Silverado blower motor resistor keeps burning out. The blower motor draws a LOT of current.
Silverado blower motor resistor keeps burning out. Feb 28, 2021 · HVAC fan blower resistor keeps dying Jump to Latest 8K views 30 replies 7 participants last post by Ravalli Surfer Jan 14, 2024 May 20, 2023 · The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. Used a test light to check power and I only have power to new harness at the red wire. blwr. Power comes from the accessories side of the keyswitch, through a fuse, and straight to the blower motor. I turn everything off, pull over and find melted wires at a multi wire connector. Each time, I would replace the resistor (advance cheap model) and it would last anywhere from a few days to several months. Mine would make/break causing the blower motor to cut-out whenever it wanted. also on my 2000 the blower resisters were a total defective design should have been a recall . / See if the voltage goes up and down with the setting on the panel. Found mine to be a bad connector @ the heater speed control resistor under the right dash @ the floor level. Dec 28, 2016 · This is a strange circuit. Resistor Module Connector and Blower Motor Resistor Replacement 1. I have dual zone manual climate control with auto temp. If the light comes on or you have a 12 volt reading, the resistor and wiring are okay and the blower motor is faulty. Any ideas? Jan 27, 2024 · After reading up on all the posts related to the topic of bunt out pigtails and resistors, I did all the recommended solutions like replacing the blower motor. Tighten the screw using a ratchet with a brief extension. the only thing to burn those connectors terminals is heat created from high resistance and that can burn out the resistor internally. the replacement I installed NOT GM has a lifetime warranty and I do drop blower motor and clean it/insp for debris Jul 8, 2023 · 1) Power goes through the speed switch, then to the blower motor resistor, and then to the blower motor 2) Power flows directly to the blower motor from the fuse. Installed it and everything is working great now. I replace the blower motor resistor which fixes the problem but within 2 weeks it burns out and again, only the highest fan speed will work. It could be faulty. The original has three prongs and the new resistor has six. Replaced my son's blower resistor about 2 months ago. After that the resistor burns out in a few weeks leaving me with only the high speed setting. The blower motor resistor must only be removed after the bolts have been removed. Your car's blower motor resistor allows the passenger comfort unit to regulate the rotation of the auto's cooling fan. Pin pointed it to under the glove box. Note: Connector replacement is required even if the connector was replaced on a previous Jun 22, 2009 · Had the same problem too. Being a junk yard part, we'll see how long it last. On the flip side, if the blower motor resistor isn't doing its job properly, if the signal that it's getting to the motor is causing the motor to put a lot of strain on itself, it could burn the motor out. Go get a $30 one from advance Auto. 3. Resistor plug and resistor is kinda burnt / melted. Okay well I'm about a $20 part off Amazon. I replaced it because I thought the old one was drawing too much juice because I ruined the motor balance when I cleaned it last year. I already replaced the resistor thinking that would solve my problems. Jun 18, 2015 · Also, if you smell burning plastic or smoke begins to enter the cabin when the blower is going, that is also a sign you have a faulty blower motor. I have attached a pic below showing the exact unit in my truck. Jul 19, 2011 · Please help. 8 or so wires in this connector. Feb 5, 2021 · 2009 - 2014 Ford F150 - HVAC resistor keeps burning out - Recently had the HVAC resistor burn out. Prior to undertaking any of the demonstrated repairs on your vehicle, we suggest you consult with a certified mechanic or another professional who can adequately advise you of the proper repair or remedy required. Pulls in from work today sweating with the same problem. Without a blower motor resistor in the vehicle the heating won't operate correctly. Before the fire, the blower motor RPM was fluctuating; which always happens before either the resistor or motor burns out. Blower resistor terminals can develop resistance, and when they do, they get hot and begin to oxidize even further, creating large amounts of resistance where no resistance should be, heating the wire terminals and the wires feeding them until they scorch and melt the blower resistor connector. While I had it out, I plugged the blower motor fan up to a battery and let it run for 20-25 minutes and it ran perfectly fine. resistors were a circuit board really cheap crap. Sep 23, 2012 · BUT I am having this same issue. Remove the blower fuses (Htr A/C & HVAC 1 fuses). I realize the connectors are probably too small to conduct the amount of electric that is flowing through the parts. This can also sometimes be confirmed by bumping the blower motor with the switches on. I checked the fuse, and it was blown. did some probing with test light getting 12v all the time with key on or off @ harness. Oct 21, 2020 · My 2001 mustangs fan for the AC and heat only works on the highest speed but not any of the lower speeds. May 9, 2014 · 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. It starts out slow and you figure there is something wrong with resistor, resistor connector (which melted) or the blower motor's old, or they-don't-make Nov 7, 2016 · Just the blower is intermittent, not the compressor. When this happens, the extra current may make the resistor run hotter and, particularly in the case of a PCB-type resistor like the one in the pictures above Feb 6, 2022 · The most common causes for AC fan blower motor not working in Chevy Silverado 1500 are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. There could also be various airflow settings that won’t work or you could fail to get air at all. This article is all about checking and replacing your car’s bad blower motor resistor. Step 2 – Check the switch selector. 