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1989 Chevrolet Camaro Iroc-Z 5.7L Poor Idle Quality, Misfire
Posted to GM Driveability on 10/27/2011 15 Replies

Hi This Camero is driving me nuts. It will start and run fine when the engine is cold. As soon as it reaches operating temp it develops a misfire. I have done all the the basic tests. Fuel pressure, Injector balance, vacuum leak. Removed valve covers to check ...

15 Replies Received (View Replies)

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car Vehicle Data

1989 Chevrolet Camaro Iroc-Z

VIN 1G1FP21F4K
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / TPI
EmissionsCA. Vehicle
SymptomsPoor Idle Quality, Misfire
OccursHot, Cruise, Idle
Misc.Tuned Port Injection
Message Closed w/FIX

car Vehicle Data

1989 Chevrolet Camaro Iroc-Z

VIN 1G1FP21F4K
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / TPI
EmissionsCA. Vehicle
SymptomsPoor Idle Quality, Misfire
OccursHot, Cruise, Idle
Misc.Tuned Port Injection