Question about 2001 Chevrolet Cavalier

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Car overheats new radiator 2 t stats diffrent eng new water pump, had same problem with first motor cust cooked first motor filled cooling system with radicat plus overheats sitting in shop heats up real fast upper and lower hose stays cold also radiator is cold heater blows good and hot and both heater tubes are hot any ideas

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Okay sounds like you have a clog within the system, first of all, drain the whole cooling system, run clean water thought the top of the radiator, look to see when the water comes out nice clear, replace the lower hose if you have a petcock close that, refill the top of the radiator, until it is full, start the engine, with engine running turn your heater, let the car warm a little, then reopen the petcock or loosen the lower hose and let the water draw out a little until is pouring out nice and fast, then re-close the petcock and stop the engine.
try and get 40% of the water out, and replace it with 50/50 antifreeze fill to the right point of the cars specs.

Posted on Oct 12, 2012

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Try replacing radiator and cap?

Posted on Sep 05, 2010

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97 aurora overheats new stat flush system oil not milky or over filled new cap still overheat but when i put the cap on half way tighten i dont overheat whats my problem


Was the engine overheating before you replaced the thermostat ?
By not putting the cap on tight, you are not allowing the cooling system to build up pressure. So it could be a restriction somewhere like a radiator hose.

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Okay, it may be due to overheating, that may be the noise you heard, lets hope. first allow engine to cool, open radiator cap or the resivoir cap, which ever is the fill, remove the bleeder at top hose and fill radiator slowly until coolant comes out bleeder.

note if water pump was replaced due to leaking and engine was overheated at that time then it may be a good idea to replace the thermostat .
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A few questions, does this jeep have an electric fan?
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I had the same problem with my 1993 Liberty LX. Remove the thermostat (located inside bottom radiator hose engine connection - take the connection off and thermostat is inside). Reassemble (minus thermostat), reconnect bottom hose. Slowly (very, very slowly) refill the radiator and remove the bleed plug ( located beside the top hose connection to the radiator - a black square plug with a phillips head cross in the middle). When the radiator is full and clear water (no air bubbles) is coming out of the bleed point, replace the bleed plug and then the radiator cap.

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This fixed my overheating problem. Good luck and safe motoring.

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