over heating

[ldanley]

My grand AM is over heating. It seems the fan is not running. I took it to a service center and they change the fan, but it is still not running. The thermostat and the Temperature sensor has been change. It starts to run hot with only a little bit of water drained from the engine from continuous over heating (just a little over the first mark on the temperature gauge). I think it could be the switch but I do not know where it is located. Even at high speeds the temperature stays a little over the first mark. The faster I go (75-80) the more it starts to over heat instead of being cooled by the wind.

[jerzeygrl]

water pump?

[ldanley]

Wouldn't water be leaking from the water pump if it was bad?

[achievasc92]

drain you coolant and run a bottle of coolant flush throught the systrem. Sounds like either your coolant is old or you have a blockage somewhere.....or both

[grnpontgagt]

Does your fan run now? When I had the fan replaced they

1. did not replace the relay for the fan (so it cont. not to work)
2. put the fan in backwards- it was actually pulling hot air over my engine instead of cooling it.

I don't know much about cars, but I hope that info. might help.

[lefty13lefty]

It could very well be a cracked head or a head gasket. i have a 1994 grand am that overheated and it never leaked any coolant. the crack just allowed it to leak through the water jacket. i recommend that you pull the head and have it pressure checked, i doubt its the water pump they have a steel impeller and dont have a history for going bad, it also might be blockage, but i would highly recommend having the head pressure checked.......GOOD LUCK

[richtazz]

either your radiator is blocked, or you have a bad t-stat. IF it was teh fans not kicking on, it would cool off as you drove. The water pump would leak or make noise if it was bad, so change the t-stat, and if it's a v-6, make sure to bleed the air out of the cooling system when you're done. If it still overheats, you have a blocked radiator.