× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1997 Chevrolet P30 7.4L Excessive Emissions
Posted to GM Driveability on 9/30/2010 12 Replies

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...

12 Replies Received (View Replies)

  Related Documents & Media  1997 Chevrolet P30

 
Message Closed w/FIX

car Vehicle Data

1997 Chevrolet P30

VIN 1GBLP37J4V
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways
Misc.Cutaway

Trouble Codes

P0121Throttle Position Sensor Range/Performance
Message Closed w/FIX

car Vehicle Data

1997 Chevrolet P30

VIN 1GBLP37J4V
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways
Misc.Cutaway

Trouble Codes

P0121Throttle Position Sensor Range/Performance