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1992 Toyota Corolla My Corolla always stays at 2k or 3k RPM

Tiny
MACW46
  • MEMBER
  • 1992 TOYOTA COROLLA
Engine Performance problem
1992 Toyota Corolla 4 cyl Two Wheel Drive Automatic

Hi, i ´m new here and I hope to find a solution for my car.

The car always stays at 2k or 3k, i ´ve checked the throttle and is ok. The air filter is ok too. The choke sometimes is activated even when the car is warm. I ´ve turned in a screw with a spring behind the carburetor and gets better a little.

I dont know what to do.

Thanks.

P.S. Sorry for my english, I speak spanish.
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Wednesday, March 18th, 2009 AT 1:53 AM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What do you have here a Carb or and EFI?

If its a carb the fast idle cam needs re-adjusting and if its EFI check the idle air control valve and the throttle position sensor and look for vacuum leaks
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Wednesday, March 18th, 2009 AT 6:12 AM
Tiny
MMPRINCE4000
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No Corolla made in the U.S. Came with a carb in 1992. They were all FI.

While the idle can be adjusted on the throttle body, an idle that high is a vacuum leak.

To identify a U.S. Built Corolla, look on inside of open door, where it contacts striker bolt. It will have a sticker that says NUMMI on it.
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Wednesday, March 18th, 2009 AT 6:56 AM
Tiny
MACW46
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This Corolla was made in venezuela and comes with carb. I have seen another carbs like mikunis, keihin, etc, but this carb is very complicated.
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Thursday, March 19th, 2009 AT 1:50 AM
Tiny
MMPRINCE4000
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  • 8,549 POSTS
Then follow Rasmatz's instructions.
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Thursday, March 19th, 2009 AT 5:57 AM
Tiny
MACW46
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  • 3 POSTS
Hey Rasmataz, when you say CAM NEEDS READJUSTING, do you refer to adjust the Cams timing?
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Thursday, March 19th, 2009 AT 12:18 PM
Tiny
RASMATAZ
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Negative-its the fast idle cam adjustment on the Carb to raise the idle during initial cold starts. Choke plate could be sticking partially closed and raising the idle
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Thursday, March 19th, 2009 AT 2:41 PM

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