Question about 2003 Mitsubishi Eclipse Coupe

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My Mitsubishi eclipse overheats in heat mode and the fans shut off that cool the engine. What do I do?

We thought it was a blown head gasket, but it's not loosing coolant. It does smoke some out the exhaust, but not as much. Radiator did have a crack...fixed it, flushed everything and refilled. One day it lost all the reserve coolant and smoked really bad....since then it stopped loosing coolant and the smoking is hardly noticeable. I have to keep the car in defrost mode or it will overheat. Noticed the fans cut off when I put it in heat mode and don't come back on...works fine in defrost mode.

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  • 79 Answers

Defrost is turning the fans on so there is probably an issue with the fan controls on the car.

Posted on Nov 06, 2014

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Posted on Jan 02, 2017

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trevino1970
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SOURCE: 96 mitsubishi eclipse overheating while AC is on!

Try replacing your cooling fans since both fans are probably not coming on at the time the a/c is on. If your car uses a single fan, then it must have a hi and lo speed so probably the low works but the high doesn't. If you can barely hear the fan spin then it is probably working in the low speed position and you should check that.

Posted on Jun 27, 2012

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SOURCE: coolant blowing out of radiator into overflow bottle at start up.

Typically would not overheat until enough coolant was lost. Find out if they mag fluxed the heads, or had it done. A lot of shops rebuild without doing this step as it's expensive. If they got a rebuilt head, again they need to know if it was mag-fluxed.
It's harder to mag flux the block while in the vehicle and assembled.

Posted on Dec 12, 2009

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SOURCE: i have a 2003 mitsubishi eclipse v6 its

Water pump.If your car can go a while before overheat,water pump.Water still goes through but it is unable to keep up.
Good luck! Greg

Posted on Aug 21, 2010

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1 Answer

My 1998 Mitsubishi eclipse GST was overheating I changed out the thermostat and still continues to overheat why?


You have to have a thermostat in the system. Have a compression test done to check for head gasket or cracked head/s. Check the flow rate of the radiator ( blocked cores) check the condition of the cooling fins on the radiator. Check the radiator cap. Check if the fan is working when hot.. If you have a viscous fan hub on the fan then replace it . run the fault codes to check for air/fuel problems . Check for load and speed conditions as high speed when fully loaded will cause your problem . Check that it is actually engaging over drive and not over reving the engine.

Aug 01, 2014 | 1998 Mitsubishi Eclipse

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My 2005 jeep liberty over heats, any solutions


check to see if you have a viscous fan hub and if so then replace it . Check when the overheating occurs If it is at stop lights but cools down when travelling. It is the hub. If it overheats when going slow and under load it will be the hub. If it overheats when travelling fast then check the radiator for core blockage and have a compression test done to check for head gasket / cracks Run fault codes and check for blocked exhaust system --cat converter)

Jul 02, 2014 | 2005 Jeep Liberty

1 Answer

Engine overheating


Overheating can be extremely bad for a car. Back in the days of carburetors, when engines were made of steel, overheating was much more common, and less damaging. But the modern engine has far less tolerance, with its aluminum blocks and, often, aluminum heads.

Many head gaskets have been blown out by overheat issues. Many heads have been cracked. These are not cheap repairs. Therefore, be vigilant and watch that heat gauge (thermometer). If your car starts to overheat, pull to the side of the road, and let it idle (do not give it a fast idle - that only worked in the days before electric fans) and, if that does not seem to be working, shut it off.

Bohdan Bodnar wrote: "The 2.2/2.5 liter cooling systems *MUST* be purged of air before operation; otherwise, coolant flow blockage will result (i.e., hot, possibly REALLY hot, engine). Partial purging will cause the engine to run hotter than normal; the temperature will gradually drop to normal as the system purges itself over several days/weeks."

Oct 21, 2012 | 2003 Mitsubishi Outlander

1 Answer

Car overheated and lost all power. how do I get it to start?


ENGINE NOT GOING TO START IF GET TOO HOT FIRST THING I WOULD REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP THEN ADD COOLANT UNTIL COOLANT LEVEL CORRECT THATS WHEN THERMOSTAT OPEN UP AND TOP HOSE HOT.CHECK FOR LEAKING RADIATOR HOSES CHECK TOP RADIATOR HOSE CHECK BOTTOM RADIATOR HOSE.CHECK FOR LEAKS AROUND THE RADIATOR LOOK DOWN BELOW COOLANTS FANS CHECK FOR LEAKS AT RADIATOR CORES OR LEAKS AT THE RADIATOR PLASTIC SIDE CONTAINERS. CHECK FOR LEAKS AT WATER PUMP WEEP HOLE AND CHECK FOR LEAKS AT THE HEATER HOSES AROUND ENGINE BLOCK TO THE HEATER CORE HOSES. THERE IS A REASON CAR OVERHEAT.IF CAR OVERHEAT WHILE DRIVING YOU HAVE FAULTY THERMOSTAT OR LEAKING OUT COOLANT OR BLOWN HEAD GASKET.IF ENGINE OVER HEAT WHILE SITTING DURING A LONG IDLING PERIOD.YOU COULD HAVE FAULTY COOLANT TEMPERATURE SENSOR OR FAULTY COOLING FAN FUSE OR RELAY.HOT WIRE COOLANT TO SEE IF IT RUNS IF NO REPLACE FAN MOTOR. IF YES FAN MOTOR COULD HAVE FAULTY WIRE OR PCM FAILURE. CHECK ENGINE CRANKCASE IF OIL LOOKS LIKE MILK SHAKE ENGINE HEAD GASKET LEAKING.

Nov 26, 2010 | 2002 Mitsubishi Galant

5 Answers

Car will overheat while at idle


yes the head gaskets leaking on modern aluminum head engines is all to common. never overheat them, if they start to get hot shut it down and find out why, it can of course be the fans and plugged radiators or faulty thermostats but sounds like in your case the head gasket is leaking and combustion gas is entering the cooling system and this causes an overheat

Jun 08, 2010 | 2002 Mitsubishi Galant

2 Answers

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.

May 19, 2010 | 1995 Mitsubishi Montero

1 Answer

BLOWN HEAD GASKET


You can do a compression test on each cylinder, if one or two cylinders are lower than the others, that could be a sign of a blown head gasket. Also, do a pressure test on the cooling system to see if the cooling system holds pressure. Check your oil for anti-freeze, and vise-versa. Any white foam around the oil cap? Or oil around the radiator cap?

May 08, 2010 | 1997 Mitsubishi Eclipse

6 Answers

Truck over heats instantly


Chances are, and I know this sounds kind of stupid, that the thermostat was installed backwards. I had the same problem once, after replacing the entire cooling system it still overheated and that is what the issue was. I would definitely check that. I hope this helps and please don't forget to rate me.

May 21, 2009 | 1994 Toyota Pickup

2 Answers

My monte carlo overheats when idle but no signs of a blown head gasket nor water in oil. the temp gauge will go up to half way then the radiator fans will come on. when i'm driving it will go down to


When the engine is "over heating" are the radiator cooling fans running on high speed?

Has there been any engine work performed on the vehicle lately?

Let me know.
Regards,

May 01, 2009 | 1997 Chevrolet Monte Carlo

3 Answers

I have a 1996 mitsubishi eclipse and it overheats real fast. I changed the thermostat and don't think its's the water pump so what can ut be?


You should have what is known as a TK head test done.Very effective in isolating wether you have combustion chamber gases escaping into the cooling system.Take all the spark plugs out and check to see if there is any sign of water on them.Is the fan working correctly?

Oct 30, 2008 | 1991 Mitsubishi Eclipse

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