I am having a 2003 toyota camry . suddenly both the engine as well as the AC fan motors do not operate. It starts running if we tap the motor but stops if we switch off and switch on the AC. Again we have to tap the motors. Can the problem be rectified without replacing the motors.
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Re: AC fan motors
Simple fix for now solution
grease the fans bearings sounds like there over do for this kind of maintenance
also could be a speed variable cooling relay
example a vehicle reaches certain speeds the fans shut off alowing the air outside to come inside to keep vehicle cool with out using much power
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Only two I think ac fan come on as soon as ac is turned on and the
engine depends on switch 188 degrees it schould be marked
on the side of switch also pull tjhe wire of switch when you ground
the one wire off switch fan schould come on if fan stays on all the time relays stuck if the motor random on and off relay or motor
first replace relay cheaper then replace switch ckek motor
sirect from battery always. Hot wire jump it.hope this helped
On some Camrys the radiator fan is run by hydraulic pressure from the power steering pump. I think the sensor you mention is the engine coolant temperature sensor, which is in the circuit which operates the fan when the engine becomes hot. If this fails the engine will overheat, yes. The fan does not cool the hydraulic fluid from the pump.
If your power steering fluid gets low the same thing can happen, but you would notice immediately as the steering would become intermittently harder.
both fans do not turn on at the same time. one fan is for the AC condensor and the other is for the radiator. A/C turns on one fan, Radiator temp switch turns on the other one. If you have never replaced the thermostat, or done a radiator flush/refill, you should do one now.
make sure your electric cooling fan behind the radiator
is running with the a/c on , if not tap on the back of the
housing with a blunt object , but dont break it .
if it starts up , its the motor , if not ,a fuse or relay.
If its not running , repair it or dont use the a/c , as
the high pressure can dammage the compressor.
You have a radiator fan motor that is not running either due to a thermostatically controlled temp switch,(Located on the back of the radiator) a failed fan relay (in the engine compartment fuse /relay box) or a bad fan motor. You can troubleshoot by checking for 12V DC to chassis ground at the fan motor temp switch. If you have power in you can jumper with a wire the switch wires and see if the fan runs. If it does not run then you need to check the fan relay and motor.
To test the fan you can run a wire from the battery to the fan and another wire to chassis ground to see if the fan runs. If after directly connecting 12V DC to the fan motor and it does not run the fan has failed.
As far as the you either replace it with another one or... have to figure out which 2 wires control the fan motor and jumper them out to see if the fan runs.
It is most likely the fan motor's internal brushes have worn out. Either you will have to replace the magnetic brushes, or replace the motor all together. There is a tube and wire harness that will have to be removed. Than there is 3 or 4 bolts that hold motor to firewall.
The cooling fans always receive power form the battery. The relays, when applied, allow the ground to pass onto the fan motors to operate them. Either your relays are stuck in the "active" position, or your fan motor wires (white with the black trace) are getting an unwanted ground. Remove all 3 of the relays, and the magnet clutch relay, see what happens. If the fans quit, the relays are at fault. If the fans continue to run, you have a fan motor ground wire shorted to the ground.