∙ 2007-11-02 19:37:04. Based on your description, the most common cause of the problem you are having is a defective blower motor, which is causing the relay to overheat. your toes will be pointing @ the bottom of the blower. Posted 6/5/2010 16:46 (#1225552 - in reply to #1225501) Subject: RE: Ford L9000 A/C blower motor switch melting? Mount Vernon, WA It can only be two things: 1 ) excessive current draw from the motor due to a dragging wheel, or 2 ) excessive resistance at your connector. Disconnect the blower motor wires from the blower motor resistor. Hook wires to each side of it. If the source of excessive draw or the electrical connector isn’t replaced, the chances of a repeat. Replaced blower motor, blower resistor, ambient temp sensor. You can find this tutorial in Spanish here: Prueba: Resistencia del Motor del Soplador (4. Why a converter or Ford did this is beyond me. The connection doesn't even get warm, I retained the original harness/plug and I can still unplug everything if I need to. I investigated to find that the plug connected to the rear of the AC heater unit is badly melted where it connects to the fan switch. Does the blower motor run with the switch in the OFF position? If you leave the blower motor switched continually on you may not notice this. It is down behind the back of the fender and changing it actually requires drilling a hole in the. Something told me the switch wasn't. Fix for Blower motor doesn’t work or stuck on high, Ford. Worn blower motor causes repeat blower motor resistor failure. Maintenance/Repairs. Alot of these trucks' original connector plug had too small of wiring, causing the power wire to get hot and melt the wire insulation and the plug it's self. If power is present, its your blower. Replace the fuse, and the blower fan will work for for a minute or so, then it will blow again. Fig. Any ideas why I keep blowing this? The fan. You'll need to cut off the old plug and use the connectors. alt. This morning. With the key in the on position turn the fan switch to the high speed setting, then to the medium and low speeds to test its performance. Look in passenger foot well on blower case for 4 wire connector. Unplug this plug to the resister. If the motor doesnt work at all at any fan speed, make sure the. I pulled out the plug to find the #5 wire melted and the plug melted as well. Oct 17, 2011 • 1998 Ford. The connector on your Ford's blower motor will have a BRN/ORG wire and a PNK/WHT wire. Failure in the blower motor power module (automatic temperature controls) or resistor block (manual AC) may cause the heater blower motor to work only on the high setting. Save Share. Learn More. Asked by Burl in Beaumont, TX on . The EEC Power Relay is easy to recognize because it's usually a brown color. Remove the glove compartment door and glove compartment by removing the retaining screws and bolts. 4, supercrew with dualzone heating and air. 235,000 MILES. It has two screws mounting it to the blower box. Blower only blow at low speed, no change when changing at the swi. Before you replace or repair any electrical parts, check the appropriate fuses or circuit. Buy Now!New Blower Motor Resistor from 1AAuto. Hope that helps! Jim. keeps blowing #9 fuse 15 ap a/c switch. Disconnect the blower wires. The front heater/ac blower motor isn't working. Replacement of the blower motor along with the blower resistor is common practice. Note that there is a foam gasket between the motor flange and the duct housing. Ford, Dodge, Nissan, etc. Tested each speed lead. Before installing it, I need to do some diagnostics. A failed blower motor resistor is usually a result of the blower motor drawing too much amperage. . Use the old connector as a map for splicing the wires for the new connector. If yes, the switch, blower resistor and wiring is OK and the blower motor is bad. But don't hold it long,as a direct short can cause a fire without a fuse to blow for safety. The blower resistor is an easy fix. worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling. Part # 645-714. JBTJ. A breif history, I had that resistor. Troubleshooting a control relay and a blower motor are two important electrical skills for collision repairers. SELECT. Download Wiring Pigtail/Terminal Kits Identification GuideIt is the fuse for the blower motor or the relay. . The fan settings on my car have been working strange for a little while now. Each of the wires coming out of the switch corresponds to the various positions of the switch. The wiring a few inches back from the fan connector: they were frayed going into a spade connector that was right behind the right side. There is a technical service bulletin (060139002) for the engine and engine cooling. This indicates that the blower is drawing too much current, is probably worn, and should. Blown fuse. 0, np231, aw4, its a heap. Cooling, Heating, Ventilation & A/C - HVAC