Idle high when I start and then shuts off - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Idle high when I start and then shuts off

  #1  
Old 12-12-2018
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Join Date: Dec 2018
Location: Riverbank, California
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Idle high when I start and then shuts off

why does my 99 4.0 v6 ranger idle high when I start it and then idles down and shuts off?
 
  #2  
Old 12-12-2018
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Join Date: Jan 2014
Location: Vancouver, BC
Posts: 10,959
Welcome to the forum

Assuming engine starts back up and drives OK after that then..............................

Clean IAC Valve and MAF sensor

IAC Valve pictures here: https://www.explorerforum.com/forums...-w-pics.84220/
 
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