Question about 2002 Mitsubishi Montero

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Radiator overheating Changed out the themometer and flushed radiator but it is still overheating. Not sure if it is the fan, the themometer (there was a ton of junk in the radiator when I flushed it) or possibly the water pump. I can drive it at times and it is fine but then out of nowhere it will overheat. Any suggestions?

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If the overheating is only occasional, it sounds like the radiator still has some blockage that moves around and plugs up again. Try flushing it backwards again. If it continues, consider a new radiator. A radiator is cheaper than head gasket work, which may happen if it keeps overheating.

Posted on Nov 30, 2012

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Could be water pump id check tanks on radiator for signs of leaking park on conrete check for leaks keep eye on antifreeze level also check pump for a freeze leaking loosen water somewere

Posted on Nov 30, 2012

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Posted on Jan 02, 2017

kapishtech
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SOURCE: Overheating

I would recommend that you bleed all air out of the cooling system. The bleeder valve is located on top of the engine. Once engine starts to overheat or when you can hear bubbling back into the overflow bottle, turn car off and open bleeder valve. If you see bubbling you have air in your system. Bleed the system a couple of times and see if this helps.A heat sensor sending unit which controls activation of the electric fan could also have failed.But if the heat sensor is properly working then check the radiator cap is it properly fitted or got loose.If its loose it will release the pressure and car will overheat.But if the radiator cap is properly closed.Then its time to check the HEAD GASKET.As you have replaced the head gasket still get it checked is it overheating very quickly or is the head gasket placed properly also check the coolant level in the car. Thanks. you can rate this solution and show your appreciation.

Posted on May 19, 2010

  • 46 Answers

SOURCE: overheating engine

Was the thermostat put in backwards? I know this is a silly question, but I've seen it happen. The water pump will fight it if it is. Another thing are the coolant passages, are they flushed out? Also, if that fan clutch is the original one, I would go ahead and replace that as insurance against the water pump breaking.

Posted on Dec 26, 2008

polarcycle
  • 1392 Answers

SOURCE: overheating problem

I would go with slowcalafl. It is either air, or a cracked head bad head gasket. Remove the radiator cap when cool. Start up the car and watch for bubble emerging from the coolant. If it continues to bubble, you have a bad head or head gasket. If not, look for improper timing as another possibility.

Posted on Jun 30, 2009

  • 1 Answer

SOURCE: Radiator level reducing every day and vehicle overheating

Sounds like a blown Cylinder Head Gasket. Might be a very small leak buy worth checking out.

Posted on Aug 31, 2009

  • 98 Answers

SOURCE: mitsubishi L300 van. Had been running bit rough

sounds like you have a bad head gasket. You better take it to a reputable shop and get it checked.

Posted on Nov 02, 2009

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make sure your fan is working
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make sure your water pump is operating
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and also yes try a flush
also inspect your radiator cap and the overflow
let me know if you need further assistance

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