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1989 Pontiac Bonneville LE 3.8L MIL Lamp on, Lean Exhaust
Posted to GM Driveability on 9/23/2003 19 Replies

Car came in with SES light on. Used MT 2500, found codes 13, 44. Replaced O2 Sensor, fuel filter (plugged)& new ECU. Runs good, but the longer you drive, the leaner it gets. Will eventually set off a 44 (Lean Exhaust)and turn SES light on. When I let it sit 10...

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  Related Documents & Media  1989 Pontiac Bonneville LE

 
Message Closed w/Summary

car Vehicle Data

1989 Pontiac Bonneville LE

VIN 1G2HX54C7K
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / EFI
EmissionsUS Fed
SymptomsMIL Lamp on, Lean Exhaust
OccursAlways
Misc.4 Dr, Auto

Trouble Codes

13O2 Sensor
44Lean Exhaust
Message Closed w/Summary

car Vehicle Data

1989 Pontiac Bonneville LE

VIN 1G2HX54C7K
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / EFI
EmissionsUS Fed
SymptomsMIL Lamp on, Lean Exhaust
OccursAlways
Misc.4 Dr, Auto

Trouble Codes

13O2 Sensor
44Lean Exhaust