There is a resistor in the wiring and attached to the shroud that will control the speed of the fan. Location: Glasgow, Scotland. I cut the 2 wires going into the resistor and spliced them together but still only 6 Volts. So the temperature sensor will get the resistance of 326 Ohms exactly by 80 degree Celsius. I have a broken cooling fan resistor and I can't seem to find a replacement number. When I first tested the resistor, it would get slightly warm when the fan ran, but it was cold in the garage and the fan quickly turned off. I have a one fan system. If I bypass it in theory ill just have two hi speed operations. Password: Register: Garage . It has two relays in the fuse box. Discussion Starter • #7 • May 9, 2013. Can I bypass the resistor and wire - Answered by a verified Auto Mechanic . Pics of : Cooling Fan Resistor Bypass. Apr 23, 2013 #1 For an 86 GN. Posting your exact issue in it's own thread will get the most responses, and searching this section for more detailed cooling fan information might be useful. Thermistor. I bought a new fan from Euro Car Parts and it works fine: with a 12 year old fan I thought that fixing the resistor would just be the start, followed closely by fan motor etc This video will show you how to find and fix that part. All the fan mod effectively does is relocate a replacement resistor somewhere more accessible. We use cookies to give you the best possible experience on our website. No pictures, but the fan needs to come out to fix the resister: bumper cover off, bumper off, radiator coolant drained and top pipe off, followed by removing the radiator and fan. Basically two wire coiled resistors one for slow speed one for medium and in the middle a diode which was direct power that runs the fan at full speed. The resistor is there to drop voltage and make the fan run in the low speed. However if your AC doesn't have a charge or it's too cold for the AC come on, or the cabin air fan isn't coming in- then the AC won't turn the fans on. So at 80 degrees the thermostat opens the gateway for the radiator coolant and it needs to switch ON the radiator fan. Never runs higher than 185. This thread from 2011 only addresses checking the low speed fan resistor, one possible reason for no low speed operation only. The next step indirectly tests the blower switch on the A/C Heater control panel by bypassing the blower resistor with a jumper wire: TEST 2: Using A Jumper Wire To Bypass The Blower Resistor. Troubleshooting. I have aftermarket fans with no resister box and the radiator fan switch turns on the low side. MINI R53 models utilize an electronic cooling fan integrated into the cooling fan shroud. I broke my resistor when installing a aux transmission cooler. In that case, the AC trick should work. This resistor is not thermally protected well enough to withstand the power requirements of the fan, and tends to fail within a few tens of thousands of miles. The lower the resistance of the selected resistor in a pack, the higher the current that flows through the blower fan, and the faster the fan will turn. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. There are two different fan wiring circuits, one for cars up to mid 2003, which had the control relay in the fan assembly, and the later one with the control relay in the fuse box. Can I bypass the radiator cooling fan resistor - 1990 Buick LeSabre Published by at 15 settembre 2020. If the cooling fan on your 1997 Ford Windstar isn't working, you may have a problem with your cooling fan dropping resistor. I mounted the resistor using some special heat sink grease on the aluminum motor mount for good heat conduction. So both my rad fans wouldn't run … 4 core, Bee Cool aftermarket radiator installed. 2013-06-18 05:15:47 2013-06-18 05:15:47. Wiki User Answered . Registered User . Engine cooling fan problems only cause overheating in stop and go traffic, and low speed traffic below 45 mph or so. People bypass the resistor to make the fan run at "high" speed all the time for better cooling. Categories . What year is your car? Posts: 57 Rad fan resistor fix. Asked by Wiki User. 76 Posts . If your fan only runs at high speed when it is on it is probably the resistor that has failed. Shortly after the Boxster had its resistor replaced (and a coolant tank replaced -- it finally let go) the Turbo's passenger fan quit working and I thought the same thing was wrong with it but the tech pointed out how protected the Turbo fan stuff was. "Rubber Side Down" S.R. I should be able to bypass the resistor and get 12 Volts. Granted I usually have the radio on when driving, but can you actually HEAR them? 0 0 1. If your fan only runs at high speed when it is on it is probably the resistor that has failed. Want to master Microsoft Excel and take your work-from-home job prospects to the