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1986 Chevrolet Corvette 5.7L Poor Idle Quality, Surge, Cuts out, Misfire, Poor Fuel Economy
Posted to GM Driveability on 1/14/2006 6 Replies

Own personnel car, restoring. Car won't idle, hesitates, backfires when throttle depressed at all timing settings, sounds very irregular. Replace ECM and Memcal. Had these codes before replacing ECM. Scan tool continues to get "Communication Mismatch" when I s...

6 Replies Received (View Replies)

  Related Documents & Media  1986 Chevrolet Corvette

 
Message Closed w/FIX

car Vehicle Data

1986 Chevrolet Corvette

VIN 1G1YY0783G
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SF1
EmissionsFEDERAL
SymptomsPoor Idle Quality, Surge, Cuts Out, Misfire, Poor Fuel Economy
OccursAlways

Trouble Codes

41incorrect prom cylinder select
42esc
43esc
44lean
Message Closed w/FIX

car Vehicle Data

1986 Chevrolet Corvette

VIN 1G1YY0783G
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SF1
EmissionsFEDERAL
SymptomsPoor Idle Quality, Surge, Cuts Out, Misfire, Poor Fuel Economy
OccursAlways

Trouble Codes

41incorrect prom cylinder select
42esc
43esc
44lean