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1993 Toyota 4Runner PLEASE RESPOND! Stalls during decelera

Tiny
TNALLSINTEXAS
  • MEMBER
  • 1993 TOYOTA 4RUNNER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 179,000 MILES
I've noticed several other posts from mid-90's 4 runner owners about this same problem. But no answers. Someone please offer a place to start looking for a solution! The problem: after getting good and warmed up on the road, when you begin to decelerate like stopping at a red light, rpm's fluctuate unnaturally, engine runs rough and dies. It will start right back up, but if you can't accelerate immediately, it dies again. Solutions we've tried include checking for trash in the gas tank, clogged fuel filter, new plug wires, injector cleaner, adjusting idle. What next?
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Wednesday, April 16th, 2008 AT 11:07 AM

2 Replies

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!
Check the idle air control, it's on the side of the throttlebdy.
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Wednesday, April 16th, 2008 AT 11:10 AM
Tiny
TNALLSINTEXAS
  • MEMBER
  • 2 POSTS
Thanks so much for your quick response! I'll try your suggestion and let you know what happens!
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Thursday, April 17th, 2008 AT 10:09 AM

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