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1991 Pontiac Trans Sport 3.1L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
found fuel pressure high around 18 lbs i have a spec of 9-13 we have checked the return line and replaced the regulator in throttle body without any decrease in pressure. then tried another complete throttle body. dead headed fuel pressure is 20lbs fuel volume...
FIX posted 3/22/2007
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Related Documents & Media | VIN | 1GMCU06D2M |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / tbi |
| Emissions | fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, After a Hot Soak |
Trouble Codes
| 45 | rich exhaust |
Message Closed w/FIX
Vehicle Data
1991 Pontiac Trans Sport
| VIN | 1GMCU06D2M |
| Engine | 3.1 L / 6 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / tbi |
| Emissions | fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always, After a Hot Soak |
Trouble Codes
| 45 | rich exhaust |
Video