hiya im new to the forum i have a problem with the temp gauge it wont go past 0 its been hapening for a few months but every so often it would start working then drop again also some times itl drop past o and the cardrops power but returns to normal when i pull over and turn it off then start up again??? also the mpg is crap im thinking it may be a dodgy temp sensor but were is it and how do i remove and refit it??