1998 ford expedition shaking
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1998 ford expedition shaking
Hello I have a question we have a 98 expy with a 5.4 4x4 and when it is in park it seems to shake alot like its about to die i then put it in drive even if i am not moving and it decreases alot any ideas would be appericated its not my daily driver anymore.
Fleet Owner
Joined: Apr 2008
Posts: 24,319
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From: 0,0,1
The IAC valve is dirty and needs to be cleaned or replaced.
Here's how to clean it: https://www.ford-trucks.com/forums/9...4l-triton.html
Here's how to clean it: https://www.ford-trucks.com/forums/9...4l-triton.html
Freshman User
Joined: May 2006
Posts: 49
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From: Jacksonville, FL
Also look for a vacuum leak on the hoses around the back side of the battery box it's a very common problem, and if you've got more than 60k miles on your spark plugs they may be at fault as well.
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