Question about 2005 Pontiac Grand Prix

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Still no heat.....changed thermostat flushed radiator

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  • ranadahughes Feb 07, 2012

    Help it's cold outside

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Possible heater core problem.

Did you check to make sure when you set the heat on that the car climate control move the heat door to allow the heat to come in the vents??

Posted on Feb 07, 2012

  • ranadahughes Feb 07, 2012

    where r the heat doors

  • Steve Feb 07, 2012

    Under the dash ... Get one person to go under the dash and another to change the system from hot & cold and see if you can hear anything moving or see anything moving. A heat door stops/allows the heat to come in. You might not be able to see it easy every vehicle is different

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2001 VW Beetle 2.0 heater won t heat up


If you flushed the coolant with the thermostat in, chances are you didn't flush the coolant. Regardless, it's easiest to check the controls inside first. Does the blower fan work? Does the air flow change from floor to vent, to dash as it's supposed to? Does the A/C change temps when knob is turned from cold to hot? Post results.

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Replace the thermostat. I have had bad luck with aftermarket thermostats on this particular year of GM/ Chevy trucks.They tend to stick closed and then fully open, thus causing the temp to sort of surge hot and cold. A good thermostat will slowly open maintaning a good consistant temp. I would recommend spending a little more and getting a GM thermostat.


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I have a 2000 chryler concorde with no heat. I changed the thermostat.I 've checked the coolant. The blower is working but only cold air. Any solutions


if you have changed the thermostat. did you bleed air out of system, if air is trapped in system it will not heat right! drain radiator and flush it good, but when refilling turn heater on high heat. then bleed air out when refilling system. most all cars have a bleeder for air. if in doubt, call any auto parts store to find out where yours is. if air is in system you will see bubbles appear from bleeder. also when flushing engine, make sure you start vehicle so it circulates through engine as well as refilling system. if the upper radiator hose gets hot then check for heat from car if it is ok! close bleeder and make sure radiator is full. I think the biggest culprit is air trapped in system. before starting the flush, be sure its not caused by low coolant in radiator. have a good day!!

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Luke warm heat in a 2002 expediton


Start with Flushing out your cooling system. Flush it out with Preston Radiator flush, you have your preference of ether the super flush which takes 3-6 hours or the 10 min flush which is good if you don't have the time to flush out your cooling system.

After you have flushed out your cooling system, replace your thermostat and you should be good for another cold winter driving. What happens is that after a few years of the coolant not being serviced, the coolant crystallizes and clogs up the heater core and radiator causing poor circulation. Poor circulation will cause poor heat and or overheating issues to the engine.

Before you go through all that inspect to make sure you have the right amount of coolant in your cooling system.

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Nov 04, 2010 | 2000 Ford Expedition

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My car is running hot do u think i need to change the motor?


buy a radiator flush kit, some prestone flush additive, and even maybe a new thermostat, and a simple haynes manual for your auto. The manual will tell you where and how to change the thermostat, and how to drain the radiator, and how much radiator fluid you will need. The flush kit will instruct you where to put the flush fitting.
Remove the thermo, flush the motor, install new thermo and gasket. Add radiator fluid, done. This should solve your over heating probs. Don't let it over heat! You can cause major probs then.

You could always take it to a shop and pay the $200 to do it for you. My way would cost you less than $50.

please click yes if this helps. thanks

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How do i change the coolant/flush radiator in 2004 ford freestar


Open the petcock on the bottom of the radiator and allow the old coolant to drain.

Close the petcock.

To refill you will first fill the degas container to the cold fill range, leave the cap off the canister. Turn all of the heater controls to warm and turn fan to full. Idle the engine until the thermostat opens. Top off the coolant and put the cap back on. Idle at 3000 RPM for several seconds and then idle again for a minute or so. Check the level and then repeat this 4 times, or until heat is coming from the front and rear heat units.

If you want to flush the system you will have to remove the thermostat and hook up your flush system to the radiator hose at the thermostat housing. Follow the instructions on your flush system then put the thermostat back in. Follow the instructions above to refill.

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1 Answer

Car is still heating up after flushing the radiator, checking all hoses and changing the radiator cap, havent changed the thermostat but the symptoms dont seem like it would be the thermostat unless it is...


One good way to tell if the thermostat is the issue is to carefully touch the lower radiator hose when the engine over heats. If the lower hose is cool there is no circulation through the radiator and the thermostat is the problem.
Unless there there is an obstruction in the hose blocking coolant flow.
Has the lower radiator hose been changed recently? Make sure there is a spring in the hose to prevent it from collapsing and restricting coolant flow.
Regards,

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