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1998 Chevrolet C1500 Cheyenne 5.7L Misfire, MIL Lamp on
Posted to GM Driveability on 9/26/2003 19 Replies

This truck came back with the same code (P0300) 11,000 miles after the repairs listed below.

Freeze frame data shows P0305 and:

3163 rpm

93°C, 200°F ECT

89kPA, 1.75V MAP

+16% STFT Bn 1

-2% LTFT Bn 1

+5% STFT Bn 2

-2% LTFT Bn 2

Closed loop

41% load ...

19 Replies Received (View Replies)

  Related Documents & Media  1998 Chevrolet C1500 Cheyenne

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet C1500 Cheyenne

VIN 2GCEC19R7W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CPI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursCruise, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet C1500 Cheyenne

VIN 2GCEC19R7W
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CPI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursCruise, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
P0305Cylinder 5 Misfire Detected