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1990 Volvo 760 GLE 2.8L Excessive Emissions
Posted to European Driveability on 3/19/2000

Question is - why does o2 drop to .029(super lean) and why does the convertor nor get hot? Is the system stuck in open loop and if so why does the other car work as you would expect? Could it be the coolant temp sensor?

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car Vehicle Data

1990 Volvo 760 GLE

VIN YV1GA6940L
Engine2.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / lh jetronic
Emissionsus fed
SymptomsExcessive Emissions
OccursUnder Load, Idle
Message Closed

car Vehicle Data

1990 Volvo 760 GLE

VIN YV1GA6940L
Engine2.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / lh jetronic
Emissionsus fed
SymptomsExcessive Emissions
OccursUnder Load, Idle