1989 Chevy Corsica ERRATIC IDLE

1989 CHEVROLET CORSICA
132,025 MILES • 6 CYL • FWD • AUTOMATIC
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DRGNKPR17201
  • MEMBER
  • 4 POSTS
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
May 20, 2008 at 1:56 PM
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MASTERTECHTIM
  • ✓ASE Certified Mechanic
  • 4,750 POSTS
  • ASE Certified Mechanic
the tps is adjustable, did you set it properly. did you set the minimum air rate? did you touch the idle screw? be honest.
May 20, 2008 at 2:32 PM
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MASTER TECH DAN
  • ✓ASE Certified Mechanic
  • 83 POSTS
  • ASE Certified Mechanic
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.
May 20, 2008 at 2:33 PM
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DRGNKPR17201
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  • 4 POSTS
no i didnt touch the screw and how do you set ajust the tps
May 20, 2008 at 2:39 PM
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DRGNKPR17201
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  • 4 POSTS
how do u adjust the minimum air rate
May 20, 2008 at 2:40 PM
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MASTERTECHTIM
  • ✓ASE Certified Mechanic
  • 4,750 POSTS
  • ASE Certified Mechanic
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.
May 20, 2008 at 3:17 PM
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DRGNKPR17201
  • MEMBER
  • 4 POSTS
i will let the shop do that and thank you for your help
May 20, 2008 at 3:32 PM
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