Question about Cars & Trucks
My car is over heating cooling fan is not working I test the temperture sensor was bad i changes for new plus a new fan but is i jumper a wire in the relay fan work but with out hot wire is not what can be
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Posted on Jan 02, 2017
SOURCE: Cooling fan wont work
The water temp sensor is located near the thermostat housing. This sensor is what tells the ECM to turn the fan on/off. The water temp sending unit is located near the same area. You know you have the correct sensor is because the water temp sensor has a 2 prong plug. The water temp sending unit only has 1 prong.
Posted on Sep 27, 2008
replace coolant sensor connector?if so can u get a thermo lazer gun to check the block temp? this will tell u if the gauge is incorect,,,go ahead a bleed all the air out of cooling system and see if that does the trick
Posted on Jul 05, 2009
SOURCE: cooling fan
Yes, it's probably the PCM. I had the same problem, and upon replacing the PCM it started working again. If your cooling sending unit is new, and so many parts of your fan assembly are new, it's probably not receiving the signal from the sending unit. Hope this helps.
Posted on Jul 22, 2009
there isa short in the wiring somewhere,which a shop can check for you,or check your thermostat. after 20 years i still have to make sure tat i dont install it upside down. which is easy to do if your in a hurry. my bet is that the wiring going to the coolant sensor has a bare spot and grounding somewhere.
Posted on May 02, 2010
You should have a check engine light on if your coolant temperature sensor is bad. It could be your fan relay. It's position should be located on your fuse box cover(s). To check the fan itself, unplug it and notice that the black (or darkest) wire is the ground, so you can hook your jumper wire to any metal part of the car. The other wire goes to the positive terminal of a car battery. Good luck.
Posted on Jun 06, 2010
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