Thank's John, but what about the car losing power after it has been warmed up (#3 in my original post)? Is there a certain reason for that? And I forgot to add, last weekend I didn't turn on the car for 3 days and when I turned it on Monday the engine was making very loud noticeable clattering/chattering noises, almost as if it sounded like it needed oil, although it went away after I drove around for awhile. I just recently did the oil change(this month, 4 quarts) so I know it's not a lack of oil. What's your opinion on that? And where do you believe is a good shop/retailer that I can get a good oil pressure gauge installed? Thanks for your help.


EDIT: IAT plug? Where is that located? Thanks.