Question about 2003 Mitsubishi Eclipse Coupe
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.
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
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
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
Testimonial: "helpful, i will follow up."
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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Aug 01, 2014 | 1998 Mitsubishi Eclipse
Jul 02, 2014 | 2005 Jeep Liberty
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."
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