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1999 Chevrolet Malibu 3.1L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 5/19/2004 3 Replies

P0336 came bake found .6 volts on 24X circuit A @pin 70 on PCM. Ground is good. Tach is in-op and when I back feed circuit A with battery voltage Tach works fine and idle smooths out. I can't find what circuit feeds the 12volts.

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car Vehicle Data

1999 Chevrolet Malibu

VIN 1G1WD52M3X
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0336CKP Sensor 1 Circuit Intermittent Signal
Message Closed

car Vehicle Data

1999 Chevrolet Malibu

VIN 1G1WD52M3X
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / PFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursAlways

Trouble Codes

P0336CKP Sensor 1 Circuit Intermittent Signal