A little help please IAC

NicksMoneyMonster · Jun 15, 2021

Good morning. I recently bought a mustang I know it had a tune on it but the previous owner said the tuner was stolen. I took the IAC valve off to clean it bc I had a rough idle (high then low then high) when I put it back on the car starts gets down to about 800 then just dies. Any advice or help would be greatly appreciated

Michael sommers · Jun 15, 2021

NicksMoneyMonster said:
Good morning. I recently bought a mustang I know it had a tune on it but the previous owner said the tuner was stolen. I took the IAC valve off to clean it bc I had a rough idle (high then low then high) when I put it back on the car starts gets down to about 800 then just dies. Any advice or help would be greatly appreciated

A lot of the times it’s best to just buy a new motor craft one (don’t get any other brand) sometimes cleaning an old used is not effective.

Mustang5L5 · Jun 15, 2021

Perform the idle reset procedure first. If you search you’ll find dozens of posts on how to do it

Edit: dammit. Thought this was the fox board. Nevermind disregard

NicksMoneyMonster · Jun 18, 2021

Mustang5L5 said:
Perform the idle reset procedure first. If you search you’ll find dozens of posts on how to do it

Ok thank you very much

TIGGER · Jun 18, 2021

I assume you have a GT? I found out the hard way you are not supposed to clean the 4.6 IAC. I did that to my 96 earlier this year and it ran just like yours does. Wont idle and dies. I wanted to clean it because it had a hanging idle. I read after I cleaned it that you are not supposed to do it. I ended up buying a new motorcraft one and it runs good again.

NicksMoneyMonster · Jun 19, 2021

TIGGER said:
I assume you have a GT? I found out the hard way you are not supposed to clean the 4.6 IAC. I did that to my 96 earlier this year and it ran just like yours does. Wont idle and dies. I wanted to clean it because it had a hanging idle. I read after I cleaned it that you are not supposed to do it. I ended up buying a new motorcraft one and it runs good again.

Yes it’s a GT. Well It looks as tho I’m finding out the hard way as well. Thank you for the input, very much appreciated. I’ll go ahead and order a new one and I’ll post when it’s fixed.

NicksMoneyMonster · Jun 20, 2021

I put the new valve on and it’s fixed running and idling perfect thanks again.

A little help please IAC

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