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1991 Pontiac Grand Prix SE 3.1L Poor Idle Quality, Surge, Cuts out, Stall, MIL Lamp on
Hello Group. This grand prix seems to have a really intermittant rough idle. It seems that when it does it the engine is loading up. When it idles rough the o2 sensor voltage goes lean and the map voltage goes high due to low engine vacuume. I have tried block...
FIX posted 12/21/2000
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| VIN | 1G2WJ14T1M |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / mpi |
| Emissions | ca emissions |
| Symptoms | Poor Idle Quality, Surge, Cuts Out, Stall, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| 33 | map voltage high |
Message Closed w/FIX
Vehicle Data
1991 Pontiac Grand Prix SE
| VIN | 1G2WJ14T1M |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / mpi |
| Emissions | ca emissions |
| Symptoms | Poor Idle Quality, Surge, Cuts Out, Stall, MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| 33 | map voltage high |
Video