IDNTH8T
New Member
- Joined
- October 27, 2005
- Messages
- 4
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- City, State
- SINTON
- Year, Model & Trim Level
- 99 XLS 4DR
hey every 1 newbe here trying to figure out whats wrong with my 99 xls 4.0 ohv 2wd. The first time my chk engine light came on I got the code P0171 i then checked the code & it said bank1 fuel trim (running lean, oxygen sensor defect, fuel injector, misfire or vacuum leak, MAS. I changed the oxygen sensors replaced the plugs & wires & noticed the plug on the cylinder closest to the firewall left side if your facing the front of vehicle is running lean all other cylinders look good. plse if anyone can help it would be greatly appreciated. thks :roll: