× 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
1994 Chevrolet Lumina 3.1L Excessive Emissions
Posted to GM Driveability on 2/22/2008 17 Replies

the scanner is showing lt fuel trim at 156 and fuel trim 148 tps .68 iac 18 map 40 kpa, 1.6v seems to run very nice but won,t pass emissions is the fuel trims supposed to be at 128? and are these readings showing a rich mixture?

17 Replies Received (View Replies)

  Related Documents & Media  1994 Chevrolet Lumina

 
Message Closed w/FIX

car Vehicle Data

1994 Chevrolet Lumina

VIN 2G1WL54T8R
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MPI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1994 Chevrolet Lumina

VIN 2G1WL54T8R
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MPI
EmissionsOBD1
SymptomsExcessive Emissions
OccursAlways