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1990 Buick Century Custom 3.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on
Posted to GM Driveability on 5/13/2008 12 Replies

Clear codes only one that returned is 88 ECM reset. Sometimes you will lose data stream when it is acting up. I believe the ECM is at fault. My understanding is you need to re-flash this unit after you change it? It has a removable prom. Test we have checked a...

12 Replies Received (View Replies)

  Related Documents & Media  1990 Buick Century Custom

 
Message Closed w/FIX

car Vehicle Data

1990 Buick Century Custom

VIN 1G4AH54N0L
Engine3.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall, MIL Lamp On
OccursHot
Misc.Sedan

Trouble Codes

21TPS volt
88ECM Reset
Message Closed w/FIX

car Vehicle Data

1990 Buick Century Custom

VIN 1G4AH54N0L
Engine3.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall, MIL Lamp On
OccursHot
Misc.Sedan

Trouble Codes

21TPS volt
88ECM Reset