SPONSORED LINKS

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.
SPONSORED LINKS
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
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, March 18th, 2009 AT 6:12 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
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.
Was this
answer
helpful?
Yes
No
Wednesday, March 18th, 2009 AT 6:56 AM
Tiny
MACW46
  • MEMBER
  • 3 POSTS
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.
Was this
answer
helpful?
Yes
No
Thursday, March 19th, 2009 AT 1:50 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Then follow Rasmatz's instructions.
Was this
answer
helpful?
Yes
No
Thursday, March 19th, 2009 AT 5:57 AM
Tiny
MACW46
  • MEMBER
  • 3 POSTS
Hey Rasmataz, when you say CAM NEEDS READJUSTING, do you refer to adjust the Cams timing?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, March 19th, 2009 AT 12:18 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
Was this
answer
helpful?
Yes
No
Thursday, March 19th, 2009 AT 2:41 PM

Please login or register to post a reply.

Related Engine Revs Up Content

Idle Air Control Motor Replacement
GUIDE
Idle Air Control Motor Replacement
The idle air control motor or idle speed control motor is designed to adjust the air flow into the intake manifold at engine idle. Engine idle speed is monitored by the PCM...
VIEW MORE

Sponsored links