Question about 2002 Mitsubishi Lancer

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Fan don't run in heating only. Both run in A/C

Fan doesn't run in heating, both run in A/c

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CHECK FAN SWITCH

Posted on Nov 19, 2013

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1 Answer

Why is my car over heating ?


you may have a bad fan motor that needs replacing. if you unplug the cooling fan and direct feed the motor with jumper wires and it doesn`t run then the fan motor needs replacing. this is what it sounds like as it should run when the motor gets to a certain temp or the a/c is turned on.

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2001 chevy cavalier radiator fan doesn't run


unplug fan sensor if it runs then most likely needs replaced if not buy a used fan at a scrap yard maybe 40.00

Mar 26, 2013 | 2001 Chevrolet Cavalier

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Model 106.74052400 is not cold don't sound like


Are you talking about the interior fan unit?
If so, with it turned on try giving it a light tap with something hard.
If it turns on, then the fan motor is worn and requires replacement.
If it doesn't kick in, then check the power to the fan.
If you don't have power, then check the blower control switch.

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1 Answer

Radiator fan runs too much


You more than likely installed a high temp thermostat, which takes more heat to open than the factory one.
One way to solve this is to install a lower temp thermostat. Or you could try another temperature sending unit, That should run your fan like normal again. But if it doesn't try to swap your fan relay out.

Nov 18, 2011 | 2002 Jaguar S-Type

1 Answer

I have a 2003 jaguar x type 2.5 the cooling fans not working and over heats


cooling systems are the same for all vehicles, depending on years ,, in your case all you have is a fan, relay, and sensor, controlled by a circuit with a fuse, so , always check fuses first, if bad replace,, if not, unplug the fan at the connector,, use a jumper wire to supply the fan with 12 volts direct from the battery ,, if it starts, its not the fan, if it doesn't the fan needs replacing, if that checked out to be good,, backtrack to the fan relay, ( usually the problem) locate it in the under the hood fuse box, it will be listed on the tag on the underside of the fuse box cover ( or in the owners manual itself) you should have a couple of the same relay in this box,, ( Jaguar uses the same relay for a number of items) locate the one for the fan, and switch it out for one that runs a system you know is working, start the vehicle,, and let it run until the thermostat opens,, watch the temp gauge don't let it move up to high. soon after , the fan should start , if by now the system isn't working, its going to normally be a short in that circuit, and would have to looked at by a trained professional with knowledge in electrical circuits

Oct 05, 2011 | 2003 Jaguar X-Type

1 Answer

Overheats. runs fine when idiling.holding the fan off, and a/c on still cant make it overheat but once driving for 5 mins starts to overheat. replaced thermostat, water pump looks to be fine. cleaned rad....


Water pump. The impeller will slip on the shaft. As you said runs fine at idle, but when you run it harder the impeller doesn't spin fast enough (slips). Causing it to over heat. replaced to many for this problem. Also The pumps that have the metal impellers will be tight when cold, don't let this fool you. when they heat up they slip.

Jul 20, 2011 | Mazda B-Series Truck Cars & Trucks

1 Answer

Car keeps over heating because fan doesn't turn on


Your car has electric fans and they are activated by a switch that is mounted in the bottom of the radiator. What you need to do is verify first that the fan motor is good. After that then you want to "jumper" the switch and see if the fan runs. Jumpering is when you disconnect the wire from the switch and use a piece of wire to connect the wires of the harness together as if the switch was "turned on"..If the fan works then the switch is probably bad, If it doesn't then I would look for the fan "relay"..

Jul 11, 2011 | 2000 Ford Focus

1 Answer

06 Kia Sedona overheats when ac is on. If the ac is off the van will return to normal temps. Had the compressor just replaced and v-belt. Both fans appear to be running when ac is on.


Does the engine over heat or the gauge goes to hot. Really hot. Since the A/C is on , this puts an extra load on the engine. This is why the fans come on when the A/C is turned on. This is usually low speed fan mode. High speed doesn't come on untilll 220 to 230 degrees. Most vehicles. Cars don't over heat untill the gauge gets in the red, when it starts getting close is time to worry and stop. I guess the question to you would be, What does the temp gauge read?

Jul 02, 2011 | 2002 Kia Sedona

1 Answer

The fan doesn't work on my '89 cavalier 2.8. I replaced the temp sensor and the fan heat switch just above it, still no good. I bypased the switch and wired the fan direct to ignition side of fuse...


Can't remember where they are exactly on yours but there are a group of three or four relays either back on one of the fenders or on the firewall. One of those is for the fan.

May 15, 2011 | Chevrolet Cavalier Cars & Trucks

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