Bad Belt - Obvious "Squealing" noise from under hood, especially if cold, may still occur when warm. Might as well look at the belt, check for cracks. Belts will stretch, even new ones and have to be tightened every once in a while. Easy to do, actually.
Bad Water Pump - There is a small "weep Hole" underneath in the "nose" of the pump between the engine and the fan. When water pump goes bad, coolant will leak out of this hole indicating worn bearing and/or bearing seal. Replace if water leaking from there. And again, not too hard to do for shadetree mechanic, don't even have to pull radiator on straight 6.
Tighten the belt and see if this cures the problem, replace belt if it looks like it has lots of cracks going across, no sense in getting unexpectedly hammered by an avoidable problem in the middle of winter. This is a shadetree-capable item, too!
Friday, December 19th, 2008 AT 3:56 PM