What sorts of symptoms would I expect with a faulty water pump? The car appears to be just fine, and only recently started overheating with the hotter summer weather and only when climbing the hill.

In otherwords, would I see a heating problem with regular driving?

Thanks for your suggestion. I will be getting a new cap this morning on the way to the clinic.

Brad.

__________________
Dr. Brad

2003 C320 4Matic Station Wagon
2002 C240 Elegance
1982 380 SEL Star Certified