB... cleaned that and it ran good, but no cold idle (higher idle). After some searching and reading I decided it was the IAC. Thanks to your video it made me aware of what to look out for. Was in an out in 30 minutes with a perfect idle again. 95.5 Taco 3.4 with 280k miles. :)
HEY, at least it wasn't a rat getting chopped up in your blower motor that got in when you left the "ouside air" vent on overnight.
Thanks a lot worked like a charm. You were absolutely right about stripping those Phillips screws. My 1999 4Runner idles perfect. Thanks again.
Marshall & Brook Powell Glad it helped!
You can put 12 v to idle control valve and valves will open for better cleaning
Good tip!
I did get it from AutoZone, it was a special order item that took a couple days. I don't have the part number anymore but they should be able to get it for you.
Looking for info on replacing the front brakes, alternator or starter on a 99 Tacoma? I have videos covering when I tackled those jobs as well!
Well like I mentioned in the video description, I DID get a new IAC and it did not fix the problem. In my case it was an upstream O2 sensor and the MAF (which I replaced once before)
I have the same engine in my 3rd gen '02 T4R. I'm having stalls with no CE light. My mechanic thinks I need to replace the IAC valve. My thought was that if the sensor went bad I should get a code. Thoughts?
Thank you ..man
I work there a lot of times I have just sprayed throttlebody cleaner really good open up the throttle plate and spray everything out really good and it seems to clean everything up and restore it pretty well I’ve done this on many cars but taking it off completely and cleaning it like you is a good a good fix instead of buying a new one
Thanks for the feedback!
I have 1996 Toyota T100 has the same problem. I brought to the shop for diagnostics, they told me I have to change the IAC sensor and the Distributor. I just change the branch new IAC Sensor and the brand new Distributor but it not fix.???
According to your information, I am going to change the branch new MAF sensor, and the the ECT sensor if it not work.
THANKS YOU FOR YOUR VERY VALUABLE INFORMATION.
Ah ok glad to hear it. In my case the cleaning didn't fix it :(
IAC screws are steel. Yes they are brass colored because Toyota zinc plates them.
Well regardless they supposedly can strip out easily.
@@Duf They are very tight.
Well keep in mind, after doing this I REPLACED the IAC and still had the issue. Eventual fix was MAF sensor/O2 sensor replacement.
Which was it?
When you take the censor off and youre spinning the valve to clean inside. It is keyed or do you have to remember what position it was in when you removed it?
This has been TH-cam's most suggested video for me for 4 years now. I have seen it now. LOL It is so old that Duf is still sporting a north of the Mason accent.
It is my most viewed video!
I did it to my 98 T100 it's blowing white smoke like a son of a bitch
Well that sounds like you have coolant getting into the combustion chamber.
Dufisthenics thank you
Oh a totally different set up then.
I got both gaskets from Walmart. I picked them up at the local Walmart for $5.10.
Fel-Pro Oe 61038 THROTTLE BODY $2.77
Fel-Pro Oe 61087 THROTTLE BODY $2.00
No way? I never knew Walmart sold those type of automotive parts. I only ever used them for things like filters and oil.
Walmart.Com. Order online and pickup when delivered to the store with no shipping fees. Great deal!
On the side of the tb there's a small plate covering a hole secured by 2 brass screws.i noticed when u cleaned the iac u never removed it or cleaned it
95 tacoma 2.4 engine surges at idle when I'm running the Ac.come to a stop & engine surges.this has to be the problem, I cleaned the tb,maf,new plugs
Thanks for video and update. It is a great visual even if it failed to fix the problem.
Thanks for posting! Good video. BTW did you say you got the gasket from auto zone? If so, do you happen to have a part number? I plan on doing this soon. Thanks Duf.
having the same issue with my 02 tacoma now i feel like this 100% has to be the issue after doing the same things you did lol
Hello Duf. Got a question for you. When I turn on the A/C switch the compressor it doesn't engage until I press the gas then when I let go the compressor disengage. Replaced clutch and a/c compressor already and the a/c amplifier. I'm thinking maybe I should clean the idle air control valve, the toyota dealer calls it idle speed control valve. Any thoughts? Any help would be appreciated. Thanks
I have no idea why the two things would be connected? A dirty IAC causes rough idle. It looks to me like "idle speed control valve" is the IAC valve.
