Quick steps of cleaning the IAC.

wolfmania · May 11th, 2010, 01:06 PM

1st of all, I would like thank ANYONE in this forum who helped and supported me in finding the solution for the problem i had in my car.

basically, the engine was not starting properly when the car was parked for more than 4 hours approximately, i had to accelerate it a little manually until the engine gets warm, then then the rpm gets to the normal value.

Luckily, I found the solution for that and did everything at home, special thanks to all of the members who provided me the answer when i posted about this problem.

Problem description:

-The engine will not start when the vehicle is parked for more than 3-4 hours. (the RPM raises for 1 second and then the engine shuts off)

-The engine could be started by accelerating it manually.

-When the engine is already warm, there was no problem in the start up at all.

Solution:

Simply, the Idle Air Controller (IAC) needed to be cleaned from inside. And here are the steps you should follow:

*Tools you need:
-8mm spanner+ socket wrench w/8mm socket
-Curb cleaner/WD40
-New IAC gasket (recommended)
-Fender covers (if you really want to avoid scratching your car)

1. the first step is to disconnect (X) wire and then loosen the two 8mm bolts which are located on upper and lower of the IAC.

2. You may need to disconnect other wires or remove some hoses that bothers you during the operation.

3. Remove the IAC from the Throttle Body, you will notice that the gasket needs to be replaced sometimes, here is how it looks:

BTW, it wasn't spoiled this much, I shredded it a little by mistake because I didn't know that its so soft.

4. Clean the holes in the IAC, also try cleaning the which is directly on the Throttle Body using the curb cleaner/WD40.

5. Now after cleaning the part properly, it is time to replace it again. Use the new gasket if the old one is ruined.

6. Make sure all the plugs, wires, and hoses are completely back to normal and on their original places before you end up your work.

7. Start it up, and keep it running for couple of minutes and you are done.

Notice: make sure all the work will be done when the engine is not warm.

Well, I made this at home and it worked 100%, thanks again for anyone who supported me to solve this problem, I hope you like this topic guys

.

ZenMGT · May 11th, 2010, 02:24 PM

Cool - I'll be doing this soon

tfofkyle · May 11th, 2010, 02:26 PM

excellent writeup.

wolfmania · May 11th, 2010, 02:34 PM

Thanks guys!

M.P. Cobra Fan · May 11th, 2010, 02:36 PM

Thanks for the write up. I think this will be helpful to a few members here.

M.P. Cobra Fan · May 11th, 2010, 02:38 PM

BTW, I am adding it to the HOW TO thread at the top of the forum for future members.

wolfmania · May 11th, 2010, 02:39 PM

no problem, oh that would be great, thanks man!

M.P. Cobra Fan · May 11th, 2010, 02:40 PM

No problem. Reps on the write up as well.

tfofkyle · May 11th, 2010, 02:54 PM

+ reps as well, thank you.

on a side note - gotta love when its an easy fix on our cars

Shaun03GT · May 11th, 2010, 03:08 PM

Great write up man. Reps to you. Good pictures too, obviously took your time writing that.

dcook_14 · May 11th, 2010, 03:24 PM

Nice writeup for sure! Can you do a rundown of the benefits of cleaning it? Like what issues you were having with your car? Don't need a novel, just cliffnotes.

wolfmania · May 11th, 2010, 03:44 PM

Thank you all!

@dcook_14, thanks man, talking about the benefits, as I mentioned in the beginning of the topic, I can now easily start up the engine without having any (RPM falling down) issues, it starts immediately without the need of accelerating it manually. Also the car is breathing better than before, especially when shifting from P to drive, the rpm doesn't jump.

dcook_14 · May 11th, 2010, 04:44 PM

Noice!

wolfmania · May 12th, 2010, 01:30 AM

....it worked 100%!

wolfmania · May 12th, 2010, 10:58 AM

I checked it again today, no start-up issues at all! ..

