Question about 2001 Toyota Corolla

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The car shakes when in idle and when you put it into gear and runs rough. What could be the problem?

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  • benusa86 Apr 17, 2009

    The check engine light is not on.

  • yadayada
    yadayada May 11, 2010

    is the check engine light on?

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2 Answers

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  • Toyota Master
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Do the following, it should make the problem better, but it will not cure it completely.
Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Apr 17, 2009

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  • Expert
  • 150 Answers

Check for misfires next check the i.a.c.

Posted on Apr 17, 2009

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: Rough idle, Car shakes, sputters and misfires upon acceleration

It sounds like you may have a problem feeding the fuel to your engine, I had the same problem with my 89 RS. All the 1989 model's fuel systems were recalled. I think you may need a new fuel pump. The fuel pump is located inside the gas tank in the rear of the car right under the rear axle. The fuel pump itself isn't too expensive, but with other small parts such as the electrical harness upgrade and fuel filter and the labor you should be looking somewhere in the $500 range. I hope this helps.

Posted on Jan 12, 2009

alicantecoli
  • 22095 Answers

SOURCE: Rattle/Shake during normal use, Rough Idle

1996 ,wow its classic its over 10yrs of age ,,,,,,renew it sounds like engine is finished

Posted on Feb 13, 2009

Molson02536
  • 3854 Answers

SOURCE: Rough idle only when in gear.

The Air Idle Control Valve (IAC) may be bad or dirty with carbon build up. Check for loose wire, remove and try to spraying it with throttle body cleaner to clean the carbon out and dry it with a hair dryer before installing.
The other thing to look for to is stuck EGR valve. same process as the (IAC) as to cleaning it too. If both are beyond cleaning then replace it.
You can go to Auto Zone and have the car scanned for any DTC codes which would indicate any problems with the (IAC) and EGR's performance.
The other thing to that would make the engine shake at low RPM's is bad spark plug and wire or low engine compression, but that would give you problems through out the whole engine's performance.
Good luck and hope this helps, Start with the (IAC) and EGR as to cleaning and scanning the engine.

Posted on May 28, 2009

fknstart
  • 404 Answers

SOURCE: starts up fine idles rough put in gear car dies

check plugs n fuel filter

Posted on Jun 15, 2009

  • 583 Answers

SOURCE: Rough low idle in gear when stopped at a light.

probable vacuum leak query brake booster

Posted on Jul 26, 2009

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