Question about 2000 Pontiac Grand Am GT

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Engine overheating i changed water pump and thermostat. not sure how to bleed air from system

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The best way to flush it would be to take off the bottom radiator hose and pump water through the fill nozzle after all the coolent is out you can then hook the hose back up and replace it with new coolant.

Posted on Feb 01, 2009

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Cool the radiator down by running cool water over it, while the engine is running. Slowly remove the radiator cap to the first notch to bleed off any pressure, while keeping cool water flowing over the radiator.

Once pressure has bleed off, remove cap, add coolant as needed.

Replace cap. Check overflow level in overflow tank.

If you got the engine hot AFTER replacing the thermostat, go get another thermostat and replace again. Once a stat get's overheated, they don't like to work right again.

Then, make sure the radiator is clean and clear of sludge. If you have sludge, your going to chasing this for awhile.

Posted on Feb 01, 2009

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Posted on Jan 02, 2017

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2002 toyota sienna I just replaced my water pump and thermostat and check engine light came on so hooked up scanner and is telling me problem is thermostat. What should i do?


Change your thermostat, flush your cooling system while your at it, make sure you bleed the air out of the system when you refill.

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Changed a radiator today, drained system. Hot water will not heat now. Heating and radiators are working ok


Helen, if it is the radiator in your car that was changed, you may have air in the cooling system that needs bled out. May also be a failing water pump, thermostat,etc.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How To Bleed Cooling System EricTheCarGuy
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Mazda 626 is overheating. changed the thermostat twice in 10 weeks Both fans are working;increase temp when Accelerating.tried to bleed air from the system but this model doesn't have a bleed valve.


is coolant circulating in motor/radiator? does radiator top hose get hot when engine has been warmed up? might be water pump, not thermostat. and you do have plenty of antifreeze/coolant in radiator I'm sure.

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Engine overheated , got second hand engine but still overheating after new Radiator and thermostat. What could be the problem


-Remove the thermostat and flush the engine back and forward couple time with water. Then re install the thermostat back to. Make sure the thermostat's spring or bottom go inside the engine.
-Make sure the water pump is in good shape, belt drive the water pump must be good tight.
-Try this you should be good to go.

Good luck

Mai Lor

Nov 04, 2014 | Cars & Trucks

2 Answers

2000 chevy corvette changed water pump and therm bubbling through rad cap


there should be no air in the cooling system and the system can be bled by using a pressurising equipment . Ensure that the thermostat is placed in the motor the right way with the body facing the hot water (head or block). Air defeats the purpose of having a pressurised cap and system.

Jan 01, 2014 | 1998 Dodge Ram 3500 2WD

2 Answers

Overheating


Well one hot and one cool hose means the coolant is not flowing thru the radiator. That could be from a defective pump, closed thermostat, air in the system, or a blockage in the radiator. You might try running the engine with the thermostat out to check flow.

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3 Answers

Engine overheating i have replaced the radiator has plenty of water


replace thermostat.then bleed coolant system, this is how you do it.fill the cooling coolant system with 50 / 50 dexcool and water to raise boiling point,straight water will evaporate boil away cause engine to overheat catch fire thats why you need 50 / 50 mixture antifreeze and water.to bleed coolant system first fill coolant system until coolant stay at the full cold mark on the the coolant overflow jug,then you start engine allow it to idle,place the heater and ac control in any ac setting except max and the temperature control to the highest setting,run engine until lower hose to water pump is hot. with the engine hot run the engine speed up to 3000 rpm and allow it return to idle, repeat this 5 times. slowly open the bleed valve on the thermostat housing or look for bleed valve at the water pump heater hose.open bleed valve for 15 seconds to expel any trapped air.then top off the coolant as necessary,and when top radiator hose hot thermostat open up.keep adding cooling to overflow until coolant level stop at full cold mark dont over fill coolant.if engine seem like overheating while looking at cooling gauge turn off engine wait a while until cool off add more coolant until coolant level stay stable and dont drop any.when open radiator overflow cap use large rag over the radiator cap to keep from getting scald open radiator cap a little at a time but dont open radiator cap until engine cool down first.replace the radiator overflow cap, thermostat,and engine coolant temperature sensor and check the cooling fans fuses and relays see what happens.

Aug 18, 2012 | 1998 Oldsmobile Intrigue

2 Answers

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See if when you remove the radiator cap when its cold it pushes antifreeze out if so you a head or head gasket problem you can also do this with putting a pressure gauge on the radiator and pumping it up to the recommended pressure usually says it on the cap and see if the pressure bleeds off. best of luck to ya

Aug 11, 2012 | 1997 Dodge Intrepid

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