Question about 2004 Lincoln LS

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My lincoln ls 2004 v6 is overheating

Ok i had a small leak where the bleeder is, by the thermostat. but the car never overheated unless i forgot to add coolant. that happen like monthly. i decided to get the part and replace it myself. when i change it i ran the car and it overheated on my quick. i taught my thersmostat went bad and i replace it too. but nothing. i google and found out about the system having air . so i google how to bleed it but nothing. i have to run it with the heater on for it not to overheat, but when i run it for a while and the niddle goes up, i pull to the side with out turning off the car, open the hood and bleed it from the heather bleeder and the niddle goes down to the middle real quick. can somebody help and give me any ideas in what to look for

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You definitely have air in the cooling system. The only way to purge the air is letting it run and cracking the bleeder several times. It must be completely full of coolant and at normal operating temperatures when you bleed it. You have to be patient and can sometimes take cracking the bleeder 4 or 5 times to get all the air out. In our shop, we normally let vehicles run for 30-45 minutes minimum to ensure we have all the air bled out. One quick note, those engines DO NOT like to be run hot and are very unforgiving when they do. Beware of cracked heads or blown head gaskets.

Posted on Dec 12, 2012

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  • poncenash
    poncenash Dec 12, 2012

    i try bleeding it a several times. i bleed it from the bleeder by the thermostat then from the heater bleeder. with the heather full. it pours coolant for a min then i close it let it run. do it all over but when i turn the heater off it overheat again as soon as i turn the heater on it drops. does it matters what kind of coolant i us

  • Bryan Webster Dec 12, 2012

    It should not matter what coolant you use. There should only be a bleeder by the thermostat and not by the heater core. The bleeder should be at the highest point in the cooling system or it will not get all the air out. It is a very slow procedure and can be very aggravating. It sounds like you may have a leak somewhere that is allowing air into the system. May need to have the system pressure checked by a reputable shop.

  • don-ohio Dec 16, 2013

    You may also have a weak water pump which will deter proper bleeding.don-ohio

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