Pontiac Grand Prix GTP
Report: Intake Manifold Gaskets May Leak Coolant or Engine Oil
Pontiac Grand Prix GTP Problem
Average Mileage: 111,625 mi (47,000 mi - 160,000 mi)
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
Visitor, 2004 Pontiac Grand Prix GTP, 83,000 mi
engine leaking coolant and oil from intake manifold, car slightly runs hot in traffic and idling. changed thermostat, changed radiator cap,bled air out of cooling system,going to replace intake upper and bottom gaskets,this should stop leak, hope it solves heating issue.
Visitor, 2000 Pontiac Grand Prix GTP, 130,000 mi
CONSTANTLY ADDING COOLANT
Visitor, 1999 Pontiac Grand Prix GTP, 126,000 mi
Intake Manifold Gasket is also leaking. Estimate for replacement - $840.
Visitor, 2004 Pontiac Grand Prix GTP
These engines generally do not blow the head gaskets. White smoke came out. I thought it was a blown head gasket, but the car only has 62,000 miles on it. It was the plastic lower intake manifold gasket. This one is the supercharged model. Get the metal gasket, do use the plastic ones as you will have the same problem later. Merle Gebers
Visitor, 2001 Pontiac Grand Prix GTP, 160,000 mi
Car running hot
Visitor, 2002 Pontiac Grand Prix GTP, 117,000 mi
Low coolant light on. Leaking antifreeze onto garage floor. Replace intake manifold gaskets, upper and lower, thermostat, oil change. Cost $1,000.
Visitor, 2004 Pontiac Grand Prix GTP, 80,000 mi
Losing coolant and oil, problems starting and a rough idle.
Visitor, 2004 Pontiac Grand Prix GTP, 47,000 mi
oil and coolant leaks, external,