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1991 Oldsmobile Cutlass Calais 2.5L Excessive Emissions, Poor Idle Quality, Surge
Posted to GM Driveability on 5/1/2000

THIS IS FOR A FREIND,I HAVE NOT SPENT A LOT OF TIME WITH THIS,BOTTOM LINE IT WONT PASS ASM EMISSIONS TEST HC AND CO ARE O.K. BUT NOX IS HIGH. INT AND BLM READINGS AT IDLE CLOSED LOOP ARE 128 BLM AND LESS THAN 90 TO 128 THEN SWITCHES BACK TO OPEN LOOP,MY FREIND...

  Related Documents & Media  1991 Oldsmobile Cutlass Calais

 
Message Closed w/FIX

car Vehicle Data

1991 Oldsmobile Cutlass Calais

VIN 1G3NL54U7M
Engine2.5 L / 4 cyl
EmissionsOBD1 FED
SymptomsExcessive Emissions, Poor Idle Quality, Surge
OccursAlways, Hot, Idle, During Warn Up Runs Rough

Trouble Codes

13ho2s open circuit
Message Closed w/FIX

car Vehicle Data

1991 Oldsmobile Cutlass Calais

VIN 1G3NL54U7M
Engine2.5 L / 4 cyl
EmissionsOBD1 FED
SymptomsExcessive Emissions, Poor Idle Quality, Surge
OccursAlways, Hot, Idle, During Warn Up Runs Rough

Trouble Codes

13ho2s open circuit