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Mustang idle

Tiny
LOUK0311
  • MEMBER
  • 2005 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 56,000 MILES
I have a 2005 mustang gt mods to the car are predator diablo sport tuner c and l cold air intake and borla exhaust with off-road x pipe I purchased the car a month ago and with the ac on the car has stalled when coming to a stop after pushing the clutch in the idles will drop low come up then stall doesnt happen every time but still happens. Hasnt happened with ac off but even with ac off idle is not very smooth and rpms still drop low and take a few seconds to level off when the clutch is pushed in. Also on cold start ups the car is rough and has stalled on start up twice. Any information to trouble shoot is appreciated.
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Wednesday, August 10th, 2011 AT 7:32 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check for vacuum leaks. Also, check the idle air control valve.
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Monday, September 12th, 2011 AT 5:32 AM
Tiny
LOUK0311
  • MEMBER
  • 2 POSTS
I found out 2005+ mustangs have no iac so to correct the problem I bought a new gt500 throttle body and car runs amazing now
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Monday, September 12th, 2011 AT 5:42 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I'm glad you got it fixed. I thought they had an IAC. There are too many changes all the time to keep up with everything.
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Monday, September 12th, 2011 AT 5:51 AM

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