Getsome122 · March 27th, 2011, 11:15 PM

Was hoping this would fix my issue. Got the same thing happening. But no joy....

newsatng · March 28th, 2011, 06:53 AM

If the IAC cleanse does not fix your idling problems it's time to check and clean the MAF. Even easier to to do than the IAC.

I thought it was my IAC being dirty, but turns out of MAF was dirty which fucked up my gas ratio thus causing RPMs to sway and my car to vibrate.

Good luck.

JK7208 · March 28th, 2011, 09:18 AM

+1 reps i will be doing mine this week along with all the fluids and alum d/s install.

ran260gt · March 28th, 2011, 09:51 AM

Nice wright up, but your dirty ass engine makes me sad

!

bigchapp · March 29th, 2011, 09:53 AM

this was the exact thing happening to my 02 mustang gt...im happy i read this before i spent alot of cash having stuff replaced

May 11th, 2010, 01:06 PM	#1
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	Quick steps of cleaning the IAC. 1st of all, I would like thank ANYONE in this forum who helped and supported me in finding the solution for the problem i had in my car. basically, the engine was not starting properly when the car was parked for more than 4 hours approximately, i had to accelerate it a little manually until the engine gets warm, then then the rpm gets to the normal value. Luckily, I found the solution for that and did everything at home, special thanks to all of the members who provided me the answer when i posted about this problem. Problem description: -The engine will not start when the vehicle is parked for more than 3-4 hours. (the RPM raises for 1 second and then the engine shuts off) -The engine could be started by accelerating it manually. -When the engine is already warm, there was no problem in the start up at all. Solution: Simply, the Idle Air Controller (IAC) needed to be cleaned from inside. And here are the steps you should follow: Tools you need: -8mm spanner+ socket wrench w/8mm socket -Curb cleaner/WD40 -New IAC gasket (recommended) -Fender covers (if you really want to avoid scratching your car) 1. the first step is to disconnect (X) wire and then loosen the two 8mm bolts which are located on upper and lower of the IAC. 2. You may need to disconnect other wires or remove some hoses that bothers you during the operation. 3. Remove the IAC from the Throttle Body, you will notice that the gasket needs to be replaced sometimes, here is how it looks: BTW, it wasn't spoiled this much, I shredded it a little by mistake because I didn't know that its so soft. 4. Clean the holes in the IAC, also try cleaning the which is directly on the Throttle Body using the curb cleaner/WD40. 5. Now after cleaning the part properly, it is time to replace it again. Use the new gasket if the old one is ruined. 6. Make sure all the plugs, wires, and hoses are completely back to normal and on their original places before you end up your work. 7. Start it up, and keep it running for couple of minutes and you are done. Notice: make sure all the work will be done when the engine is not warm. Well, I made this at home and it worked 100%, thanks again for anyone who supported me to solve this problem, I hope you like this topic guys . __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook:* http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 11th, 2010, 02:24 PM	#2
ZenMGT Hardcore Enthusiast '02 GT 5spd Join Date: Oct 2009 Location: Boca Posts: 1,133 iTrader: 1 reviews	Cool - I'll be doing this soon __________________ boringly stock........but running well

May 11th, 2010, 02:26 PM	#3
tfofkyle Hardcore Enthusiast 02 Mustang GT Join Date: Dec 2009 Location: SE Michigan Posts: 1,682 iTrader: 0 reviews	excellent writeup. __________________

May 11th, 2010, 02:34 PM	#4
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	Thanks guys! __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 11th, 2010, 02:36 PM	#5
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	Thanks for the write up. I think this will be helpful to a few members here. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

May 11th, 2010, 02:38 PM	#6
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	BTW, I am adding it to the HOW TO thread at the top of the forum for future members. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

May 11th, 2010, 02:39 PM	#7
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	no problem, oh that would be great, thanks man! __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 11th, 2010, 02:40 PM	#8
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	No problem. Reps on the write up as well. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

