1998 Buick Regal LS 3.8L Excessive Emissions

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Posted to GM Driveability on 1/1/2003 13 Replies

Gents:

Got this 98 Regal SC 3800 that failed NOx. Adding fuel pressure doesnt help as ECM adj LT/ST fuel trims to remove the fuel. Cleaning FI and chambers didnt help. Vacuum returns to starting vacuum at 2800rpm (any higher and rev limiter kicks in) MAF 4.6G...

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Vehicle Data

1998 Buick Regal LS

VIN	1G4KXXXXKX
Engine	3.8 L / 6 cyl / GAS
Trans	4-speed Automatic (Electronic)
Delivery	FI / SC SEFI
Emissions	OBD-II Compliant
Symptoms	Excessive Emissions
Occurs	Always

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Vehicle Data

1998 Buick Regal LS

VIN	1G4KXXXXKX
Engine	3.8 L / 6 cyl / GAS
Trans	4-speed Automatic (Electronic)
Delivery	FI / SC SEFI
Emissions	OBD-II Compliant
Symptoms	Excessive Emissions
Occurs	Always

13 Replies Received (View Replies)

13 Replies Received (Hide Replies)

Related Documents & Media 1998 Buick Regal LS

Related Documents & Media 1998 Buick Regal LS

Vehicle Data

1998 Buick Regal LS

Vehicle Data

1998 Buick Regal LS