cold start

Old 11-06-2018, 11:06 AM
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cold start

2001 f150 4.6 v8 cold below 40 degrees starts then dies I have to warm up in order for it to keep running once temp is up runs fine
Old 11-06-2018, 12:33 PM
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Clean or replace your IAC valve.
Old 11-06-2018, 04:52 PM
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Also check to make sure the connector is plugged in firmly too.
Old 11-06-2018, 07:11 PM
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Originally Posted by glc View Post
Clean or replace your IAC valve.
Yep. The IAC valves tend to get "morning sickness" when the weather turns cooler. They build up gumminess over the summer and that stuff thickens when it gets cool enough causing the valve to stick.

Cleaning is usually a temporary measure, the problem usually returns before too long as you can't really clan all the crud out.

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