3)Power is switched with a relay Jan 8, 2016 · Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. blower motor works fine. mtr. Got a resistor from dealer, plugged it in and it works on all speeds but gets really hot really fast when on 3, 2 or 1. This is my way of how i fixed the problem of the ground wire constantly melting the wire harness ,which then leads to constantly frying your blower resistor Apr 24, 2023 · The resistor can fail due to several reasons like a worn-out blower motor, water, leaves, any dirt at the blower inlet, and high electric current than required at the resistor. It must handle not only the power demands of the fan when you are driving, but it also has to absorb and dissipate tremendous amounts of heat as a byproduct of its normal operation. In most cases, a blower motor resistor fails due to corrosion or overheating. I pulled the blower motor fan and it looked good. Figure 1. My HVAC control module keeps failing (the unit in the dash with knobs for fan speed and air flow, plus dual-temp sliders). Jul 4, 2010 · 2004 silverado 6. If the amp draw exceeds the manufacturer’s specifications, replace the blower motor. I move the controls then i begin smelling an electrical smell and look toward the blower motor and it's smoking. Nov 12, 2023 · The lights are small incandescent bulbs I believe so they just burn out over time, very common. Jun 14, 2016 · If all of the tests above are okay and you want to go a step further, place a test light or voltmeter in the wires going to the blower motor. The Silverado 2500HD blower motor resistor keeps burning out. Do I need to get a new six prong harness? Jan 30, 2022 · Thanks for reading–and you make a very good point. My blower motor seems to work great so far. Unplug the blower motor and check the voltage at the blower motor using both leads and change the speed of the blower motor on the AC control panel. Nov 1, 2009 · I have a 2001 Chevy Silverado not sure why my blower isn’t getting power to turn on? New resistor and harness for resistor. I went to a junk yard and pulled a resistor out. Mar 16, 2015 · Thanks. Everyone keeps thinking the motor is drawing too much power causing the wiring or resistor to burn out so I keep putting in new motors. May 20, 2018 · I replaced the hvac module with no change. The purple from the resistor to the fan motor is an 8-10 gauge May 9, 2023 · What are Blower Motor and Resistor? A blower motor is a crucial component in the heating and cooling system of a vehicle. Heat doesn't work on all speeds? Follow this quick install for an easy fix! These AC Blower Motor Resistors typically go in these trucks, but can be purchase Dec 27, 2023 · Since we're talking about pigtails I'm going to have to piggy back on this thread. Feb 4, 2013 · Back in september, I replaced my blower motor resistor with a duralast resistor, yesterday when I was driving to work i noticed that it was getting cold when driving so i turned up the blower motor to five, still nothing, leaving it on five I was smelling wireing burning, the wiring harness connector melted into the resistor and shorted a few wires together, I disconected them immeditally and The automotive repair work depicted in this series is performed under the direction of the manufacturer of the product featured. … That’s often true because something like a bad motor bearing could make the blower motor work harder to move air, which can draw more current through the blower motor resistor. May 13, 2021 · A very common issue with blower resistors is a burned out connector. New blower. resistor was an upgrade. Cut the wires that link to the blower motor resistor after removing it. Check the fan motor and wiring for any signs of damage, corrosion, or loose connections. . It is responsible for pushing air through the vents into the cabin, allowing for a comfortable temperature. Dec 25, 2017 · A few minutes later I smelled burning wires. The old original blower motor had a noticeable 'drag' to it which I surmise was due years of wear, tear, and build-up of crud around the bearings and shaft. Finally, if you hear that the blower motor is still running even when the Silverado ignition is in the “off” position, chances are, your blower motor needs replacing. Replace the blower motor resistor and module connector using the following procedure: Remove the blower fuse. 0l. Better than paying like $40 for one. repaced 2x . Since then I have replaced the resistor twice. Fixing the blower motor resistor can help better the AC mechanism. i replaced Blower motor over a year ago and have no issues with it working set aside from the hot wires. was told aftrmkt. The crimps that I had used had softened up quite a bit, this time I soldered them together. I had a resistor overheat, blower motor seemed fine. 2001 Silverado 1500 automatic, 256000 miles, replaced Jan 30, 2019 · Last year we had a cold snap and I had a blower motor resistor crap out on me. The heater blower motor resistor in your car leads a hard life. ;-) Next replacement, I will do both motor and resistor. I got new pigtails and a resistor twice all burned out, I have new air filters and put in new relays. If the blower motor resistors’ internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. On top of that, the fan speed can become inconsistent or intermittent, making for an uncomfortable drive. This can also be caused by a blower motor switch, so a proper Feb 8, 2017 · The blower motor itself is about a month old. resister keeps burning out. May 19, 2020 · If I turn my AC off for a minute, it usually will work fine temporarily (5,10 minutes or so). Dummy me cut of the original harness. checks out ok when 12v applied. 2. 