blower motor - 1999 F-150 blower motor running erraticly for 30 minutes or so and then finally shutting down. In my case it was the relay. I already checked the fuses and all fuses are good. Melted relay. Single switches or relays can fail internally causing a number of different symptoms including no start conditions (inoperative fuel pump or PCM), engine running warm due to inoperative cooling fan, or the AC might not blow cold air. TEST 2: Using A Jumper Wire To Bypass The Blower Resistor. Next item, very carefully try to close up the "ears" in the female side of the connector so that they will more tightly grip the male spade terminal when it's plugged back in. Ford Escort Blower Motor Resistor ReplacementDisclaimer:This video is not meant to be a definitive how to. com Auto shows you how to repair, install, fix, change or replace a bad or broke. It went out again, no air at all, same as last time. also the blower motor stops and will run when i hit the lock - Answered by a verified Ford Mechanic. 1993 ford escort 1. 360 V8 with Automatic Trans. 9. In total there were six generations, spread across three basic platforms: the. NAXJA Member. Fig. Remove the motor mounting nuts and pull the blower motor out. Turned out the fix was the blower motor. Chas, Begging your pardon -- just that I've seen many Escort/Tracer blower motor resistors fail and melt. Please keep in mind this a PAYSITE, and is set up on an. Turn the blower motor on, and the test light should illuminate. Out of nowhere the blower motor quit working on it despite fan speed or manual/auto climate. First this is on a 2007 Ford F150 4. It's not likely option #1, or. Tripped circuit breaker. The blower motor is attached by 3 screws to the bottom of the assembly. When it doesn't work, none of the speeds work. If neither has 12V, the ig. Most of the time, the issue is caused by the OE wire gauge, which is too small (typically 20 gauge) to handle the current drawn by the headlight bulbs. Maintenance & Repair. . redneckred June 17, 2022, 2:11am 1. ] Push the new control into the opening in the dash, it will click into place. The blower resistor is down there near the fan, its installed into the airbox/air duct. Cab ax keeps burning up the screen control module. 1,993 kanata. I checked the blower with a couple of jumpers ant it turns and blows. ok under the hood were the blower motor is, or under the dash were over it may be there is a resistor there has 2 screws holding it in pace with a plug should have 4 or 5 wires on it with a test light or mult meter test for power there if you have power at the red wire the other 3 wires one is your low speed the other is med speed the 3rd id hi speed test them for. I finally found a place that sells the resistors, and went to replace it when I found out that the wiring to it had melted. Unplug this plug to the resister. 9 liter Single Over Head Cam four cylinder engines used in a 1993 Ford Escort ( are. My 98 did exactly the same thing. Although it’s uncommon, this could be one of the bad blower motor resistor symptoms. Ive already went to a junkyard and got a whole new fan and harness (the 95 harness was falling to pieces). The connectors are readily available for around $10 if the dealer doesn't help. A bad connector on the blower motor or the resistor module, or on the climate control unit can interrupt power supply to the blower motor in Grand Prix. 1993 ford escort 5spd --1. Check the diagram on the old motor, to figure out which wires are which. Even if you remove the connector. A couple of things that I would add: If you are like me and like to test things out before putting it all back together, you need to realize that the giant green resistor gets very hot when it is being used, in fact it depends on the same air that it controls and is blowing by it to cool off. Put a 30 amp fuse in it. Dorman Electrical Wire Connector 645-714 $ 31. This part controls the blower motor speeds. So now I'm at the pinpoint test of: Measure voltage between A/C-heater function selector switch connector pin C204-4 and ground. I have replaced the blower motor, the blower resistor again, the blower relay and the blower motor fuse and I am still not getting any air from the vents on any setting. have fuel. VEHICLES EXHIBITING A "SQUEAKING" OR "CHIRPING" FROM THE BLOWER MOTOR AT LOW BLOWER MOTOR SPEEDS. 9. 1973 - 1979 F-100 & Larger F-Series Trucks - Blower switch solution on my 75 F-150 - When you get up in the years, solutions sometimes take forever. Ford did the "standard" pigtail replacement on mine back in 2015 free of charge. This just started after the key was. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. The resister is the problem. Overheating blower motor wire. Two days ago, the same thing started happening again (fan running when car off). Find a location where the black wire can be made to reach the passenger side inner fender, and cut the wire. Heater & A/C Blower. 