× 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
1998 Pontiac Grand Prix GT 3.8L Excessive Emissions
Posted to GM Driveability on 11/19/2009 10 Replies

Vehicle failed an emission test. High CO and HC readings at idle. The pre-cat O2 sensor remains high voltage at a stop after a cruise. Installed new spark plugs and wires and replaced the O2 sensor. The new one does the exact same thing, it stays high voltage ...

10 Replies Received (View Replies)

  Related Documents & Media  1998 Pontiac Grand Prix GT

 
Message Closed w/FIX

car Vehicle Data

1998 Pontiac Grand Prix GT

VIN 1G2WP52K3W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIdle
Message Closed w/FIX

car Vehicle Data

1998 Pontiac Grand Prix GT

VIN 1G2WP52K3W
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIdle