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1985 Chevrolet Caprice 5.0L Ping/detonation
Posted to GM Driveability on 3/5/2001

Greetings Techs,

Really basic engine and control, but still has me stumped. The vehicle has a very bad ping/detonation after warm up, under a load after the lock up has engaged and part throttle. Timing is good at 0 Deg. I've checked the ESC/EST system, and t...

 
Message Closed w/FIX

car Vehicle Data

1985 Chevrolet Caprice

VIN 1G18N69H7F
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryCARB / 4BBL
SymptomsPing/Detonation
OccursAlways, Hot, Under Load, After Lock Up Comes On
Message Closed w/FIX

car Vehicle Data

1985 Chevrolet Caprice

VIN 1G18N69H7F
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryCARB / 4BBL
SymptomsPing/Detonation
OccursAlways, Hot, Under Load, After Lock Up Comes On