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1990 GMC 7000 366CID Misfire, exhaust too hot
Posted to GM Driveability on 11/22/1999

under a load at highway speeds the exhaust manifolds get red hot and melt the ignition wires. we suspected that the reman engine had a wrong cam in it but the company sent us a replacement engine and we have the same problem. the computer keeps calling for...

 
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car Vehicle Data

1990 GMC 7000

VIN 1GDJ7D1P2L
Engine366 / 8 cyl
Emissionsus federal
SymptomsMisfire, Exhaust Too Hot
OccursHot, Under Load, Cruise
Misc.Box Truck
Message Closed

car Vehicle Data

1990 GMC 7000

VIN 1GDJ7D1P2L
Engine366 / 8 cyl
Emissionsus federal
SymptomsMisfire, Exhaust Too Hot
OccursHot, Under Load, Cruise
Misc.Box Truck