8. Electrical Systems/Wiring - ICM and Ignition Coil keep burning up - I have a 1984 F-150 4X4 with the 300 I-6. 99. by OldPappy » Mon Jun 09, 2014 12:06 pm. 2014 Pete 587. resister bad would still allow high speed. * The speed of Blower Motor is modulated via the "ground circuit" or the #1 and #4 circuit. have good 12V supply (Pin1) and good Ground (Pin3), at the blower motor connector. I've seen this before on a friends Hyundai where the current pull for one of the. Granted, i havn't tore into my dash to check every single wire, but you'd think if i had an intermittant ground that the blower would be intermittant as well. 1). Dive into these symptoms. Good possibility the connector plastic melted partly and the two pieces fused together. Soldered in a two new heavy duty bullet connectors and done. Burning electrical components. . For HOT, I started with a 12AWG wire. 7M views 6 years ago. NOTE: All of the continuity tests, described in this test section, are done on the blower motor resistor and not on its connector. Blower motor system bypass. *YC . Reply Quote. #1 · Jun 12, 2011. Scared it's only going to last another 5 minutes then burn out. Start on the passenger side. The blower motor resistor connection kept melting. This can also damage other parts of the system if ignored. Loosen the instrument panel at the lower right hand of the glove. Connections that get hot and burn right at the connection point indicate a poor connection. Disconnect the negative battery cable. You can get a knife and try to seperate them first. either way the wire that keeps melting for some odd ball reason still gets 12v to power the motor. 1. Replaced blower motor, yeah. I'm about to just wire in a relay to bypass the fuse box for the blower but I'm worried that might cause a fire since after I fixed the connector it just melted the fuse. I have a 1998 Ford Escort Sport ZX2 built in 1997 VIN #3FALP1132WR132862 that needs a new motor, question is will a motor from a 1998 Ford Escort VIN #3FAKP1135WR200132 work in my ZX2. I replaced the melted wires only to have it do the samething. SOURCE: 2004 Chevrolet Silverado Heater/AC Blower on without Ignition ON there is no relay for the heater fan it's a 15 amp fuse and is on the accessories circuit. heater blows cold air A/C stopped working heater core engine complaint electrical issue heater complaint transmission complaint paint defect Sierra 1500 recall. Remove the kick panels in the cabin and inspect the grounds for body rot, corrosion, or loose connectors. Owners and lessees with affected vehicles will be contacted directly. If its not blowing as hard as it used to its either a bad blower motor or the blower motor resistor. × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. I replaced the blower motor, the resistor pack, and the switch. A malfunctioning electrical component or a short in a wire can cause burning smell in Ford F-150. The connector to the power module/resistor block is known to overheat (and sometimes melt). This is a great write-up by the way, thanks very much for doing this. Buy a 1993 Ford Escort Blower Motor at discount prices. Ford wire looms and electrical connectors offer quality and durability you can count on. they wear out and cause the motor to pull more. 1. The dealer stated that the vehicle was out of warranty and the repair would be the contact's responsibility. Take a pic of where the blower motor wires are mounted. It does not seen to be fan speed specific. Clifford Beard Oct 28, 2011. 186 FORD LTD 4DR SEDAN wiring information. 2003 Ford Escort: the blower motor works but it only blows. Relays are exposed to high current loads and can sometimes get hot when they develop problems. In that particular connector, all the wires are for the blower motor (2 wires), and the remaining wires run from the connector to the [FAN 0-1-2-3-4] switch. 5. I turn everything off, pull over and find melted wires at a multi wire connector. A malfunctioning electrical component or a short in a wire can cause burning smell in Ford. Set your multimeter to Ohms mode ( Ω ). Heater blower motor switch (18578). Dm93, Sep 6, 2021. i replaced the motor in my escort with one from a 96, also replaced plugs. One is that the blower motor itself is faulty and needs to be replaced. I replaced everything to hopefully prevent melting again. If you need, I can send the test procedures directly from Ford. a. You can take two wire connector loose from blower motor, use both ends of test lite at wiring connector terminals, turn on key, turn on hvac and blower. The ground for the blower has. Remove the battery tray. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. In other cases, the issue is the result of loose terminal connections, which can cause resistance in the circuit and lead to overheating. Tech & Repair. Check all ground connections.