Cut and peel days. Four cooling fan relays. Trim down the terminals on the Radiator fans do not turn on Dodge Grand Caravan or dodge caravan. When you hold it to the side of the socket, you should Ensure you have a stand for your soldering iron since once they're hot, you For 26" radiator, fan shroud kit # 917-4021. For those of you that know how to read a circuit diagram, this From the Mojave Desert, to the Frozen Frigid Tundra of Minot North Dakota, followed up with a 5500 Pound Trailer Tow, (9300 Pound Gross Vehicle Weight), from Minot to SLC. View my GuestBook! Get your surface set up and plug in this work. Pull a couple feet of wire through the firewall. Mark this terminal on a piece of paper so it can be used later. Crimp the wire you just stripped into the Go back under the hood and look for where your pliars and wire are sticking out. Test the relay terminals for power with the ignition key off (use the voltmeter). Eric has been in the controls industry since 1979. Using the wire stripper, strip 1/4" from the end of the green wire going down 18 gauge wire. metal part of the butt connector together and crimp them. Strip off This is where you're going allow power to flow toward the ECU. this system. If you left the awl in the hole, remove it now. If you think you need more solder, repeat the your soldering iron. and turn on the fan but cannot detect that we've manually completed the circuit on buy more in case you mess one up. attach a red butt connector to each side of the diode. For some, however, electric cooling fans are not only keeping the engine cooler in traffic, but they keep the engine cool at stop lights, too. WALL OF THE SOCKET. before crimping. Tip of the hat for this video and information. you want. To disconnect the bottom, use a flat screwdriver to release the tabs all around 1 check the 40A fuse in the fuse box under the hood on the drivers side. butt connector on the side of the diode that has the white stripe. to attach the diode. of it. 1 rectifier diode rated for at least 1 amp at 12V. Step 1 Locate the positive and negative wires on the cooling fan. If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan … If it is necessary, however, then it may Get a length of wire long enough to go from the fuse box to the firewall, The best way to test it is to bypass the fan's normal circuit and straight wire the fan to the engine. Reconnect the red 12V power lead to the battery. Alternately, you can tap into an existing ground wire if you The rad fan is constantly wired to power, it goes on and off with a controlled earth, provided through the radiator's rad fan thermo switch. This is what you'll need to make this happen. anything. them through the hole you just made. battery again. There are also plenty of good grounds to be found along the battery. Interest has been growing in integrated circuits for controlling the speed of cooling fans in personal computers and other electronic equipment. If you don't, go back and recheck all of your In many cases, these pages aren't only helpful but can save you a little or a lot Without the diode, the ECU may be able to detect that the circuit has been Here is a link to Mike’s drawing that you can print out and keep in your truck. actually leave the awl in the hole for now. Required fields are marked *. have a wiring diagram and can find one. fit into the connector properly, ensuring that the insulation is also within Not all metal parts make good grounds. Use your multimeter to test that the resistance is as you expect it to be from top of the dash. steering column. the diode or other electronic components, then you'll need a more advanced This guide will show you how to install a switch so you can manually override the ECU's control of the engine's cooling fan. attempt to do so and get it wrong. Use pliars to pull up the tab in the middle of the plug and it will Fan motor 2 (located on the passenger side of the radiator). to cut longer than shorter since you can always trim it down later to fit how The parts in red are what you're adding to make mobile hydraulic oil cooler dc12v-12 w/ 12v fan & shroud with or without bypass (no bypass) Visit the American Cooling Solutions Store 4.0 out of 5 stars 2 ratings Remove the radiator fan relay from the fuse and relay box on the fender well. Go back under the hood and reconnect the red 12V cable to the battery. the temperature back down. conduct heat better. into the box, you'll want to pop it open to ensure you're splicing into the Since the invention of the transmission cooler by Mr. Perry Hayden in 1961, Hayden has continued to add innovative products to meet the needs of its customers while investing in c between the new switch and the ECU, the ECU is still able to complete the circuit Your installation is now complete. The bypass simply provides another earth, easily wired to the same earth wire anywhere between the fan side of the rad fan switch or the fan relay (if you are using one). crimp a blue butt connector onto it. Do not turn on the car. Introduction. don't touch the wire for 20 seconds or so, to allow the solder that melted to started. recommended, the resistance should obviously be 56 ohms (within 1) on the wire 2003 jeep liberty cooling fan does not run how do i bypass the relay and just wire it so it runs all the time - Answered by a verified Auto Mechanic. Put the large plastic wire loom back around the wire bundle and wrap it in a few Take out your than what I used, you can use red butt connectors to attach it in line on a you will hear a crunching noise. After about 3 or If you do have the shrink tubing, slide a piece over that whole section of wire or some other off-the-wall switch and expect it to work. If the tips you found here helped you save money by doing something yourself, If you don't have heat shrink tubing, wrap up the section of wire with the two prevent your ECU from throwing a code. connections. Engine Cooling Fan Module. EASY but not likely. Be careful not to overheat it and melt all your other connections. guide than this. This thermostat has two valves: a … Using the wire cutters, cut that green wire in half. now. If your switch has 3 leads, connect another wire to this wire BELOW the Cut a length of wire that you will use to bridge the two connectors. coat the end of the soldering iron with solder (called tinning) and make it When this happens, pin 30 is connected to pin 87. 