1994 Toyota Celica Engine misfire

1994 TOYOTA CELICA

120,000 MILES • 4 CYL • 4WD • MANUAL

MOSHAFUSION01

MEMBER
4 POSTS

I have a Toyota Celica Gt4 and when it reaches 2000 rpm the engine light comes and 4000 rpm its misfires or when i go really fast. Its Drives fine if i dont go fast.

I went to garage which only deals with sports and performance cars and they said it is a knock sensor, So i got a knock sensor installed and it still misfires. Please help.

Sep 19, 2010 at 8:04 AM

BILLYMAC

✓ASE Certified Mechanic
2,204 POSTS

Hi
if the knock sensor did not solve the prob then most likely it is because the timeing is going to far out of range.

the knock sensor does exactly what it say's .it listens for a knock when it senses one it tells the ecm to advance timeing .

so if the ecm can.t advance timing enough to satisfy the knock .

possibly a stretched timeing belt or chain . i would check all of the timing

Sep 19, 2010 at 8:11 AM

MOSHAFUSION01

MEMBER
4 POSTS

Thanks for your help. I actually had a slight feeling it could be something to do with that. But anyway thank you very much.

Sep 19, 2010 at 1:15 PM

MOSHAFUSION01

MEMBER
4 POSTS

Hi the problem is solved. The car was over boosting so the mechanic manually adjusted the boot controler. But he reccomnded a electronic boost controller woud be better.

Nov 15, 2010 at 8:49 PM

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