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1997 GMC K1500 Sierra SL 5.7L Poor Idle Quality, Misfire
Posted to GM Driveability on 5/3/2005 23 Replies

When vehicle checked on start-up, there is a misfire on cyl. 5&7. After a few minutes, misfire changes to 1&8. I have replaced plug wires number 1 and 8, injectors 1 and 8. It threw a P1364 code. I phased distributor in, eliminated P1364 code. Still have P0300...

23 Replies Received (View Replies)

  Related Documents & Media  1997 GMC K1500 Sierra SL

 
Message Closed w/Summary

car Vehicle Data

1997 GMC K1500 Sierra SL

VIN IGTEK14R3V
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI Vortec
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle
Misc.Po300

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

1997 GMC K1500 Sierra SL

VIN IGTEK14R3V
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI Vortec
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle
Misc.Po300

Trouble Codes

P0300Multiple Misfire Detected