Grand Prix

Engine Overheating Due to Water Pump Leak on Pontiac Grand Prix

Problem Description and Possible Solution

The water pump may develop a coolant leak resulting in an engine overheating condition.


Problem Data
RepairPal Verified
Average mileage: 117,197 (50,000–155,000)
Engines affected: 3.1L V6, 3.8L V6
17 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007
38 people reported this problem
Viewing 1 - 8 of 8 comments
car overheated, radiator flushed,now I need a head gasket repair
Replacement of water pump was imminent
on second water pump in 4 years told needed to put a higher quality of one in first one spun bearing in the pump and second one is having steady leak from behind mounting flange throwing coolant all over as u drive $100.00 difference in price for a standard water pump to name brand not counting labor i save here by doing myself vs waiting on a shop and paying hidden fees good luck wont be buying another pontiac anytime soon right at 130,000 miles
My water pump has gone bad twice. Once around 100k miles and again at 140k
Coolant leaking out under car.
3rd water pump..changed housing to timing chain and replaced timing chain as well.Replaced upper and lower radiator hoses, flushed system, new motor oil and short whole cooling system done..2 1/2 months later..same problem..losing coolant, possibly water pump again..this car is costing me way too much!
Water pump seized up over heated and wrecked my serpentine belt. Currently not fixed.
Water pump is a major issue,have had it replaced 3 times,and now i parked it,water pump leaking again,tired of this car!