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code 44 lean exhaust
Posted to Technical Discussion Forum on 5/15/2008 10 Replies

Hello everyone.

I have a 93 Buick Roadmaster 5.7L TBI came in the shop with a code 44 exhaust oxygen lean. the SES light only comes under light load at 55 mph on highway. I have checked everything that I could think of and they all good, i finally ran out of... Login to read more.

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car Vehicle Data

1993 Buick Roadmaster 5.7L

Engine5.7 L
Trans4-speed Automatic

car Vehicle Data

1993 Buick Roadmaster 5.7L

Engine5.7 L
Trans4-speed Automatic