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1999 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
Posted to GM Driveability on 1/31/2007 15 Replies

vehicle starts right up and runs good till fast idle starts to drop then idle starts [...] and short term fuel trim will gradually max out with o2 sensors showing very low [...] pressure is good at this time.i had checked for vac leaks with smoke machine both ...

15 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Silverado 1500

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 2GCEK19T1X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Misfire, MIL Lamp On
OccursCold, Idle

Trouble Codes

171lean condition
174lean condition
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Silverado 1500

VIN 2GCEK19T1X
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Misfire, MIL Lamp On
OccursCold, Idle

Trouble Codes

171lean condition
174lean condition