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1993 Chevrolet Astro CL 4.3L Poor Idle Quality, MIL Lamp on
Posted to GM Driveability on 6/29/2006 5 Replies

This TBI (Not CMPI) astro van has a very bad idle and acts as if the linear egr valve is stuck open. However the datrastream on my OTC scan tool also indicates a MAT reading of -40F on a 100 degree day. This 4.3 dosen't seem to have any IAT or MAT. Is there a ...

5 Replies Received (View Replies)

  Related Documents & Media  1993 Chevrolet Astro CL

 
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet Astro CL

VIN 1GNDM15Z6P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsTIER 1
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

32egr malfunction
43knock sensor
Message Closed w/FIX

car Vehicle Data

1993 Chevrolet Astro CL

VIN 1GNDM15Z6P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsTIER 1
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

32egr malfunction
43knock sensor