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1990 Chevrolet Lumina 3.1L Poor Idle Quality, Surge, Misfire, MIL Lamp on
Posted to GM Driveability on 4/17/2006 18 Replies

Hope some one can shed some light on this one. The situation:

Vehicle came in with engine running on 4 cylinders. Customer said it would run rough intermittently. I connected interro ign scope and found no spark kv from coil 3/6.

I connected lab scope/curr...

18 Replies Received (View Replies)

  Related Documents & Media  1990 Chevrolet Lumina

 
Message Closed w/Summary

car Vehicle Data

1990 Chevrolet Lumina

VIN 2G1WL51T4L
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsCAN EMISSIONS
SymptomsPoor Idle Quality, Surge, Misfire, MIL Lamp On
OccursCold, Hot, Cruise, Idle

Trouble Codes

33MAP sensor high
Message Closed w/Summary

car Vehicle Data

1990 Chevrolet Lumina

VIN 2G1WL51T4L
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsCAN EMISSIONS
SymptomsPoor Idle Quality, Surge, Misfire, MIL Lamp On
OccursCold, Hot, Cruise, Idle

Trouble Codes

33MAP sensor high