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1993 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on
Posted to GM Driveability on 10/15/2004 12 Replies

Hi Techs - I'm scratching my head on this one. We replaced the longblock on this truck six months ago, and it ran fine until yesterday, when it idled rough on startup, the CEL came on, and it smoothed out somewhat. The truck then drove OK for a half-hour and s...

12 Replies Received (View Replies)

  Related Documents & Media  1993 Chevrolet C1500 Cheyenne

 
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car Vehicle Data

1993 Chevrolet C1500 Cheyenne

VIN 1GCEC14K6P
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, MIL Lamp On
OccursIntermittently

Trouble Codes

33MAP sensor high
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet C1500 Cheyenne

VIN 1GCEC14K6P
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, MIL Lamp On
OccursIntermittently

Trouble Codes

33MAP sensor high