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1991 Chevrolet S10 2.5L Excessive Emissions, Poor Idle Quality, Backfire
Vehicle first came into shop with a cold start problem. I first scanned for codes and found code 33 which is map sensor circuit high. replaced map sensor and vehicle started up great. Cleared code and code did not come back. Vehicle also had an idle probelm(ro...
FIX posted 1/24/2001
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Message Closed w/FIX
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| VIN | 1GCCS14A5M |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Backfire |
| Occurs | Idle, Snap Throttle |
Trouble Codes
| 33 | Map sensor circuit high. |
Message Closed w/FIX
Vehicle Data
1991 Chevrolet S10
| VIN | 1GCCS14A5M |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Backfire |
| Occurs | Idle, Snap Throttle |
Trouble Codes
| 33 | Map sensor circuit high. |
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