Idle Air Control Valve?
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Mountain Pass
Joined: Mar 2004
Posts: 242
Likes: 3
From: Gt. Falls, MT
Idle Air Control Valve?
My problem started yesterday when I started my truck up and when I stepped on the gas pedal the truck wanted to die, but was able to keep it running, when it warmed up it was fine, it was about 64 degrees outside. This morning, it was the same way but worse but again once it warmed up it was ok, but I did notice that it seemed it wanted to miss when i revved it up after being warmed up once in a while. Any suggestions would be helpful.
2000 f250, v-10, stock except flowmaster and y-pipe, 58,000 mi
2000 f250, v-10, stock except flowmaster and y-pipe, 58,000 mi
Fleet Mechanic
Joined: Sep 2002
Posts: 1,769
Likes: 7
From: Gretna ,LA.
Sure sounds like an IAC problem,no one can say for sure but that's what it sounds like.My 2000 does it fairly regular,it runs fine, it just wont idle.I rev it up pretty good and it clears up.In case you dont where it is,it is silver, about the size of a 35 mm canister located on the back of the throttle body plenum.
Posting Guru
Joined: Jan 2003
Posts: 2,181
Likes: 3
From: Eastern CT.
What do we do too it when its off,? Clean it with something or replace it ??
Mine still Idels a little ruff,,once it sounded like it was skipping for a few seconds ??
I wonder if the IAC is the culprit ?
Later,,,,,,,,,,,Mark
Mine still Idels a little ruff,,once it sounded like it was skipping for a few seconds ??
I wonder if the IAC is the culprit ?
Later,,,,,,,,,,,Mark
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by m350
What do we do too it when its off,? Clean it with something or replace it ??
Mine still Idels a little ruff,,once it sounded like it was skipping for a few seconds ??
I wonder if the IAC is the culprit ?
Later,,,,,,,,,,,Mark
Mine still Idels a little ruff,,once it sounded like it was skipping for a few seconds ??
I wonder if the IAC is the culprit ?
Later,,,,,,,,,,,Mark
Does your engine refuse to idle or does it sound like it's missing/idling rough?
Sometimes this is the EGR acting up, but I would think you would have seen the Service Engine light if it does it all the time.
When the EGR valve goes south, the engine will idle, but rough. Revving it up then clears it up, but then at idle it returns.
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Posting Guru
Joined: Jan 2003
Posts: 2,181
Likes: 3
From: Eastern CT.
Big Orn, The truck idles ok,,just alittle rough,,I heard alot of V-10's do this,,The truck runs great, just that little roughnes . No SES lights or anything.
Mark
Mark
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Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally Posted by m350
Big Orn, The truck idles ok,,just alittle rough,,I heard alot of V-10's do this,,The truck runs great, just that little roughnes . No SES lights or anything.
Mark
Mark
The engine purrs like a kitten at initial startup, then it begins with it's slight choppy idling.
Mine always has...
Thread Starter
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Mountain Pass
Joined: Mar 2004
Posts: 242
Likes: 3
From: Gt. Falls, MT
Well I cleaned the throttle body and replaced the IAC, and it's good to go, I also wondered about EGR issues but this seemed to do the trick, as for the cold, Last winter up here in north central Mt, it was -32 degrees F, not being plugged in the motor did fine, I appreciate all the info, comments, suggestions. Ain't this a GREAT site!!
Freshman User
Joined: Aug 2004
Posts: 31
Likes: 0
From: Texas
Glad your problem is fixed....but like was said earlier, keep your eye on that EGR the DPFE sensor and the valve assembly are notorious for failure due to carbon build up. When i replaced my DPFE i was told to prevent it from happening again, that it would be in my best interest to religiously use RESTORE because it will help (not cure but help) the prevention of carbon build up in general.
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