× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1987 Buick Skylark 2.5L MIL Lamp on
Posted to GM Driveability on 5/9/2000

CAR TOWED IN WITH CODES 34 (MAP SENSOR) , 42 (EST) AND 45 (RICH EXHAUST) LOGGED IN COMPUTER AND CAR HAD NO POWER AT ANY ROAD SPEED. REPLACED MAP SENSOR AND CLEARED CODES. CAR NOW HAS NORMAL POWER BUT REPEATEDLY RESETS CODE 42 . TAP TEST OF ECU FOUND NO PROBLEM...

 
Message Closed

car Vehicle Data

1987 Buick Skylark

VIN 1G4ND5149H
Engine2.5 L / 4 cyl
EmissionsCA
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

42elect spark timing malfunction
Message Closed

car Vehicle Data

1987 Buick Skylark

VIN 1G4ND5149H
Engine2.5 L / 4 cyl
EmissionsCA
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

42elect spark timing malfunction