Question about 2003 Chevrolet Monte Carlo

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2003 monte carlo w/ 125,000. Running hot - shuts off car. Leak detected near serpentine belt. Garage doing work propose changing thermostat and hose wants ~ $ 500 to $ 600 w/ stat. I told garage that eng will shutt off when car runs hot. Garage said no - there's a possibility of eng damage ?? Need to fix cooling b4 they can tell. I Think $ 500+ is pricey and do not think eng can be damaged? Please advise thoughts on price and their reccomodations. Want to sell car down the road and do not want extra repair costs...

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  • flyersz Jul 06, 2010

    2003 monte carlo w/ 125,000. Running hot - shuts off car. A Leak was detected near serpentine belt. Garage doing work propose changing thermostat and hose(s)- lokking at ~ $ 500 to $ 600 w/ stat repl. I told garage that eng will shut off when car runs hot. Garage said no - there's a possibility of eng damage ?? Need to fix cooling b4 they can tell. I Think $ 500+ is pricey and do not think eng can be damaged? Please advise thoughts on price and their reccomodations. Want to sell car down the road and do not want extra repair costs...BUT car is not driveable and may need to be towed to get 2nd opinion.

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  • flyersz Jul 06, 2010

    Looking for 1 more opinion before I decide:
    Jul 06, 2010 - 2003 monte carlo w/ 125,000. Running hot - shuts off car. A Leak was detected near serpentine belt. Garage doing work propose changing thermostat and hose(s)- lokking at ~ $ 500 to $ 600 w/ stat repl. I told garage that eng will shut off when car runs hot. Garage said no - there's a possibility of eng damage ?? Need to fix cooling b4 they can tell. I Think $ 500+ is pricey and do not think eng can be damaged? Please advise thoughts on price and their reccomodations. Want to sell car down the road and do not want extra repair costs...BUT car is not driveable and may need to be towed to get 2nd opinion.

  • flyersz Jul 06, 2010

    thanks to all for you feedback !

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God, that is expensive, worst than here in the Uk!!! This would cost 1/5 of the price here if you go to a side garage...Anyway, the garage is right, overheating can cause head gasket damage and trust me, you won't be able to even sell the car after that..By what you have explained and the engine is cutting off, there is a high possibility that the head gasket is already damage, could be a minor one though.Best thing is to work out the cost of fixing it, include head gasket repairs etc, ask the garage this question : "Say if we fix the head gasket and then we find that the head gasket is damage, how ,much more for that? " Then you will probably understand my point here. Hope this helps.That thermostat and hose is 2 hours or less of work.

Posted on Jul 06, 2010

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Well the cost does seem high but if they have already done work to find the leak etc...then that problably has added to the cost. Also if you let the car overheat to the point where it shut off there could definitely be engine damage done. If all they are changing is a thermostat and one hose you may want to consider getting quotes from other garages for doing the job.
Thank you,
Lee

Posted on Jul 06, 2010

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Hello! There is a common fault on the 3.4L engine...Is this the engine in your vehicle? If so, It is a defective lower intake manifold gasket...A very expensive "shop" fix...Also the Engine Coolant Temperature (ECT) sensor may be defective...Located at the end of the fuel rail...right side of engine...Wire colors are...Orange/Black and Yellow...A bad ECT will cause overheating and engine stall...cost #15...

Since you can see the leak...I would suggest buying a repair manual for your vehicle $15-20 and attempt the repair yourself...Selling the car ASAP because it will happen again...Guru.........saailer

Posted on Jul 06, 2010

  • David Burbee
    David Burbee Jul 06, 2010

    Hello! I originally sent an answer to your question but I now see it really wasn't what you were after...Allow me to answer more accurately... Changing a thermostat and hoses and charging that much money is out of line...The most common reason for overheating is the thermostat...Why the mechanic wanted to change the hoses is unclear...To change the thermostat is a rather easy job...

    The leak that you see could be a blown lower intake gasket...Your vehicle is noted for this failure...
    But first, change the thermostat...Re-fill system and see what you then have...

    In reference to the engine not running when it over heats...The Engine Coolant Temperature (ECT) sensor sends signals to the PCM (brain) controlling fuel delivery and spark timing...When over heating occurs, The engine will run rough and stall...The ECT sensor itself may be faulty due to high temperatures..It can be tested...

    Send a comment and tell me if this answers your question...If it does; Would you be so kind as to re-rate my solution.......................Saailer




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