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1991 Chevrolet Cavalier running rough

Tiny
TRAICOFF
  • MEMBER
  • 1991 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 50,000 MILES
20 minutes our so driving car wants to quit running it runs very rough the converter was glowing red so I cut off but I still have problem I also put new plugs in it please help
Monday, March 3rd, 2014 AT 7:44 PM

4 Replies

Tiny
TY ANDERSON
  • MECHANIC
  • 684 POSTS
If your cataylst is glowing red from just normal driving it sounds like you have a fuel issue. Too much fuel will cause the cataylst to glow red because it is over working burning all the raw fuel.
Whether the fuel injectors, carburator (which ever you have) is allowing too much fuel to enter the combustion camber and disrupting the air/fuel mixture. This would cause a rough idle/running condition with the glowing cataylst.
The MAP sensor could be giving causing the rich condition or the oxygen sensor could be causing this also. These sensors could be giving inaccurate data causing the rich condition. Specialty tool are required to properly diagnose this driveability concern.
Is there a check engine light on?
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Monday, March 3rd, 2014 AT 9:04 PM
Tiny
TRAICOFF
  • MEMBER
  • 3 POSTS
No check engine light is on. Brand new pipes front to back. Done this before new pipes also. Ran it with no converter still did it. Just passed echeck ran good that day
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Monday, March 3rd, 2014 AT 10:16 PM
Tiny
TY ANDERSON
  • MECHANIC
  • 684 POSTS
I think you have a sensor issue. It will be very difficult to narrow down the cause without a check engine light. Specialty tools will be required to diagnose this issue. Testing would be ideal then the engine is having a hard time running and not when it is running good.
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Tuesday, March 4th, 2014 AT 6:17 PM
Tiny
TRAICOFF
  • MEMBER
  • 3 POSTS
Thank you. I will change them sensors and I hope that will fix it. Will let you know what happens. Thanks again for your help.
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Tuesday, March 4th, 2014 AT 6:38 PM

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