over heating 99 grand am quad 4

Asked by Feb 13, 2015 at 10:50 AM about the 1999 Pontiac Grand Am 2 Dr SE1 Coupe

Question type: Maintenance & Repair

not gettting water flow thru system. radiator is new had new pump, thermostat. have manually flushed system with garden house. can find no blockages. heater hoses and core are hot but radiator stays cold. pulled vent tubes to surge tank with engine running and no coolent flows. hoses are clean a clear. even pulled outlet hose off eng with eng running and raised eng rpm to above 3000 water just trickled out.

6 Answers

105

Has to be a bad therm.

2 out of 2 people think this is helpful.
17,770

Did the engine overheat? Is this why you put new radiator, pump and thermostat in? I hate to say it but you probably have a blown head gasket (cracked head/block). VERY, VERY common on this engine. Pull the oil dipstick and hope and pray it's not over full and foamy. Your new water pump could be junk out of the box as well. For your sake I'll keep my fingers crossed on a bad water pump.

1 out of 1 people think this is helpful.

Sorry so long to get back, found te problem. Some other shop had put a thermostat in a place where a therm doesn't go, what a huge pain! Took that one out and replaced the thermostat in the correct place and she's doing fine now, thanks again

17,770

A thermostat in the wrong place? That's a new one. Remind me never to take anything to that shop, LOL. Glad you got it straightened out.

1 out of 1 people think this is helpful.
148,375

Where the heck else could it go?

1 out of 1 people think this is helpful.
17,770

LOL, I have no idea!

1 out of 1 people think this is helpful.

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