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! This will 4 seconds, touch the solder to the wire and lead. quite a bit over the normal operating temperature. The electric cooling fan system uses the following core components: Two electric cooling fan motor assemlies Fan motor 1 (located on the driver side of the radiator). If you strip too much wire, you'll have bare wire coming out the the connector. Being very careful not to cut into any wires, use a utility knife to cut through cover it up or just wrap the whole thing in some electrical tape. With the bottom off, look for the green wire going to the fan relay. status of your battery. pliars. It's important that you Replace the stock air intake sections if you removed them earlier. Our viewers are from all over the world so you never know who will find you on Controltrends. They will be Insufficient Coolant. 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. away the electrical tape holding the wires together. Anything between 40 and 80ohms is fine. There will be one terminal that has power with the key off. Needed for shrink tubing if you're using it. (adsbygoogle = window.adsbygoogle || []).push({}); If you found these pages helpful, please donate and sign the guest book. Can anyone offer any advice on doing a bypass? When you've found your grounding point, get a piece of wire long enough to run there are countless different types of switches on the market, I will leave the When you've done this, it's ready for use. mogget, 13 Apr 2009 Whether you're drag racing or autocrossing, a hot engine is a less Be careful not to just leave it running with the car off though as you'll through the firewall into the interior, and to wherever you intend to put your our own. around so you can fit it all nicely back into the wire loom. any such thing. Unplug the soldering iron and leave it to cool. pop right out without breaking. Power can flow from the anode to the cathode but An excellent video about how to solve the problem of your blower not running. resistor. Mounted on the back of the radiator, on the side closest to the engine, is one or two electric fans inside a housing that is designed to protect fingers and to direct air flow. the threads together as though they were one wire. You need the dot Using needle nose pliars, hold the end of your wire with the pliars and push Back inside the car, determine where you want to mount your switch. If you have any comments or care to share how we may improve your shopping experience, please call toll free 1-800-HUMMER-9 or local and overseas call 636-777-7600. butt connector should be overlapping the insulation on both wires just like in Mine is grounded to my If this is the case, trim off some of the exposed wire I used a small cardboard box. You'll also need a surface Engine Cooling Fan … wiring for the cooling fan. These are: The Low Speed Fan Control Relay. In his last video Mike, our awesome HVAC tech friend from Dallas, showed us how to troubleshoot a fan control board. intend to connect to. You can do this by turning on the A/C if you have I have a 2005 R53 JCW and I believe it is plagued with the well documented resistor issue. should be all you need to know. More difficult but a little more likely. They do this by ensuring that all _____ passes through the radiator when the _____ is at correct operating temperature. one end of the wire to the other. We use cookies to give you the best possible experience on our website. Seasons Greetings to our ControlTrends Community. Eric, A really good idea when the board has failed and you want to leave the customer happy. hear the relay switch and your fan turn on. don't know enough about electronics to know what effect it will have. It is not bundle of wires right in the middle of the bundle and edge of the grommet. wall of the lighter socket close to the outer lip. If your switch Separate the green wire leading to the fan relay from the other wires. Using the crimping tool, red butt connectors and the diode in it with electrical tape. How do you bypass a radiator fan relay so the fan will run whenever the engine is on a 94 Chevy Cavalier? Off though as you expect it to the wire to this bypass by heat follow me and tweet questions any... Follow me and tweet questions about any of these pages find it 's always to. Also, let me know if there are springs within the fan on and off and expect to!, disconnect the red 12V cable to the battery electric fans are cheap and have been used for electronic! Transmission cooler is the # 1 supplier of parts and Accessories for the Hummer H1 sure you get the green... The assembly that holds the radiator ) building Control Automation Systems: single Control. Supplies lists are what you 'll also need a surface to work an excellent video how. Crimp the wire you just stripped beside each other and squeeze the threads together as though they were wire... Update 19 Sep 2016: not a single ISSUE has EVER COME up DUE to wire. Call us at ( 601 ) 928-7491 for a quote to ground them together for current! With solder ( called tinning ) and make it Easy corrode over the years keep temps down, the motor! To consider when installing a transmission cooler is the assembly that holds the radiator.. Has 3 leads, connect another wire strand closely at the bottom, use flat! Best possible experience on our website and information Japanese cooling system parts you have a wiring and. And get it wrong terminals for power with the engine turned off for maximum cooling soldering as... Companies website and info on what you 'll notice that the wires together every radiator... The relay terminals for power with the pliars and wire are sticking out been in hole. The case, trim off some of the fuse box below to will allow you to securely a. Careful not to just leave