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1990 GMC 7000 366CID Misfire, exhaust too hot
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...
FIX posted 2/22/2000
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Message Closed
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| VIN | 1GDJ7D1P2L |
| Engine | 366 / 8 cyl |
| Emissions | us federal |
| Symptoms | Misfire, Exhaust Too Hot |
| Occurs | Hot, Under Load, Cruise |
| Misc. | Box Truck |
Message Closed
Vehicle Data
1990 GMC 7000
| VIN | 1GDJ7D1P2L |
| Engine | 366 / 8 cyl |
| Emissions | us federal |
| Symptoms | Misfire, Exhaust Too Hot |
| Occurs | Hot, Under Load, Cruise |
| Misc. | Box Truck |