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  • SN95 4.6L Mustang Tech

Help! Problem With 02 4.6

  • Thread starter Thread starter JoshYeuh
  • Start date Start date Nov 24, 2013
J

JoshYeuh

New Member
Nov 24, 2013
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Nov 24, 2013
#1
  • Nov 24, 2013
  • #1
Last night I installed some Moroso 11 bolt Aluminum Valve covers, everything went well I thought. But upon starting the car the idle jumped to 3k rpm and will only go down to about 2k. I have double checked everything and nothing seems to be hooked up wrong. Is it possible I damaged a vacuum line?
What would cause my 2002 mustang to idle so high?
Any help would be greatly appreciated!
 

wmburns

SN Certified Technician
Aug 14, 2009
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Houston Texas
Nov 24, 2013
#2
  • Nov 24, 2013
  • #2
Seems likely to me that there is a vacuum leak somewhere.

But if you failed to hook up the TPS or if the throttle linkage is binding could also cause a high idle.

Here's some more information on how to trouble shoot IAC/idle issues.

http://www.stangnet.com/mustang-forums/resources/troubleshoot-iac-idle-problems-1996-2004.13/
 
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