In the Placerville/Shingle Springs area, if you don't want to take your car all the way to Ernie in Orangevale, Rob at Foothill Auto Service, 3381-B Durock Rd., Cameron Park is quite good. (530) 672-2209. They have fixed my 420SEL when it was really messed up. They figured out everything that was wrong with it and got it running well, and they have a good bedside manner.