SOURCE: 95 mustang
hi the temp" sender "in this case is a thermostatic switch normaly with 2 connections put an ohm meter across the connections when engine is cold it will show nill or full scale leave meter connected run motor up untill it is hot meter needle should have moved 1 way or the other if it did not the relay is at fault chris merlinv12
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.
SOURCE: cooling fan relay 1998 neon
on the left(driver's) side of the lower rad support. It's a small flat relay with a plug on the bottom and usually has a blue colored front. held on by two screws. Also, there may be more rad fan relays in the underhood fuse/relay box.
Good luck.
R
SOURCE: cooling fan won't come on.
HI. I have prepared some steps for you to follow.This will aid you will the troubleshooting.
Step1
Check for broken wires or loose connectors around the fan circuit.
Inspect connectors at the fan motor, relay, sensor or heat sensitive
switch, and the Electronic Control Module (ECM)--your car’s computer
control system. Also, make sure to check for a possible blown fan fuse.
These are common and overlooked troublesome spots that may cause a fan
to fail.
Step2
Run and bring the engine to warm temperature. With the engine running, use a voltage test light to check for power
to the motor fan. Be extra careful and make sure to keep your hands and
tools away from the belt, fan or any other engine moving parts. If
voltage is reaching the fan motor, the test light should glow.
Step3
Turn off the engine after you see the light glow. Apply direct voltage to the fan motor from your car
battery using a pair of spare wires. If the fan fails to operate,
replace the fan motor. If the motor operates, your problem is in the
motor connector.
Step4
Locate the heat-sensitive switch or heating sensor if the fan motor
operates with direct voltage and the test light did not glow. You
should find the sensor in the radiator, engine block, or thermostat
housing.
Step5
Measure the resistance across the heating sensor with the multimeter.
With the engine at cool temperature (engine off), it should register
infinite resistance; with the engine at warm temperature (engine off),
you should read low resistance. If both readings state infinite
resistance install a new heating sensor, that’s the cause of your
failing fan.
Step6
Check the action of the fan relay if the heating sensor is registering
variable resistance. Your service manual should specify the power and
ground wires according to color codes and the proper way to test it. If
the fan relay fails the test replace it with a new one.
Step7
Check the connections going to the ECM after you determine the fan
relay is working properly. If you find broken wires or loose
connectors, make the necessary repairs. If you suspect a defective ECM
take your vehicle
to a service shop for a computer analysis. In most cases, the ECM is
rare to be the cause of a failing fan. The above steps should take you
to the root cause of your problem and help you fix the cooler fan.
Please rate and god bless..
SOURCE: cannot find cooling fan relay
check the owers manual for location usualy in the main electrical box under the hood. they are just a pull out plug with 4 prongs some times 5 pull straight back youll b fine
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