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1990 Oldsmobile 98 Regency Brougham 3.8L Excessive Emissions
Posted to GM Driveability on 5/6/2005 6 Replies

Do'es not pass Em test. our local test is bar 90, 2500 rpm and [...] that ecu is going into open loop at off Idle, over 800rpm and will cycle every 12-15 seconds open/closed, Temp won't matter 180 to 210 deg F. During closed loop o2 is normal lean/rich Switchi...

6 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1990 Oldsmobile 98 Regency Brougham

VIN 1G3CW54C6L
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PFI
EmissionsFED
SymptomsExcessive Emissions
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1990 Oldsmobile 98 Regency Brougham

VIN 1G3CW54C6L
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / PFI
EmissionsFED
SymptomsExcessive Emissions
OccursHot, Idle