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1987 Pontiac TransAM-GTA 5.7L Hesitation, Spark Knock >190Deg
This GM starts hard cold but runs perfectly until the Snap On scan tool shows the coolant temp over 195deg F. At this point it has a hesitation every time the throttle is snapped, to the point it will backfire if held at WOT. It exhibits severe detonation,...
FIX posted 1/15/2000
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| VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl |
| Emissions | US |
| Symptoms | Hesitation, Spark Knock >190Deg |
| Occurs | Hot, Under Load, on Accel, After a Hot Soak |
| Misc. | Tpi |
Message Closed
Vehicle Data
1987 Pontiac TransAM-GTA
| VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl |
| Emissions | US |
| Symptoms | Hesitation, Spark Knock >190Deg |
| Occurs | Hot, Under Load, on Accel, After a Hot Soak |
| Misc. | Tpi |
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