next level? And then fix the fan. Once the vehicle has reached a speed of around 25mph/40kph the air flow through the radiator will exceed what the fan can flow, so the fan is not required to operate above these speeds. Where is the temperature sensor located? The low speed circuit delivers power through a 1 Ohm resistor that is inside the fan motor housing. So i need to get a circuit to operate the radiator fan exactly by 80 degrees and above. Upon investigation I found both coil type wire resistors had broken hence no slow speed with air con on and no medium speed at about 88 degrees. At the fan motor I have 6 volts at the blue wire and 12 at the black wire. FAQ: Members List: Social Groups: Calendar: Search: Today's Posts: Mark Forums Read LinkBack: Thread Tools: Display Modes: 01-17-2016, 10:08 AM #1: Sideways Steve. You're right in your assumption that it's the same fan which is being fed less power in the low speed phase. Remember, if the fan resistor has failed, the high speed setting for the fan will still work; the high speed fan will still come on at a higher temperature and stop the engine overheating. You bypass the resistor by jumping it with a piece of wire, run a jumper wire from one end of the reisistor to the other end of the resistor, the fan will now run on "high speed all the time. There are ways to bypass the AC controls to force the AC circuit to work and the fan to come on. Thread starter Hyboost; Start date Apr 23, 2013; Hyboost Hyboost. The fan resistor is $45, and that fixes the problem also. #275 … The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator. I'd have to look into your overheating threads to figure out if this is causing your overheating. A common problem with these is the cooling fan relay that is on the drivers side frame rail close to the radiator ,and the actual fan assembly itself in witch case bypassing it would do nothing, unfortunately ,even more this is a expensive repair fan module is around $300.00 and the relay is about $150.00 and a pain in the rear to change at min- 2 hours labor! How do you bypass engine cooling fan resistor on 2002 ford focus? The best … I did this on mine and I couldn't get the low speed fan to work, hence the resistor mod. This revealed the cooling fan resistor pack. Cooling Fan Resistor Questions Rennlist Porsche Discussion Forums Pelican … I Have A Broken Cooling Fan Resistor And Can T Seem To Find Mini R53 Cooling Fan Resistor Replacement Cooper 2002 2006 Low Sd Fan Resistor We Need Solution Page 52 North Low Sd Fan Resistor We Need Solution Page 52 North READ Ssd Fan Control Macbook Air. Most of the time it is close to the thermostat of the cooling system, or in some cases even inside of it. There are three different relays involved in the operation of the fans on the 2002 Zetec w/AC: K13 (aka RL8), the power hold relay; K45 (aka RL15), the low speed engine cooling fan relay, which feeds power to the fans thru the engine cooling fan resistor; and K46 (aka RL16), the high speed fan relay which feeds power to the fans on wires which bypass the cooling fan resistor. Yes, I did this repair shortly after buying my '04 S about 4 months ago. Worth checking but just one common cause for that particular problem. But, my suggestion to you is to perform the next test if you're still having blower motor fan issues. Top Answer. In the highest speed state, the blower resistor is bypassed completely and the fan is connected directly to the car’s battery, which allows maximum current through the motor. The second problem is that the cooling fan resistor pack goes out. All that circuit does is provide a low fan speed operation, Both hi and low speed use identical relays except one goes to the fan and the other goes to this circuit which is a honking resistor and a thermal cutout.
Ordered two of the resistors (I always like to have spare parts around) from Mouser ($15 each) and did the mod one evening. The switch on the back of the tstat housing activates the high side. Senza categoria; Tags . I Have A 2001 Ford Focus Neither Cooling Fan Is Working Checked Rewire Radiator Fan Ecm Bypass You High Sd Engine Fan Override Mod You Ford Focus Cooling Fan Resistor You READ Kaifan Riverdale. Then I just tried to bypass the thermo sensors all together to ground, but still only 6 Volts. 30,196 Posts #10 • Aug 26, 2009. ingleton1 said: I guess the best … The reason its in the fan shroud is for cooling because it gets pretty hot. Mod effectively does is relocate a replacement resistor somewhere more accessible fan on your 1997 Windstar! Fan problems only cause overheating in stop and go traffic, and that fixes the problem also can i the! Time it is probably the resistor that has failed all the fan motor i have aftermarket fans with resister... 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