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1997 Buick Regal LS 3.8L Excessive Emissions
Posted to GM Driveability on 10/29/2007 13 Replies

No vacuum leaks found. pcv and o-rings ok. o2 lazy, replaced, 02 went down and nox went up. egr position sensor actual was a little off so I replaced the egr and passages appear to be clear. This dropped nox from 710/697. When I add propane to front of maf eng...

13 Replies Received (View Replies)

  Related Documents & Media  1997 Buick Regal LS

 
Message Closed w/FIX

car Vehicle Data

1997 Buick Regal LS

VIN 2G4WB52K9T
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / FI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1997 Buick Regal LS

VIN 2G4WB52K9T
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / FI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways