Hi fellow tech, I have this 89 Buick Lesabre, I get a rich condition with the scanner. (code 45). We change oxygen sensor twice. Mv are reading 983 and not switching, it is staying [...] will only switch to about 430 mv when the engine is hot, once it get to o...

FIX posted 11/14/2003

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle