1993 CHEVROLET

  • Tiny
  • Walt Sisne
  • 1993 CHEVROLET

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

Do you
have the same problem?
Yes
No
Friday, June 4th, 2010 AT 12:04 PM

1 Reply

  • Tiny
  • Hmac300
  • EXPERT
  • 45,632 POSTS

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.

Was this
answer
helpful?
Yes
No
Friday, June 4th, 2010 AT 7:35 PM

Please login or register to post a reply.

Other Engine Runs Rough Questions