@@Duf That's kind of my thinking as well based on talking with 2 toyota dealers. The part number they gave me is 22270-62050 which is called the idle air control valve online but toyota calls it the idle speed control valve. Weird thing is I found an FSM that pointed to maybe it being something else called the "A/C idle up valve". The consensus was that the A/C idle up valve came in the 3VZ engines not 5VZ but i pulled up an FSM which had it on an 5VZ engine which you and I have. To conclude me and my mechanic didn't find this A/C idle up valve and he will clean the idle air control valve we did locate and see what happens
No it wasn't keyed.
Thanks for the video. I looked up the gasket from AutoZone. "Felpro/TBI Base Gasket" - Part Number: 61087 (Alternate Part Number: B61087). My store had it in stock for $1.49.
Cool, I got mine from Autozone too.
Thanks, hope it helped!
and a wind filter will prevent that noise as you film in a windy place...
Since this video I have upped my windscreen game
Could it have been your MAF sensor the whole time?
The IAC Seal of my 2001 Celica GT was broken, coolant leaked into the
Intake manifold, does that means the coolant enter the combustion
chamber? Inside the intake manifold and on the throttle body blade
there is a red-colored layer of coolant, what should I do in this
situation beside of cleaning the throttle body blade? The new seal is
already in place, which means there shouldn't be anymore leak.
I'm not a professional mechanic and a Celica motor is a different design from the Tacoma so I don't have any experience with it. However from what you describe it sounds like some coolant could have gotten into the cylinders. If it was only a small amount it may be ok but I would have a mechanic verify it.
any torque specs for the 2 nuts and bolts that hold the throttle body?
My 2004 Tacoma 2.4L was having Idle problems. It would idle at around 2k and at each stop it would fluctuate between 1k and 2k. I took the throttle body off and removed the IAC. I hadn't touched any of this in 13 years and 230k miles. I cleaned the IAC as best I could but it looked like it wouldn't function as it was fairly dirty. I closed the valve and cleaned the door(?). I decided to leave this closed. I got it all back together and the truck had a difficult time starting and I had to keep my foot on the accelerator to keep th motor running. A drove the truck around and the idle finally settled down and it idles near what it should. I think I need a new IAC though. Thanks for the video. It was a big help.
Sure thing. I wound up replacing my IAC.
Thanks for posting, I've got the same truck and had the same issue!
Good video. My comment is I did not see anything about replacing the gasket for the throttle body.
+Todd Dragert Yea I reused mine. Since it is a metal gasket I read that normally you can just reuse it.
How much was the gasket ? What is your rpm @ idle???
megusta lainformasion me ayuda
The one u got was for Toyota 1nz-fe
Thank you brother , I fixed my Toyota t 100 , it was iac valve ,it was dirty
Awesome bud!
Do they sell patience at Auto Zone or do I have to special order that from Toyota? ;)
If they did I would be buying all they had.
Great video, lots of details thanks!
hi there, need some help pls, i had aceleration problem, when iam in 4 o 3 speed sudenly the engine sufer top aceleration, i have turn off and start the engine again. I clean up the trotlle body and 1 month work fine. anybody had the same problem?? thanxs
Could be the IAC could be the MAF sensor.
Dufisthenics thanxs for answer, do you think clean up resolve the problem? Or change?
Can't say until you try cleaning it first. The MAF can be cleaned as well
And I have a '97 4runner 4x4, 2.7 liter 4 cyl 3RZ-FE engine.
Duf, I should say Did own a '97 4runner. I no longer have it. Sorry.
Thank you great video .
did this fix your hot start issue?
No it did not although for others it did. I wound up even replacing the IAC valve and still had a problem. The problem was finally corrected by replacing the MAF sensor.
Ah awesome, always love hearing that one of my videos helped someone out.