I am having a weird problem in my 530ia. Ther car seems to slighty "overheat" when I go in reverse or let it sit and idle after driving it. When I say overheat, it doesn't go to the red, it goes anywhere from the middle (where it always stays) to a tad before the 3/4's mark. As soon as I start driving again, the needle quickly goes back to the regular temperature mark. It doesn't do this while at stoplights though. It doesn't happen all the time, maybe about 2-3 times a week. The problem only started about one week ago. The thermostat was replaced by the PO back in July of 04 at the dealer and I just had the water pump replaced 1 month ago. Also, corect me if I'm wrong, but the fan shroud is the plastic housing that surrounds the fan its blades correct? If a piece of it is broken, (about 3 x 2 inches) should I replace it? Thanks you for your comments.
-Andrew