Question about 2003 Mitsubishi Lancer
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Posted on Jan 02, 2017
Could be a few things.If you check radiator fan and its ok move down to the thermal power switch usualy at the bottom of the radiator.Make sure you have power in and out of the swich when the engine is at operating temp.Use a test light/probe easy to use and cheap to buy.If the switch is ok the next step is the relay in the box with lid next to the battery.Sometimes just pulling the relay out and putting back in will fix the problem due to poor contact.To sum up its usualy the thermal temp switch but check every thing else before wasting money on the wrong things.Good luck
Posted on Nov 08, 2008
ok here we go and you aren't going to believe it...
I replaced the thermostat step one
I noticed that I had a small leak at the engine side of upper hose fixed that by taking it off and cleaning it and putting the hose back on Step two
then while refilling the reservoir with coolant i found that the hose that was supposed to be in the fluid was curled up on top and not sticking down in the fluid where it should be.
played with the hose until i got it to fall down in the reservoir where it should be Step 3
I started the car with the radiator cap off and let it run until it got to normal operating temp. and keep filling the radiator with fluid until the level stayed constant. Then put the cap back on and test drove. Everything worked fine haven't had that much heat in awhile and it kept blowing hot even when i stopped and let it idle for ten min.during test drive. Checked reservoir when I got home and had to add a small amount of coolant but not much.
I really think that the hose in the reservoir not being in the right place and pulling air into the system instead of coolant is the real culprit of this drama, but i replaced the thermostat to be safe.
Posted on Feb 21, 2009
I would take it back to whoever replaced the module however, if you want to check for the problem yourself, Look for the AC compressor. with the AC turned off have someone start the vehicle, while watching the AC compressor have the person in the vehicle turn the AC on. If the clutch engages then you have lost your freon charge and need to have the AC unit serviced. If it does not start turn the engine off and check all the wiring connections going to the AC compressor. If all the connections are good start the vehicle, and have the person in the vehicle turn the control to cold and turn on the defroster. If the AC clutch engages then you have a bad ECM module or mis-programmed ECM take it back to be Properly programmed and repaired. If the clutch does not engage it is possible the AC compressor is bad. Take the vehicle to the Mechanic to have teh AC system checked to see why it is not engaging.
Posted on Aug 27, 2009
Your A/C unit is low on Freon, or you have a bad pressure switch. Turn on the Air Conditioner, with the engine running, & put it on Max. Open the hood, & see if the compressor is spinning. If it is not, then you need gas. You can buy refill kits at a local Walmart. If you have a leak, it may be a wasted $30. That is what I paid for a 22 oz. can of R-134A Freon. I had a dealer regas mine & put in a dye that they can find leaks with a black light. It may be cheaper in the long run. My drier, in front of the radiator has a leak. It will cost $460. to replace it.
Posted on Jul 11, 2010
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