BobsYourUncle wrote:
Don't overlook something as simple as plugged cooling fins on your rad. There is usually 2 or 3 things out front, the rad being the innermost. Your A/C condenser will be in front of the rad, and then a tranny oil cooler if you have one.
Are you cleaning a lot of bugs off your windshield over the past couple years? If so, those same bugs could be plugging things up through the grille, restricting air flow.
Take a peek through the front to see if there is a lot of schmoo in there.
I use a pressure washer to remove bugs and junk from the radiator and oil cooler/trans cooler.
Also, do you have your AC on when climbing hills? It makes a big difference.
Water pumps tell on themselves when they need changing by the drip drip, however they still function. If it is not leaking I would pass that by.