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Idle stalling Issue

Tiny
JOHN TRAHAN
  • MEMBER
  • 2009 FORD RANGER
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 241,321 MILES
It is a 1991 not 2009 Ford Ranger. When the truck is idling with the A/C off, it idles fine, but when the A/C is turned on, it shuts off. The throttle body has been cleaned, MAF sensor, TPC Valve, TPS and ECM has been replaced. When the AC is off sometimes I have to apply more gas for it not to shut off. Another thing, if you disconnect the throttle position sensor, it idles rough and runs horrible, but turning on the AC will not stall the truck.
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Friday, July 7th, 2017 AT 7:19 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,070 POSTS
Hello,

It sounds like you have a vacuum leak. Here are to guides that will get us going in the right direction so we can get the problem fixed.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

https://www.2carpros.com/articles/stall-at-idle

Please run some tests and get back to us we are interested to see what it is.

Cheers, Ken

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Sunday, July 9th, 2017 AT 1:06 PM

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