1994 Ford Ranger idles weird

Tiny
JJG22
  • MEMBER
  • 1994 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
I have a 94 ranger with about 180000 miles and when I start it up and its idling it goes up and down and almost feels like its jumping. Once I get it going it drives pretty good but when I come to a stop it does it again so im just trying to figure out what that could be?
Monday, July 21st, 2008 AT 12:18 PM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You may have a vacuum leak, get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs! If that doesnt do it, you may need a new idle air control valve, it's bolted to the throttlebody
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Monday, July 21st, 2008 AT 12:30 PM

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