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Anonymous
Anonymous asked in Cars & TransportationMaintenance & Repairs · 1 decade ago

Car getting hot and leaking antifreeze. HELP!! Nobody can figure this out!!!?

OK so I have a 99 Grand AM GT. A month ago the car ran hot so i took it in and they fixed the intake gaskets. Car still running hot!! Took it back and they fixed the head gaskets. Car still not fixed!! $2200.00 later they put in a used engine with half the mileage. Still running hot and still losing anitfreeze. New waterpump installed also. Can anybody help?

Update:

Thermostat replaced and this is the dealership. The reason they replaced the engine was that they said the heads were most likely cracked.

10 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    If you had cracked head you would get coolant in the oil (it would look like a chocolate milk shake on the oil dip stick), or coolant in the cylinders ( remove the spark plugs, pressurize the cooling system for a while and the crank the engine and coolant comes squirting out of the cylinder that is leaking). Sounds like they had their head up their, you get the point.

    A plugged radiator can cause overheating. A leaking radiator cap($10) can cause overheating. A water pump with a plastic impeller that is slipping can cause overheating. A cooling fan clutch that is not locking up to pull lots of air through the radiator can cause overheating (but usually only in stop-n-go traffic). At freeway speed there is usually enough ram air to cool the radiator. Cooling system problems can be tricky. If they put a used engine in the car and you are still having the same problem, you should get your money back for all the repairs that did not fix the problem. Sue them in small claims court and you are sure to win. Dealerships always loose because they should know better. You should also report them to the state bureau of auto repair(BAR) for charging you to fix the car that has not been fixed yet. I would threaten them with that and ask for your money back. I am totally serious. I am a 15yr dealership mechanic.

    Sometimes there are multiple things wrong like a cooling fan clutch is worn out(lost all the viscous fluid that makes is lock up) and a bad thermostat.

    Let me know if you have any other questions. You can email me (hondast1101@yahoo.com).

  • 1 decade ago

    you should never have replaced your engine. It is probably still good and never needed replacing it is only a 99 should have plenty of life left. Especially since your car is still running hot. Why would you take it to a place that couldn't solve the problem twice. You took it in a third time with the same people. Rule number one never replace an engine it is better to sell a car as is with a bad engine then the cost to replace it. Unless the transmission or engine is cover I would never pay for it to be replace out of my own pocket as it is ridiculously expensive and just not cost effective in most cases. What does changing the intake or head gasket have anything to do with the car running hot? Sounds like either the people you took it to were complete morons or they were plain out just ripping you off. Did they even tried to replace the thermostat? The thermstat is only like a $10 part. Also could be engine temp sensor or coolant temp sensor same thing in some cars depending on term usage. Could also be bad fan switch so the fans never turn on and that will definitely make a car run hot. Those are just some of the most common things that will make a car run hot. They should of been checked first because they are usually the culprit plus it is much cheaper to replace a sensor or thermostat than to replace a head gasket or replace the whole engine for god's sake.

  • 1 decade ago

    Change the temperature gage in your dash. Then get some bars stop leak "pellets" crush up 2 of them and put in your radiator let it idle for an hour or so, the pellets will continue to slow the leaks for several days or even weeks until eventually they stop provided the leaks are not too large. It works, also you may want to change the thermostat if you haven't already, and make sure you hear the the cooling fan kick on when the car warms up. Hope this helps.

  • MarJoe
    Lv 6
    1 decade ago

    You may need a new radiator cap or radiator it's self. If you can't see any anti freeze on the ground then it still may be leaking but so slow that it dissipates before it hits the ground. Take it to a radiator shop and have them do a pressure test and a block check. They will fined out where the problem is. Try the radiator cap first, that would be a cheap fix.

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  • 1 decade ago

    I'd have looked at the radiator, fan, thermostat and and radiator cap before I would have changed out an engine. The engine itself seldom causes overheating. It's usually something to do with the (external from the engine) cooling system. You really need to look for a different garage.

    Source(s): Been repairing and restoring cars for 50 years.
  • 1 decade ago

    check radiator for a calcium buildup. also is your electric fans kicking in at the right temperature possibly change pressure[rad cap] to a higher rating maybe if available a high flow water pump with a steel/cast impellar i have a freind with same problem

  • 1 decade ago

    Hi your radiator is stopped up or your coolings fans are not working. Check to see if the floor on the right front passenger is damp or your windshield fogs up when your defroster is turned on, if so your heater core is leaking

  • 5 years ago

    i can,t see your car but it could be several places so here are some of the places you can check out ! the radiator, radiator or heater hoses, a freeze plug on the engine, the thermostat gasket or the heater core leaking on the floor board !

  • Anonymous
    1 decade ago

    get rid of that car, they always have overheating problems, i know several people who had that car and it caught on fire

  • 1 decade ago

    try the herter.

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