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1996 Chevrolet Astro 4.3L MIL Lamp on
Posted to GM Driveability on 6/22/2002 9 Replies

runs fine, check eng lt [...] 172,175. long term & short term fuel trims drop from 128 till code sets, sometimes taking a couple of trips to set. o2 sensors switch. when pcv pulled out of valve cover,and allow pcv to pull fresh air, fuel trim climbs. when hold...

9 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet Astro

 
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet Astro

VIN 1GNDM19W1T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

172system too rich bank1
175system too rich bank 2
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet Astro

VIN 1GNDM19W1T
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

172system too rich bank1
175system too rich bank 2