Well somtimes when driving my car more often then other i will get a check engine light for the o2 and the battery temp. Then it runs like butt. But after a bit it will turn back off and seem to run better. Whats up with that? Wire harness? It seems to do it more when it rains.

 

battery temp?

 

did you move your battery to the trunk...aslo if you do move your battery to the trunk what do you do with that battery temp sensor?

 

But why would they only go both on at the same time. And why does the car run like butt when it does go on? The battery has been in the trunk for years and i never got a check engine for it.