1998 Ford F-150

Tiny
SANMAR
  • MEMBER
  • 1998 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
Engine starts, but it will not stay on. If I give it some gas it will run, but if let it go, it will stall. Truck does not idle.

It happened before, but after a few tries, it started and did not have problems through that day. Today is cold and it will not stay on after a lot of tries.

What could be the problem?

Mario
Saturday, March 8th, 2008 AT 3:22 PM

3 Replies

Tiny
FLEXY5
  • MECHANIC
  • 512 POSTS
Sounds like it needs an IAC valve. You can try to clean it, but I haven't had much success with that being a long term solution. It will eventually need to be replaced.
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Saturday, March 8th, 2008 AT 5:18 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,386 POSTS
I have to agree with dave on this one but I have one more question.

Does it idle fine when the engine has warmed up?
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Sunday, March 9th, 2008 AT 9:48 AM
Tiny
SANMAR
  • MEMBER
  • 1 POST
Don't know. When it happened before and it started, after a few tries, it ran good. I did not notice anything different.
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Sunday, March 9th, 2008 AT 12:05 PM

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