May 11th, 2010, 02:54 PM	#9
tfofkyle Hardcore Enthusiast 02 Mustang GT Join Date: Dec 2009 Location: SE Michigan Posts: 1,682 iTrader: 0 reviews	+ reps as well, thank you. on a side note - gotta love when its an easy fix on our cars __________________

May 11th, 2010, 03:08 PM	#10
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	Great write up man. Reps to you. Good pictures too, obviously took your time writing that. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

May 11th, 2010, 03:24 PM	#11
dcook_14 Banned 2004 Mustang GT 12.35@114.08 w/ 1.88 60' Join Date: Feb 2009 Location: Waterloo, IA Posts: 7,015 Blog Entries: 2 iTrader: 7 reviews	Nice writeup for sure! Can you do a rundown of the benefits of cleaning it? Like what issues you were having with your car? Don't need a novel, just cliffnotes. __________________ Do the Right Thing, Cook. ~Zip.

May 11th, 2010, 03:44 PM	#12
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	Thank you all! @dcook_14, thanks man, talking about the benefits, as I mentioned in the beginning of the topic, I can now easily start up the engine without having any (RPM falling down) issues, it starts immediately without the need of accelerating it manually. Also the car is breathing better than before, especially when shifting from P to drive, the rpm doesn't jump. __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 11th, 2010, 04:44 PM	#13
dcook_14 Banned 2004 Mustang GT 12.35@114.08 w/ 1.88 60' Join Date: Feb 2009 Location: Waterloo, IA Posts: 7,015 Blog Entries: 2 iTrader: 7 reviews	Noice! __________________ Do the Right Thing, Cook. ~Zip.

May 12th, 2010, 01:30 AM	#14
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	....it worked 100%! __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

May 12th, 2010, 10:58 AM	#15
wolfmania Regular 2000 Mustang GT Join Date: Apr 2010 Location: Kingdom of Bahrain Posts: 140 iTrader: 0 reviews	I checked it again today, no start-up issues at all! .. __________________ 2000 Mustang GT Auto -Custom o/r X-pipe -Flowmaster super 44 mufflers Facebook: http://www.facebook.com/Abdulla.Rawanbakhsh Email: wolfmania90@hotmail.com

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March 27th, 2011, 11:15 PM	#16
Getsome122 Newbie 2004 Mustang GT Conv. Join Date: Mar 2011 Location: Bristol, TN Posts: 11 iTrader: 0 reviews	Was hoping this would fix my issue. Got the same thing happening. But no joy....

March 28th, 2011, 06:53 AM	#17
newsatng Regular 2003 Mustang GT Join Date: Nov 2010 Posts: 194 iTrader: 0 reviews	If the IAC cleanse does not fix your idling problems it's time to check and clean the MAF. Even easier to to do than the IAC. I thought it was my IAC being dirty, but turns out of MAF was dirty which fucked up my gas ratio thus causing RPMs to sway and my car to vibrate. Good luck.

March 28th, 2011, 09:18 AM	#18
JK7208 Regular 1996 mustang gt 13.07@104.66 Join Date: Oct 2009 Location: frackville, pa Posts: 126 iTrader: 0 reviews	+1 reps i will be doing mine this week along with all the fluids and alum d/s install.

March 28th, 2011, 09:51 AM	#19
ran260gt Regular 2004 4R75W Mustang GT 13.179 @ 104.30 Join Date: Jul 2010 Location: Philly Posts: 305 iTrader: 0 reviews	Nice wright up, but your dirty ass engine makes me sad ! __________________ ...Mods in garage

March 29th, 2011, 09:53 AM	#20
bigchapp Newbie 2002 mustang gt Join Date: Mar 2011 Location: los angeles Posts: 5 iTrader: 0 reviews	this was the exact thing happening to my 02 mustang gt...im happy i read this before i spent alot of cash having stuff replaced

LinkBacks (?) LinkBack to this Thread: http://www.moddedmustangs.com/forums/99-04/165357-quick-steps-cleaning-iac.html
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