Question about 1989 Toyota Camry

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Engine doen't stay idle at steady rpms rev up and down by itself

1989 toyota camry accelerate and dececelerate by itself

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Either you have a vacuum leak, a bad throttle body position sensor, or a bad throttle body.

If the throttle body is drive by wire (electronic) then it would be a bad throttle body.

If the throttle body is drive by cable (manually driven by a cable connected to the gas peddle) then it would be a bad throttle position sensor.

If the throttle body is bad the check engine light wil lbe on. If it is on have your codes read at your local parts dealer for free, and this will give you a clue as to which pices/parts you need to replace.

Have the car leak tested and the vacuum linse inspected for leaks as well.

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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My `94 toyota camry 2.2L, in the morning starts fine the RPM is at 1100, then when it gets warm it goes dowm to 800 RPMs is that normal or it should stays at least between 900 or 1000RPMs, please somebody...


high idle on starting is normal as it is the same as a choke being on. When it drops back it should be around 900. However tacos in cars are not real accurate under a 1000 rpms so have it checked manually with a rev counter. Run the fault codes to check for a problem.

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How do i adjust idle for 1989 toyota camry


Its not exactly adjustable, its controlled by the computer by using the idle air control valve.
If the idle speed is too high, you may have a vac leak, or the idle air control valve may be faulty.

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My 1990 Celica won't stay at a steady idle. It will fluctuate between 1100 and 1800 RPMs every second unless I have it in a gear driving or rev the engine past 2000 RPMs.This started after getting it back...


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It sounds like you may have a vacuum leak. Your car should normally idle at about 700-750 RPM. You said that yours was at about 1000-1500, that is waaay to high. If you have a leak somewhere in the system the car will draw in extra air and it will want to idle much higher and will also be very erratic and hard to drive.

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1 Answer

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i think you might have problems with your idle speed control valve. and cold start valve. have a mechanic clean it first before replacing to save money

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