HELP! Fast and excessive heating > 225. Thermostat & hose replaced (top hose was split but themostat didn't appear that bad)....no detectible leaks now. heATER THrOWS HEAT ok AND WATER IN RADIATOR HEATS QUICKLY....so it seems like water is circulating through the engine. While driving, temp gets to > 225 quickly and varies several degrees for no apparent reason. After driving a while the preignition begins (engine rattling) and engine dies. I can't see where or if water is getting into the oil (bad head gasket?)..it seems ok but need positive check. What else could cause this? thanks RT
overheat problem on 2004 Buick Park Avenue
by ront76133 in Fort Worth, TX on August 04, 2010
ANSWER by sts_rider on August 05, 2010
Could be the water pump but head gaskets will definitely do that as well and water don't always have to mix with the oil to have a bad head gasket do a compression test that'll tell it all.
The water pump may develop a coolant leak resulting in an engine overheating condition.
I don't drive far, only 1.5 miles to/from work. I don't want to repair the head gasket because of the cost and I intend to buy a new car by the new year. If the coolant is kept filled it doesn't ...
I have to fill it with water before I drive it anywhere because the radiator leaks antifreeze when I turn it off after I drive it. It also over heats if I drive it to far, especially if it's on a h...