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Keeps over heating, we have changed thermostat, water pump,reserve resivoure tank and cap,both censors,all hoses,and had the radiator checked and flushed.it still leakes water from somewhere we cant see because we have to keep filling it up. now it's starting to miss out really bad,and doesnt want to start can you please help me figure out the problem.
Pull the spark plugs and look down into the cylinders with a small bright flashlight, if the top of any piston is nice and clean and shiny and the others are not, you have a head gasket leak on that cylinder, it will be very obvious it will look like a brand new piston and the others will have carbon built up and deposits otherwise is your fan operating at all? do you have any heat from the heater? after the car is fully warmed up does the lower radiator hose get hot? please look into these things and get back to me i have seen on these cars many times the fan control circuit fails and the fans do not come on. You can run a ground wire to the fan relay under the hood and put a switch in the car to manually run the fans when it gets hot, i can explain how to do this if your fans are not operating please rate -jeff
Head gasket needs replacing. check your coolant reservoir while the engine is running, if coolant spurts out or bubbles out then your headgasket blown or your engine head may be warped.
I agree with all of the above on the problem the easiest symptom of a blown head gasket is a distinctive white exhaust from the car that smells like burning antifreeze and as the head gasket leaks more the more of this white smoke you will get and that would explain the missing of the engine the water is dilluting the gas mixture causing the cylinder to missfire. Hope this helps.
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John sounds like your sensor may be bad. Next it could be your thermostat sticking use a temp gun and measure the temp of your radiator at the cap. Do not remove cap. Just take temp. If it is getting hot it should spit water out. Check to see if the electric fan is coming on the sensor to cut the fan on maybe bad or the fan. Hope this helps.
The whistling noise is steam. The problem is you never attacked the source of the problem. What you need to do now is drain your radiator completely at opening T-spicket at the bottom of the radiator. While you drain with engine off, run your water hose on top, to flush out the radiator. Then run to the Auto store and buy "radiator flush" -- follow directions. After flushing out the radiator flush, close the T-spicket, and fill with NEW anti-freeze. By enough to fill to the very top. Mix the anti-freeze with water per instructions to your environmental weather.
Buy a new radiator cap which could have caused the problem in the first place by not allowing the correct pressure to blow off. Being a 2000 car is a little early for radiator problems, but an incorrect anti-freeze solution causes radiators to fail prematurely.. Better to have more than less because anti-freeze keeps the radiator from corroding.
Your radiator never cooled the water sufficiently, and boiled much of the water out, hence it got so hot that it would melt the water tank. The Thermostat could well have been the cause because it got corroded from the inept ant-freeze mixture. Did you find rust on the Thermostat ? If so it was the case. If not the radiator has lost cooling either by low water or the cores have become plugged up, in that case you will need a new radiator. See if the flush loosens the rust within the cores before buying an expensive radiator. Check the water hoses if leaking cooling. Run the car allow the engine to become hot before accepting that your water hoses are fine. Because heat expand everything, and may not leak until after the expansion.
thermostat in backwards.the part that senses temperature change isn't exposed to the hot coolant inside the engine. , or coolent passages clogged, here is what sometimes will happen:
They can and will totally clog up, try to flush the system if not too far clogged.
Could be a Bad radiator Cap? Low Water?
Clogged radiator? Not enough air flow, Do To.... Dirty radiator fins?
Bad Fan Clutch or Electric fan not running? Timing Off? Stuck closed
Thermostat? Bad Water Pump? Blown head Gasket(s)? Cracked Cylinder
Head(s), ECT....
Overheating can be numerous things: Fans not working, water pump, thermostat, overflow cap, and the list keeps going. When the engine is running and heats ups, feel the heat of the top hose, if the hose isn't hot, the thermostat is most likely stuck open and needs replaced. If it is hot we know you have circulation. The cap on the expansion tank may be defective, if it can't hold the pressure of the water, it will release at the overflow cap if the cap is bad. Also check the coolant level.
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