The radiator fan on these cars has two separate speeds they can run at, LOW and HIGH. Order Cooling Fan Resistor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. You should be able to have two speeds (low and high and you will be able to tell the difference as high is like huricane force). #04-01-37-006: Heater-Ventilation-Air Conditioning (HVAC) Hiss-Type Noise (Replace Low Speed Engine Cooling Fan Resistor) - (May 12, 2004) If the two speeds are working then everything in the wiring is good (fan, relays, wires, plugs etc). The Radiator Fan Resistor. So right side radiator fan wasn't running the other day as the left side kicked on. If not the resistor or wiring is bad. The radiator fan doesn't seem to be kicking in at all, even when it gets to 95 degrees. After a bit more research I deduce that the radiator fan is definitely dodgy. Check for voltage at the radiator fan connector and then check the resistance across the resistor. Found out the driver side wire to the resistor was toast. It may be easier to see from under the car. Low Speed Fan resistor? Inspecting all three components can solve half of your problems. I have checked the obvious fuses in the box over the battery, and also checked the terminals on the two main fan relays but they all look good to me. 6. Next connect the jumper between M1 30 and V1, the drivers fan should run at low speed. A quick visual inspection established that the low-speed relay and resistor were in place and that fuse F2 appeared to be good. The most common problem for this concern is the blower motor resistor is bad and it needs to be replaced. Radiator fan is not turning on, when A/C is switched on. The Relay in the TIPM (K11) labeled “Radiator Fan Low” The dual relays over by the brake master cylinder labeled “Fan Relays” on the internet (Mopar Part 56055666AB) The lack of a P069X style code being thrown led me to believe this was a unique problem with only the “high” speed part of running the fan. Both fans were cycling on and off in low speed. And I checked the fuse of resistor, but it was ok. Next connect the jumper between M2 30 and V2, the passenger fan should run at low speed. That might be why the high speed circuit is good. My low-speed fan wasn't working, so I bypassed the resistor. The accelerator pedal moved rearwards by fifty one mm. It is plugged into the back of the fan, and it is a box-like contraption with springs. However, if the resistor fails, various problems with motor performance may occur. Can anyone offer any advice on doing a bypass? Upon checking, the radiator fan only turns on high speed. What I meant I the other comment, is that I confirm that the low speed fan resistor is bad, but I figured out that if you remove the low speed fan resistor, the high speed fan is activated at a lower temp and you dont have to be stuck in … Then I checked the radiator fan resistor with multimeter. In the spring, I installed a 180 degree thermostat and adjusted the fan trigger temps to 196*F for low and 202*F for high with my handheld tuner, since my new thermostat now regulated engine coolant temp at 186*F at cruising speed. Hey Carroll, I have a 1990 S2 spare fan resistor. To make sure I am looking at the low speed fan resistor. I jumped the high speed (#22 for right side high) and the fan worked so it must be the low speed Resistor. Contents[show] Resistor Location 1992 → 1995 On the 93-95 models, the resistors are directly beneath the left headlight, behind a rectangular body panel. Oe Ford F5rz8l603ac Radiator Cooling Low Fan Resistor NewOe Ford F5rz8l603ac Radiator Cooling Low Fan Resistor New ANCAP Crash Check - Ford Aim (LHD) Without having Aspect The passenger compartment held its form properly in the offset crash exam. Followers 0. Testing the fan … Different speed settings can help the motor to efficiently handle heat problems. When the fan no longer ran at low speed -- but ran when the A/C was on or when the coolant temperature got to the high speed fan threshold -- the problem was this ballast resistor had failed. Most of the problems with the fan that have been documented on the forums are to do with the resistor pack on the 1st stage fan control and mine definietly wasnt coming on with the air-con as it should. Bypassing each relay (shorting pins 87 & 30) in turn showed the fan operated in both low-speed and high-speed modes (although of course now at the same speed). A bad low-speed relay, fuse F2 blown or an open fan resistor would prevent the fan from operating on low speed—again, provided there were no wiring problems. The MAF has nothing to do with this issue. Fixed my situation where the low speed on the fan for the radiator wasn't working, directly affecting AC performance allowing correct pressure and then only the high speed fan kicking in. It is located behind the glove box. Didn't work turning AC on, so I jumped the low speed relay (#21 for right side low - Bentley's has a typo for this) and it still did not operate. Although fan1 (low speed) does not working, my car's engine temperature is always 90 degree. The HI and LOW cooling fan relays ... gets .While cool your fan moves slowly. It must be the same type. I have turned the aircon on, and the low speed fan kicks in but the high speed fails to switch. ... i have a burnt out resistor on my slow speed fan on my 08 MCS but the fan itself is totally fine. By rkctdwn, March 27, 2008 in Under the Hood. It wont run on low speed. Recommended Posts. The resistor allows the fan to operate with more than one speed setting. They are accessible without removing the belly pan. After following all the advice on my ZX-# running very hot, I believe I have located the low speed fan resistor.It looks corroded. Spliced with a new wire and problem solved. When I leave my car idling for awhile (I have to at one of my jobs), it will run on high speed until I'm back underway with some moving airflow, and that's with the AC off (I turn the AC off when it's parked, and don't even use it much in city driving). Replace the faulty resistor and burned harness with a new genuine Ford unit. It is 0.6 ohms x 70 watts. But anyway, my radiator fan seems to only operate at the highest speed. Ive checked the fuses and the relays and all good. 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