Won't resond above rough idle, throttle to the floor

1994 CHEVROLET CAVALIER
180,000 MILES
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RNDOTSON65
  • MEMBER
  • 1 POST
1994 Cavalier 2.2L 4 cyl. manual trans. When I start it, I have to have gas pedal floored & keep it there or it won't stay running. Runs at a rough low idle. Some days I can get it to run (gas pedal released) idle a bit rough, but it will respond to pressure on pedal. I drove it down to the mailbox & back ( about 2 blocks) & it goes back to above mentioned response. Any ideas?? Thank you for any help.
Jun 21, 2012 at 12:21 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
sounds like the cat converter is blocked and needs to be replaced. it can be confirmed with a back pressure test.

Roy
Jun 21, 2012 at 12:29 PM
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RENEGADE65
  • MEMBER
  • 29 POSTS
remove any deposits that might prevent a good seal between the IAC valve
Jan 3, 2013 at 4:44 PM
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