1993 Ford Ranger idle speeds

Tiny
ROBERT ECCLES
  • MEMBER
  • 1993 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 175,000 MILES
Idle somewhat erratic after warmup. About 900 to 1000, when shifting to drive or reverse the revs jump up 400 or so and cause a hard shift into gear. No codes are set. Intake manifold leak checked with no leaks found. New iac installed and no help. Any ideas?
Sunday, December 23rd, 2007 AT 8:45 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You 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!
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Sunday, December 23rd, 2007 AT 9:50 AM

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