Idles rough at start, but runs fine once she comes up to temp. Engine light is on, and throwing out codes P0171, P0174, P0300, P0302 PO305, then P0133 and P0153. Bank 1 Sensor 1 was replaced a year or so ago. Do we need to change all 02 sensors, or is there something else we need to look at? Many Thanks

 

YES - advice from members with the same model.

I've moved your question from General Tech Help to X-Type forum.

Graham

 

many thanks

 

Check the "big 3" for vacuum leaks. SEARCH here for the 171 & 174 codes for guidance.





Also with the P0300 (generic misfire code) P0302 (cylinder 2) & P0305 (cylinder 5) if the big 3 are not a leak problem, you probably have an intake gasket leak.

 

Many thanks.... Still not quite understanding why the rough idle during a cold start, then seems to run fine. We have sensors on hand, and we are in the process of changing them out. Went ahead and changed the battery since it was out and 3+ years old. Here's hoping. Again, thank you. M

 

Expansion of the motor (getting hot) metal parts sealing the air leak...