Question about 2001 Pontiac Grand Am SE

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What causes my 2001 grand am gt1 to overheat - 2001 Pontiac Grand Am SE

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  • lamasbonita0 May 07, 2010

    at first when it started to overheat was when i was in a front end collision. But we figured out that it was the radiator leaking. after that problem was fixed the car ran great and it has been about seven months that this has happened. The car has 85,000 original miles on it and to tell you the truth i do not know when the last tune up was done but i am almost sure that it is due for one. I know a little something about cars so the first things that I checked for was a puddle under the car and there was not one the next thing that i looked for was to see if the radiator hoses were in good condition. and they all looked fine next while the car was started i checked all of the fluids and then I checked to see if the upper radiator hose that connects to the thermostat housing was hard which it was not and this lead me to be stumped on the darn problem of it overheating. Could it be my water pump has gone out.. Ohh I almost forgot to mention that the heater as well does not even get hot even when the car has been runnin for a while. does this sum it up for you or do you need a little more info?!!!!! please help and thank you

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Well, before a positive for sure answer can be given, a few questions need to be answered to aid in the diagnosis... 1.)when was your last tune up? 2.) When did your car first start over heating,(ie) did it happen all of a sudden or slowly over time (meaning days, months)? 3.)How many miles does your car have on it? 4.) Have you noticed a small or large puddle under your vehicle lately? 5.) have you had your fluids checked lately? 6.) have you had your smog equipment, 02 sensors, converter, exhaust, etc. checked at its regular interval? All of these questions are important and I probably forgot a few that any normal mechanic would ask but these are the ones that I could trust in to give you a good answer.

Posted on May 07, 2010

  • laura cortez
    laura cortez May 07, 2010

    Ok, I'm hoping that you recieved my previous response that I sent about 15 minutes ago. If not here's a quick brief, Check your fluid by smelling it, by looking at it and by the color of it. It shouldn't have a stong fishy smell, it shouldnt be any other color than either flourescent green or orange and the fluid should be clear, meaning see thru, not cloudy or rusty. Next start your car and let it warm up at idle and watch the gauge on the dash. At about 1/3 of the way up the gauge the T-stat should open up resulting in an idle decrease and the gauge should drop a few knotches. If that doesnt occur and the vehicle keeps rising on the gauge to past the 2/3 point, you have a faulty T-stat more than likely. But if your water pump is bad you will have kinda the same symptom due to lack of water flow even after the T-stat has opened. The only difference is the time it takes between overheating and normal temp. Your waterpump usually will let you know when it needs replacement by leaking thru a weep hole in which fluid will start weeping out and fluid having to be added more often than usual. Sooner than later, a pump is demanded replacement. But not always will your pump weep. Also, as your checking the T-stat, Notice to hear if your

    coolant fan is kicking on. You could just have a blown fuse in your fuse panel causing your fan not to work its job. Also since you mention the front end fender bender, make sure that all your air dynamics have been replaced and are complete with no cracks or pieces missing. One little piece means the world to your car cause thats how it takes in air and if it cant breath... it will run bad. Please feel free to reply at any time . I am on call 24 hours and dont mind helping out.

  • laura cortez
    laura cortez May 09, 2010

    also you heater core valve could be not working and is stuck in the off position which in turn would not let your heater warm up.

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