my 95 grand am is going through antifreeze like crazy but no leak what could it be

25

Asked by Nov 09, 2007 at 10:09 AM about the 1995 Pontiac Grand Am 4 Dr SE Sedan

Question type: Maintenance & Repair

I do not know if this is a blown head gasket just had fuel pump replaced plus oil change now my car is going through antifreeze every day.

2 Answers

first check oil if white milkey looking blown head gasket.if clean oil, you could have a head gasket blown on exhaust side see if tou see excess steam comming ouy of tailpipe if not check all hoses,may want to change thermostat refill with water see what happends also check water pump.

40,915

Yes, do all of those things, have a pressure test done on the cooling system to see if the leaking is internal. It could be an intake manifold gasket as well, I believe the '90s Grand Ams were known for head/intake manifold gasket leaks. Also you might want to check for pinhole leaks at the bottom of the radiator -- had a car once that emptied the coolant reserve EVERY MORNING, later found out a small pinhole leak was allowing it to drip out the bottom of the radiator, pool on a frame rail, and of course blow off while driving so you never saw a puddle.

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