Idle Surge
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Junior User
Joined: May 2003
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Idle Surge
Boys:
My 99 V10 started to surge every 20 or 30 seconds as it warms up and when stopped in drive. Any thoughts. goes from 900 RPM to 1200+/- rpm. I pulled the codes and there were no to read. Thanks in advance for any reply.
PS - Never let a chebby pass you.... Never....
Vegas-V10
My 99 V10 started to surge every 20 or 30 seconds as it warms up and when stopped in drive. Any thoughts. goes from 900 RPM to 1200+/- rpm. I pulled the codes and there were no to read. Thanks in advance for any reply.
PS - Never let a chebby pass you.... Never....
Vegas-V10
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
It sounds like your IAC (Idle Air Control) valve is acting up.
Sometimes you can remove and clean them, sometimes they need replacing.
Have you got a maintenance manual of any kind? It's that domed part that sits just behind the throttle body.
Here's a real old thread - all I have handy at the moment:
https://www.ford-trucks.com/dcforum/...D117/3953.html
Sometimes you can remove and clean them, sometimes they need replacing.
Have you got a maintenance manual of any kind? It's that domed part that sits just behind the throttle body.
Here's a real old thread - all I have handy at the moment:
https://www.ford-trucks.com/dcforum/...D117/3953.html
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Big Orn:
Thanks for the advice and re-direct. I'll check it out tonight. How do you clean it or what do you clean it with. (Please don't say your hands...HAHA)
Thanks again in advance....
Vegas-V10
Thanks for the advice and re-direct. I'll check it out tonight. How do you clean it or what do you clean it with. (Please don't say your hands...HAHA)
Thanks again in advance....
Vegas-V10
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Big Orn:
I took the IAC off and cleaned it with some carb cleaner the other night and now it has smoothed out and idles just fine, no more surging. Getting to the IAC and taking it off is a PITA alright!!! My wife comes out to the garage and just laughs at me cussing at the truck and sprawled all over the engine!!! HAHA.
I guess we bring it on our selves 'wrenching' on our own rigs....
Again thanks for the input.....
Vegas-V10
I took the IAC off and cleaned it with some carb cleaner the other night and now it has smoothed out and idles just fine, no more surging. Getting to the IAC and taking it off is a PITA alright!!! My wife comes out to the garage and just laughs at me cussing at the truck and sprawled all over the engine!!! HAHA.
I guess we bring it on our selves 'wrenching' on our own rigs....
Again thanks for the input.....
Vegas-V10
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Good news, Vegas and thanks for the feedback. We all need that to put some of our headaches to bed... 
You might want to start putting a few pennies in a jar for a new one - but, hopefully, that's miles down the road.
You might want to start putting a few pennies in a jar for a new one - but, hopefully, that's miles down the road.
