ENGINE PERFORMANCE PROBLEM1993 OTHER CHEVROLET ...

1993 Chevrolet

Tiny

walt sisne

June, 4, 2010 AT 12:04 PM

Engine Performance problem
1993 Other Chevrolet Models 6 cyl Two Wheel Drive Automatic

runs good when engine light is on but when light is off runs poorly and is also using alot of gas also has a little knocking sound

FOUND 4561 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

1 Answer

Tiny

hmac300

June, 4, 2010 AT 7:35 PM

If the service light is on you are in open loop and have a sensor not working. That's why you aren' tgetting good fuel mileage. Get it checked out.

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