Question about 2001 Mitsubishi Eclipse Spyder

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Overheating with normal temp on gauge

My car gets hot and and occasionally smokes, i smell a burning coolant smell coming from the car, I have replaced the t-stat, and still had the problem, i thin took t-stat out completely and still had the problem, had the coolant system flushed and yet the problem is still here, checked the radiator with a hose and the water flowed freely, I started the car and let the car get to operating temp and the t-stat opened ran a flush through there and we had flow, I am hoping its not the water pump but most likely thats what i will have to replace seems like there is no circulation after i had the system flushed i drained the coolant from the radiator and only about a half gallon came out of it, when I went to pour the coolant back in it only took maybe a quarter of that half gallon and the coolant sits on top of radiator, could it be a clogged radiator? I was told it could be the heater core is clogged, but i read on numerous sites that with a clogged heater core I would get no heat at all but the heat is cranking and hot. I am very confused on the situation. Thanks

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  • Mitsubishi Master
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The heater core would not cause you needing a quart or two of coolant to fill it up. And the water pump would not affect this either.
Something is blocking the system, it could be something in the radiator or something in one of the hoses.
You might try taking the top hose off and filling the engine with the radiator blocked off. Or fill the radiator with the engine blocked.

Posted on Dec 12, 2012

  • James Frith
    James Frith Dec 12, 2012

    i did take the hoses off and run water through the radiator and started the car to get to operating temp and ran a flush through that and everything flowed with a nice steady flow and when i went to put the coolant back in that i drained out it didnt take much and just stayed at the top of the radiator fill hole and didnt go down

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jose_v17
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SOURCE: 2001 eclipse no heat

Stick your head under the driver side dash and look on the side of the blower motor check to see if the wire to the damper is moving through the small plastic conduit. over time the wires lose their rigidity and instead of moving the damper it will bend. Let me know if these look normal

Posted on Jan 29, 2010

  • 184 Answers

SOURCE: 1995 mitsubishi Galant 2,4 v6 overheating replaced

a few things to check before we condemn it as a leaking head gasket(pressurising water out).
First check the radiator cap seal,no cracks and that it takes some pressure to push the spring loaded part down.
Does both the top and lower radiator hose get hot as temp gets to normal(where thermostat should be open).if not,the thermostat may be a faulty one or has slipped out of seat as the cover was bolted back down onto it.(temperature will differ either side of it).I have had some of these come in with part of the waterpump impellor rotted away.same symptom of one hot and one cold hose,and water doesnt flow inside radiator with cap off(ensure this is not removed if engine is hot)and temp where the thermo should be open.
Possibly the radiator needs sending out for the top or side tank to be removed and each tube cleaned out.this is a lot more effective than trying to reverse flush with water only.
But if temp is normal these areas should be fine.
Do the hoses swell with pressure and become hard to squeeze in a short time?this could reveal a leaking head gasket and should be tested with a teekay type tester for the presence of cylinder gases in cooling system.
Do the fan(s) come on if sitting idling at normal temp for 5-10mins?water can be pushed out if they dont come on or their cut in/out temp is incorrect.hope this helps.
let me know some times re when it pushes water out,do you hear a boiling sound from inside engine or radiator when this happens,any other info that may help diagnose.

Posted on Mar 24, 2011

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