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1994 Buick Century Special 3.1L Poor Idle Quality, engine races
The engine races to [...] rpm at idle. The IAC counts drop to zero. Checked for vac. leaks. Changed IAC, no change in the idle. Checked for updated prom. Installed updated prom with GM reman ECM still races. Is there any way of checking the intake for a vac. l...
FIX posted 2/20/1999
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| VIN | 1G4AG55M4R |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / MPI |
| Emissions | Not OBD-II Compliant |
| Symptoms | Poor Idle Quality, Engine Races |
| Occurs | Always, Hot, Idle |
Message Closed w/FIX
Vehicle Data
1994 Buick Century Special
| VIN | 1G4AG55M4R |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / MPI |
| Emissions | Not OBD-II Compliant |
| Symptoms | Poor Idle Quality, Engine Races |
| Occurs | Always, Hot, Idle |
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