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1989 Toyota 4Runner Iradic Idleing

Tiny
MUDDINNATE
  • MEMBER
  • 1989 TOYOTA 4RUNNER
  • 4 CYL
  • 4WD
  • MANUAL
  • 160,000 MILES
Whenever I come to a stop after diving down the road my truck will start to idle high then low again and again. This does this every time I stop after driving? This did this on another 4runner I had. Im sure this is common can yougive me a hint. Thanks alot.
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Sunday, February 24th, 2008 AT 10:15 AM

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!

Check the computer for codes, here's how.


https://www.2carpros.com/forum/automotive_pictures/62217_Codes_Reading1_copy_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_Codes_Reading3_1.jpg



https://www.2carpros.com/forum/automotive_pictures/62217_Codes_Reading4_1.jpg

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Sunday, February 24th, 2008 AT 2:04 PM

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