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1996 Chevrolet Impala SS 5.7L Spark Knock
Posted to GM Driveability on 9/11/1998

The problem is a noise that sounds like spark knock. It only happens at hot idle in gear when a load is put on the engine like turn the steering wheel to the lock position when the idle speed is pulled down under 500 rpm. The knock sensor will detect the noise...

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car Vehicle Data

1996 Chevrolet Impala SS

VIN 1G1BL52P2T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursHot, Under Load, Idle
Misc.Police Car
Message Closed

car Vehicle Data

1996 Chevrolet Impala SS

VIN 1G1BL52P2T
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsSpark Knock
OccursHot, Under Load, Idle
Misc.Police Car