This is what... - 1999-2006 Volkswagen Jetta nancy, "The Fan Control Relay is bolted beneath the battery tray. The radiator fan will work anytime the engine is hot enough for the temp sensor to command it on. The fan module is located right on top of the fan shroud. Its circuit goes from the battery positive to the fuse. 1 answer & 0 comments. Circuit that feeds the radiator fan switch's ‘On’ or ‘Off’ signal to the radiator fan relay. When you say faulty radiator or temp fan switch, which do you mean? Items per Page. the coolant sensor is the one operating the dash guage unless you mean the fan switch thats located on the radiator. This seems to be working fine as I can see the radiator outlet temp on the VCDS rising steadily with the oil temp. Doing this may throw up a fault code that might clear on it's own or need to be cleared with diagnostic equipment. Original Engine Management has the most complete line of High Quality and Value radiator fan switches. If not, would it be the radiator temp switch in the head or a reay of some sort? Hayden Automotive engineers, manufactures and supplies a wide range of products designed to keep your car, truck or performance vehicle running cool. Hi all, With regards to a 1.9 Skoda Octavia SDi 2001 model. Model depending of course 855 T-5 RHD Blue: MBC, Custom Map based on Rica, K&N Filter, 18T Turbocharger, White/Green injectors [depends on my mood], Blue Silicone vacuum hoses 1998 volkswagen new beetle. Locate the cooling fan switch near the thermostat housing on the left side of engine behind the distributor assembly. Power provided by fuse #4 (7.5 Amp) of the left side dash fuse box (see image 4 of 4). When the coolant temperature hits a certain point, it causes the switch to turn the fan on, which in turn reduces the coolant temperature. He thinks hes located the fan switch on the left side of the engine block in the water pump. Both of these relays have a separate hot wire to the fan. Has not blown on 10 start up's. Here we're gonna' bypass the radiator fan switch with a jumper wire and see if the radiator fan motor comes on. one fan is the radiator fan and the other is the a/c fan. The fitter thinks because the fan is kicking in, he coolant/water is overheating and spraying out the reservoir as steam being too hot and too much pressure. Using a non-flammable heat source, or a pan of boiling water, place the switches brass end into the water. Symptom of a failed Water Temperature switch: When the engine is cool and AC is turned off, the radiator fan will Turn on immediately when the ignition switch is turned passed ACC to the ON position. My problem is trying to locate it. Does anyone have any suggestions as to how to tighten the radiator fan switch without having to remove the radiator itself? We think the problem lies with the radiator fan not kicking in when it should. A-Team Performance Electric Cooling Radiator Fan Relay Kit With Thermostat Installation Hardware Wiring Set 180 to 200 Degrees Temp Sensor Temperature Switch 40 Amp Relay 4.3 out of … if the fans continue not to come on then you need to check for voltage at one of the two fans harnesses. Please let us know if you need anything else to get the problem fixed. Inspect the wires and the wire connections; if they are cracked or worn, replace them with new ones. Location Tallahassee, FL USofA Posts 1,112. Bench Testing The Radiator Fan Relay. A radiator cooling fan on a Chevy Cavalier is controlled by the computer. TEST 2: Bypassing The Radiator Fan Relay. That's a known failure item when the fans are inoperative. 1-24 of 230 Results. I want to replace it in an attempt to get the fans to work again. 1980 124 radiator fan switch. The switch is located about 2/3 of the way down the end of the radiator. Filter. The electric cooling fan switch is installed into a coolant passage of the engine near the thermostat housing and operates the radiator electric cooling fans when the coolant temperature reaches a specified temperature. Hot (+) only with Key On Engine Off (KOEO) or Key On Engine Running (KOER). Visually check the fan if you don’t hear its noise. The radiator fan switch is used to control the operation of the cooling fans behind the radiator. The fans cool the radiator and the condenser. The radiator cools the engine and the fan cools the radiator, so the fan should cool the radiator when the coolant Exiting the radiator, going into the engine, is too hot, like it is from lack of air flow. fan should come on when sensor is disconnected. It’s the fan motor that makes the radiator expensive. I need to know the location of three components. Check out the diagrams (Below). Answer. To repair or replace it, you need to know where it is located in the car. Re: thermo fan switch, install in inlet or outlet of radiator? The dripping is caused by the fluid boiling over into the overflow tank which is then over filling. (.5 -1 second). A radiator fan switch regulates the cooling system of a vehicle. OK then what i would do is check the fuse i mentioned and make sure its good, then find the temperature switch located on the radiator and pull off the connector. One fan should come on when you run the A/C and the other fan should come on when the car gets over 190 degrees. 