
1991 Buick Skylark 3.3L Poor Idle Quality, Misfire, MIL Lamp on
Ok..This car came in with customer saying sometimes it backfired a lot while at idle...Code 42 is current. Electronic Spark Timing.... Now I have had some work with the 3.8 in this area so I am thinking its a similar setup... It must have a bad connection..in ...
FIX posted 8/20/2004
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Message Closed w/FIX
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VIN | 1G4NV54N3M |
Engine | 3.3 L / 6 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / MPFI |
Emissions | OBD1 |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Idle |
Trouble Codes
42 | EST Circuit Error |
Message Closed w/FIX
Vehicle Data
1991 Buick Skylark
VIN | 1G4NV54N3M |
Engine | 3.3 L / 6 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / MPFI |
Emissions | OBD1 |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Idle |
Trouble Codes
42 | EST Circuit Error |