1989 Toyota 4Runner Iradic Idleing

1989 TOYOTA 4RUNNER
160,000 MILES • 4 CYL • 4WD • MANUAL
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MUDDINNATE
  • MEMBER
  • 1 POST
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.
Feb 24, 2008 at 2:15 AM
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MERLIN2021
  • ✓Experienced 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://images.2carpros.com/forum/automotive_pictures/62217_Codes_Reading1_copy_1.jpg


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


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

Feb 24, 2008 at 6:04 AM
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