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1997 Chevrolet P30 7.4L Excessive Emissions
Towed in customer thought head gasket problem. Smoke out tail pipe was black. Inspected and found a spark plug wire melted. Replaced plugs and wires. Autolite double platnium. Engine still ran rich and from o2 readings and pulling plugs only on bank 2. This is...
FIX posted 10/6/2010
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Message Closed w/FIX
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| VIN | 1GBLP37J4V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | Always |
| Misc. | Cutaway |
Trouble Codes
| P0121 | Throttle Position Sensor Range/Performance |
Message Closed w/FIX
Vehicle Data
1997 Chevrolet P30
| VIN | 1GBLP37J4V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | Always |
| Misc. | Cutaway |
Trouble Codes
| P0121 | Throttle Position Sensor Range/Performance |
12 Replies Received
12 Replies Received
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