I don't know the answer to this one!!! I suggest you go to Just answer.com !! These guys are online ase certified mechanics . I always use this site whenever i have a technical question and they have always helped me out and they have always been right!!! I costs $9.00 to answer your question but cheaper than paying a mechanic!!! After reading your answers on yedda , i looks like all you are getting a bunch of idiots. I hope this helps you!!!!!!