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1990 Chevrolet Corvette 5.7L Poor Idle Quality, Hesitation, Misfire
Posted to GM Driveability on 5/30/2004 7 Replies

The co and hc readings that were given are cold and just after the engine goes in to closed loop, at this time the engine starts to adjust like its should but sure seams to go too far ie too lean, it then starts to run very rough and leans out too far. It will...

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Message Closed w/FIX

car Vehicle Data

1990 Chevrolet Corvette

VIN 1G1YY3383L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsOBD I Cal Emmissions
SymptomsPoor Idle Quality, Hesitation, Misfire
OccursHot, on Accel, Idle
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet Corvette

VIN 1G1YY3383L
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsOBD I Cal Emmissions
SymptomsPoor Idle Quality, Hesitation, Misfire
OccursHot, on Accel, Idle