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
Vehicle Data1997 Chevrolet P30
Trouble Codes
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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 |