4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

High idle problem when car starts

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Old 04-28-2017, 01:30 PM
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Dave Simmons
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Exclamation High idle problem when car starts

Hello i have a 1998 ford mustang 3.8 v6 that starts up and sits about 1500 then drops to 1300 then 1000 then finally like 800 after about 3-4 minutes is this normal? What could cause this and maybe some ideas how to fix? no vacuum leaks . i attached a video below. Thanks for any advice.

***VIDEO***

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Old 04-28-2017, 01:41 PM
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meant to post this to v6 thread not sure how to delete and move
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