1-24 of 230 Results. It was a git of a job. prod: 1) ON the AC then at the connector of the aux fan … I had it about 2 years. Fan #1 overide gave me a check engine light. From the fuse it travels to two relays: the low-speed and the high-speed relay. I recently replaced the radiator… If you are encountering problems with the cooling system of your car, one possibility for it is a broken radiator fan switch. Bypassing The Radiator Fan Switch. (very common on Maxima's) if you don't get any power to the fans then it is going to be the fan relays. ... April 23, 2012. ambient temperature switch, a/c cut-out thermal switch, coolant fan control module. April 20, 2012. This is taken after the fan full-on after the 15 minutes delay. I don't need the location of the fan relays which lay beneath the battery I … Get the job done with the right part, at the right price. Connecting the leads of your DVOM to the switch legs in resistance mode. The fan doesnt come on at all, reguardless of the A/C being on or the engine over 220 deg. Sounds like the thermal switch on the radiator either went bad or is unplugged. Standing in front and looking down at top of radiator it is the sensor on left with a gray connector. Only fan#2 can be overide. I have a 1980 fiat 124. To test the Radiator fan thermo-switch you have to drain the cooling system, and remove the switch from the radiator. Only noticed when shut key off there is a small delay of engine stop. The wires connected from the fan to the module could wear and crack due to the heat in the engine compartment, along with rough weather conditions. Where is it located. Buick Century 2003, Cooling Fan Temperature Switch by Hayden®. Sign in to reply. Recently, I was driving my 2015 Jeep Wrangler JK Unlimited through a parking lot on a 95 degree day, and after leaving a stop sign, a check engine light flashed on (later I would learn it was a P0480 Cooling Fan Relay 1 Control Circuit), and shortly thereafter my Jeep overheated. Toyota RAV4 1997, Radiator Fan Switch by Original Engine Management®. Pretty much the only way it should be installed (I'd use tape instead if you can't stand a gauge that acts like a gauge) is so when you activate the switch it activates the radiator fan relay (some years may require something to fool the PCM into thinking it's off to avoid a CEL). BTW, pulling AC relay is a good idea, may be the AC wire signal can be route and control by a switch inside the car. Where is the cooling fan relay (or switch) located. Cooling Fan “Water Temperature switch†is located underneath the alternator. The a/c fan will come on when the a/c is on and the high pressure switch commands it on. air conditioning components. It may be the fan relay or switch (whatever it is called). 1st fan to the left is the rad that controlled by thermo switch and the second fan is an aux fan and will only ON when AC is ON but as they says you can put a manual switch on it to be able for you to manually ON. There's no good reason to install the manual radiator fan switch, ever. The radiator fan switch is located on the lower left of the engine here is a guide to show you. I suggest you don't ride until you get the thermal switch checked and replaced overheating your unit can do a lot of damage. Temperature goes up fast, as soon as I drive, the fan turns off, but I can just pull in the drive way and 30 seconds later the fan comes on. TEST 3: Bypassing The Radiator Fan Switch. General Diagnosis. If you run the engine and unplug the coolant sensor, the ECU should permanantly run the fan as a default setting due to loss of coolant temperature signal. The switch is essentially a thermostat that senses the temperature of the coolant. This last test is optional and shows you how to bench test the fan motor relay. The ECU signals the radiator fan to work at the precise time. The 1980 manual says the fan fuse is 16 amps, and that was what was in the fuse location for the horn, and fan. The inline fuse was modern 15 amp. The can and do operate independently of each other. Location &how to replace cooling fan switch (2003 Honda Element) fans not comming on . mojoem in Staunton, VA on . Also, can someone confirm the size socket required for this? The fan relays are under the hood next to the fuses. Radiator Fan Cost. This ECU uses the information to decide when to switch the radiator fan on. Circuit labeled with the number 4. Where is the temp fan switch? A radiator fan is not very expensive and can cost around $200 – $400. I will check for power, if power is going to the fan then the fan is bad correct? Cooling Fan Switch - Radiator. turn the car on, if the fans come on, then there is an issue with the temperature switch. I just replaced my fan switch with the Neuspeed 3 pole switch that brings the fans on at 80 degrees. I am speaking of the fan switch. Battery power for the radiator fan relay's coil. I'm familiar with the one on the bottom pipe of the radiator. ... Cooling Fan Switch - Radiator. Re: Location of radiator fan switch Post by mitch13 » Wed Jul 03, 2013 12:40 pm Hi, I've taken the van to the auto electrician today, you are right about the fan coming on when the switch is disconnected, he told me the same thing i.e. Battery out including the box, intercooler pipe off, map sensor disconnected, wiring moved and a deep 30mm socket from Halfords to loosen the switch. Where is the radiator fan switch located on a Chrysler PT Cruiser with a 2.4 liter engine? If you have voltage on both fan connectors, then the fans are bad. … read more So, do not worry if the fan doesn’t immediately start working. Find our best fitting cooling fan switch - radiators for your vehicle and enjoy free next day delivery or same day pickup at a store near you! The radiator cooling fans will not come and it causes overheating. Part number is: 141-951-253-B The Fan Control Module is on the lower driver side of the radiator... or it can be located on the driver side lower framerail." 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