1999 Expy will not idle until engine warms
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Joined: Sep 2003
Posts: 2
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1999 Expy will not idle until engine warms
My 1999 expedition has run great until a week ago.
It will start fine but will not idle. The engine looses RPM and then dies. I can hold accelerator steady at 1000 RPM and the engine will start to fluctuate between 1500 and 500 RPM. If I take my foot off the accelerator the engine dies. After the car warms up it runs fine.
If anyone can help I would appreciate it.
It will start fine but will not idle. The engine looses RPM and then dies. I can hold accelerator steady at 1000 RPM and the engine will start to fluctuate between 1500 and 500 RPM. If I take my foot off the accelerator the engine dies. After the car warms up it runs fine.
If anyone can help I would appreciate it.
Postmaster
Joined: May 2002
Posts: 3,028
Likes: 1
From: Annapolis, Maryland
1999 Expy will not idle until engine warms
Not sure who closed this thread or why, but your IAC valve is probably to blame. 2 bolts, some stretching, and about $65 from the dealer. Click the link in my signature and hit "send" and you'll get a copy of the Expedition Owner's Guide which has a great article about fixing the IAC.
XXL
XXL
IAC Valve
Postmaster
Joined: May 2002
Posts: 3,028
Likes: 1
From: Annapolis, Maryland
Re: IAC Valve
Originally posted by bricmanvic
You hit the nail on the head. I removed the valve cleaned it and the engine runs fine.
Thanks for your help.
You hit the nail on the head. I removed the valve cleaned it and the engine runs fine.
Thanks for your help.
I just didn't want you to freak out if the problem started up again.
Take care!
XXL
