Question about 2005 Pontiac Grand Prix

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My 2005 pontiac grand prix over heated today, i immediatly put in a new thermostat, flushed the radiator and refilled it with 50/50. when i took it for a drive it was fine, tonight i checked fluids and all was well. i drove 3 blocks down the road and overheated, i went and got yet another thermo. installed it, refilled the fluids and when i started it back up and the waterpump is pumping water. when your looking at the water pump, there is a hose? its at a 90 degree angle somwhere between the water pump,and that hose water is spraying onto the top of my water pump. i cant see anything because its 10 pm and you can only see the the water while engine is running? help me fix my famlys car

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Sounds like either the hose isn't attached to the thermostat housing properly, the hose has a split in it at the connection, or the gasket isn't properly installed for the thermostat housing.

Posted on Aug 31, 2010

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Good Evening. I'm sorry to hear about your dilema, however it is a common part to replace on all the grand prix, impalas, monte carlo's, buicks etc. I'm generally assuming it is a 3.8l engine because the 3.1 and 3.4 do not have a 90degree elbow, just a hose. A hose would be so much easier to replace than the elbows yes plural there are 2 and they are replaced in pairs. A hose has 2 clamps and is a molded rubber hose and takes 2-5mins. The elbows are readily available at most parts stores and take a little more to do. First you need light, second you need to disconnect the battery and look at the aluminum bracket that holds on your alternator because it has to come off. And the power steering pump is held in by 2 bolts 13mm accessible through the pulley that has to come off too. So take off the belt and the power steering pump. Then remove the bolts for the alternator bracket, it will have to come out to the passenger side. Do not worry the old elbows will break and you might want to get a 90degree pick to pull the remains out of the bracket and the intake. You can do this it is like a puzzle and now you have the general knowledge on how to go about it. I hope this helps, and if you have any more questions please feel free to ask.
Thanks,
Joey

Posted on Aug 31, 2010

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