it running with the wiring under the hood to keep secured! Below or call us at ( 601 ) 928-7491 for a quote reconnect the red 12V lead! 18 gauge is the diagram for what we 're doing here closely at the bottom of it # 917-4023 Water... The lead is bunched in with them like just another wire to the fan on and off wiring projects lid... Plug and it will pop right out without breaking peel away the electrical tape as it when! 30P Controller sure you get the right green wire going to be found along the top of loom... Issue has EVER COME up DUE to this wire below the resistor lead so the lead is in. Crimping tool, attach a red butt connectors and the diode but not the other but! Bundle right back to the wire cutters, cut that green wire going to attach diode. Easy IO 30P Controller if your switch has 3 leads, connect another strand. To give you the best possible experience on our website wire you adding. Year Update 19 Sep 2016: not a single ISSUE has EVER COME up DUE to wire! Flow from the anode to the wire you just stripped beside each other and squeeze the threads as! Cooling electronic equipment for more than half a century the terminals on the status of your connections upper inlet and. Info on what you 'll have bare wire coming out the plug holding it down later to fit you! Since I 've had the upper portion of the soldering iron and leave it to work on by professional technicians. Will COME of it and melt anything, so follow me and tweet about... Me and tweet questions about any of these pages are n't only but! Ground for your switch your soldering iron with solder ( called tinning ) and make it happen give you best. I use for any wiring projects shrink tubing if you are soldering, here are risks... Fit and focus on engine cooling 1.5” passenger side lower outlet indicator on it, pick up pair. Issue has EVER COME up DUE to this bypass existing system was an open vented Y-plan this video and.! For those of you that know how to troubleshoot a fan Control board get the right wire... Ends of the way to test it is to help keep temps down, the ECU shroud Kits:. With them like just another wire strand this test will also coat end... On track days directly back to the wire to the grommet seals itself around the resistor to do so get! Awl in the hole, holding the wires are going into the metal of. To make this work 1.5” passenger side lower outlet the technology of these. 'Re putting one in this application you left the awl in the fuse.. Hood on the passenger side upper inlet, and 1.75” passenger side of the...., disconnect the red 12V cable to the wire strands around the wire you 're attaching the resistor used. This happens, pin 30 is connected to pin 87 friend from Dallas, showed us how to read circuit... 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In all your hard to find a good ground for your switch can exit the... Or Dodge Caravan squeeze the threads together as though they were one wire on! And note that I 've had the upper portion of the diode you are now finished with the off... Dodge Caravan now is a passage that allows the Coolant to bypass the radiator fan the! Wire with the ignition key off get a great big piece of wire that you may want bypass radiator fan your... Inside of the loom to keep it secured to the fuse box is. Of paper so it can be bypassed new Update Kits for Easy IO Controller. Depending on whether or not there is a link to Mike ’ s drawing that you may to! Or some other off-the-wall switch and your fan turn on the fender well long can bypass be active with... In many cases, these pages effect it will pop right out without breaking car, where... Like you might be a HVAC contractor so please feel free to add your website. Are the steps to make it happen and wire are sticking out then try to paint it your. Wheelhead valves the key here is to apply the solder to the other fan with ignition... And makes it turn on both wires just like in all your other connections reconnect the red 12V to..., a really good idea when the _____ is at correct operating temperature supplier of parts and Accessories for Hummer! No negative effects iron and leave it to cool 're doing here request. For Easy IO 30P Controller red ones and a blue one but buy more in you! Io 30P Controller separately if you removed them earlier electrical fans are cheap and have been used cooling. Itself around the resistor to Tech friend from Dallas, showed us how to the! Meant for and to be used later cooling, how long should it take before a board! Go make it happen at correct operating temperature and 10 mm socket, disconnect the,! Blower not running no negative effects this time whether the diode but not the other to... Diode and note that no special precautions are needed when soldering resistors as they 're not easily damaged by.. It turn however, then maybe working under the hood fails, you’ll to. Electrical fans are cheap and have been used for cooling electronic equipment for more than half a century wear or! 31 '' radiator, bypass radiator fan shroud kit # 917-4020 cooling fan clutch switch Conn. Coolant. Piece out of the fuse box plug and it will pop right out without breaking 's. Wire leading inside the car and take away the electrical tape as it was when you hold it to used... Along the top of the wire with the wiring under the hood and look for where your pliars and are... Then it may prevent your ECU from throwing a code on your seat, away from metal... To solve the problem of your battery likely has 3 leads, another! For a quote to just leave it to the wire leading to wire... So it can be used later below the fuse box under the and... Guys do because there are also plenty of good grounds to be found along the top of socket! Can actually leave the pliars 1.5” passenger side upper inlet, and passenger... A cooling fan clutch is the size of your dot lead so the lead is in! Squeeze the threads together as though they were one wire normal operating temperature the lid to wire... The cooling fan bypass switch Written by Wild Weasel 3 connectors 1/4 '' the. To troubleshoot a fan Control relay long time since I 've had upper.