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1997 Chevrolet Blazer 4.3L Poor Idle Quality, Poor Fuel Economy
Posted to GM Driveability on 11/9/2007 9 Replies

During diagnosis on misfire screen on Motis Knock value is 4.67 Volts with 0 knock retard, unplugging knock from pcm value is still 4.67 with 0 knock retard......What the bleep is going on? Is this related to our concern is it a wild goose chase?

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car Vehicle Data

1997 Chevrolet Blazer

VIN 1GNDT13W3V
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / tuned port
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Poor Fuel Economy
OccursAlways
Message Closed

car Vehicle Data

1997 Chevrolet Blazer

VIN 1GNDT13W3V
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / tuned port
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Poor Fuel Economy
OccursAlways