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1989 Chevy Corsica ERRATIC IDLE

Tiny
DRGNKPR17201
  • MEMBER
  • 1989 CHEVROLET CORSICA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 132,025 MILES
ALRIGHT I REPLACED THE AIR CONTROL VALVE, O2 SENSOR, THROTTLE POSITION SENSOR, CAT, AND AIR TEMP SENSOR, RUNS FINE GOING DOWN THE ROAD BUT WHEN I COME TO A STOP THE IDLE STARTS JUMPING UP AND DOWN AND WHEN I PUT IT IN PARK IT STALLS WHAT ELSE DO I NEED TO REPLACE TO GET IT TO RUN PROPERLY
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Tuesday, May 20th, 2008 AT 1:56 PM

6 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
The tps is adjustable, did you set it properly. Did you set the minimum air rate? Did you touch the idle screw? Be honest.
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Tuesday, May 20th, 2008 AT 2:32 PM
Tiny
MASTER TECH DAN
  • MECHANIC
  • 83 POSTS
Check and see if you have a vaccum leak also check the egr valve to see if it is open you should also unplug the 4 wire harness at the trans.
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Tuesday, May 20th, 2008 AT 2:33 PM
Tiny
DRGNKPR17201
  • MEMBER
  • 4 POSTS
No I didnt touch the screw and how do you set ajust the tps
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Tuesday, May 20th, 2008 AT 2:39 PM
Tiny
DRGNKPR17201
  • MEMBER
  • 4 POSTS
How do u adjust the minimum air rate
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Tuesday, May 20th, 2008 AT 2:40 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
You need a scan tool to watch the angle and voltage. And then set angle to 0 and set minimum air rate to as close to 14 as you can get. Tps should be about.68 volts at idle.
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Tuesday, May 20th, 2008 AT 3:17 PM
Tiny
DRGNKPR17201
  • MEMBER
  • 4 POSTS
I will let the shop do that and thank you for your help
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Tuesday, May 20th, 2008 AT 3:32 PM

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