2 years ago my original motor went out, bearings started equaling and seized up, and it took out the resistor too. driving me crazy. Not as common as the other way around. Only paid like $6 for it. If the blower motor resistor harness is burned, what do you do about it? pull the wires and repin into a new plug? Why are they notorious for burning? Jul 25, 2011 · A worn-out blower motor may still work, however, it will require more amperage to operate, this extra amperage is pulled through the resistor and can easily burn it out. I can’t afford to put a new switch on every 2 weeks. Nov 4, 2011 · Refer to Resistor Module Connector and Blower Motor Resistor Replacement in this bulletin if one or more of the symptoms is present. This time I replaced all 3, motor resistor and connector. When I turn the fan on I get a distinct burning smell that smells like it is electrical. It has the rotary control. No go. Mar 30, 2020 · Repairing a bad heater blower motor resistor. Well two months ago, I bought a new blower motor, and another resistor. Fan speed does not have set speeds, it's more like a rheostat. The NEGATIVE side of the motor, looking for a ground, is wired to the bottom of the resistor. Sep 23, 2009 · I am trying to replace the blower motor resistor in my 2005 Chevy Silverado. I replaced the resistor, 3 times, AC/Delco, Napa, then Autozone. Whether you have a physical fan speed switch or the dual climate feature in your Silverado, there is a button or switch that is dedicated to start or speed change of the blower for the AC or heater. Mar 22, 2020 · Repeat failure with blower motor resistor? Here's a permanent solution for an AC/Heater Blower Resistor that Keeps Burning Out? This video can help most cars with fan speed Jul 17, 2018 · If you’ve replaced a blower motor resistor and that replacement has failed, it’s time to conduct an amperage test on the blower motor. This high current, along with a "dry" connector will result in prolonged heat build up, and corrosion, rusting. I stopped by and put it in my dads garage, troubleshot it identified the issue and jumped it so i could get the wife and lil ones home with some heat, it was below zero outside. later resistor burns out again. with the key off there should be no voltage to the blower motor whether the fans speed fan switch is on or off. I'm not saying your motor is bad, but keep it in mind. Oct 6, 2013 · I have a 2004 Chevy Express van and I am on my 5th set of parts. Not all DMM can measure amperage. learn the step by step method of repairing a failing a/c blower. Dec 3, 2013 · water gets to the blower connector that is were the plastic connector melts down. Replaced resistor with an SMP(RU893) resistor and everything worked fine for 2 weeks and resistor burned out again with REPLACE THE BLOWER MOTOR RESISTOR AND RESISTOR MODULE CONNECTOR. Disconnect the connector from the resistor module. Step 3: Unplug The Wires. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. I don't want to keep burning out the pigtails and resistor. Oct 18, 2016 · Water leaking back into air system, draining into the blower motor casing, and causing blower motor to burn out the resistors and melt the resistor plug (but the blower kept running - poorly). maybe i should get oe resistor. On the other hand, a resistor regulates the blower motor’s speed, ensuring that the air flows at the desired level. 2001 Silverado 1500 automatic, 256000 miles, replaced AMEDEE ASE certified tech ADVANCED LEVEL SPECIALIST. long story short, I'm not an electrical expert and can't figure out why i keep frying resistors. A broken blower motor resistor will cause the car's blower to spin at top speed. Scared it's only going to last another 5 minutes then burn out. learn the most Feb 5, 2012 · I mean couldn't someone who was having this issue at least hook up an ammeter to their positive battery connection, run the Jeep with everything off, except the fan blowing at high speed, record the number of amps shown, then replace only the blower motor and repeat the test recording the new amp reading and calculate the difference, if any, in the amp draw at the battery between the two. Aug 1, 2021 · this video is usable on all 2000-2006 chevy suburbans, silverados, & tahoes. I've read many threads here, gone back a year; and don't see anyone else with this issue. Fullsize Trucks and Utility Vehicles - Htr A/C & HVAC 1 fuses. I have replaced it 3 times in the last 2 months. Tried a new control module as well. Jun 29, 2015 · If that doesn't fix the problem, move forward to Step 2. The bolts holding it in place just need to be unscrewed. The four inputs of the resistor come from the fan switch, which is fed by ground. In some cars, a failed blower motor resistor can cause a heater fan to stop working completely. Feb 18, 2015 · After pulling out the old blower motor I compared the 'ease' of turning/spinning each one. I have a 2001 Astro that I bought new, and up in till the last year has been trouble free. May 15, 2006 · Older blower motors that had maybe 3-4 distinct speeds used a resistor pack and a toggle switch, but more recent designs use a transistor to control the blower motor speed. NOW as for the test since we have voltage at the orange wire and the black wire is a good ground(the one that DOES NOT GO TO THE BLOWER MOTOR) then when you left the red in the orange wire you simply put the black Blower motor resister keeps burning out. So I replaced the resistor and motor, and a few weeks later the new resistor and the connector on the harness were burnt out. Remove skirting to find wiring harness between blower resistor and blower motor melted. The new part fits but the electrical connection harness do not match. 00:00 - Intro 00:27 Mar 9, 2023 · If the blower motor resistor is bad, your blower motor can get stuck on a single speed. the reostat is responsible for all 3 speeds . Test your HVAC Jan 8, 2014 · Hi, I've been battling with burned up blower motor resistors, wiring, and motors themselves for about 3 years on my 2007 1500 classic Silverado. Nov 30, 2012 · I am having a problem with my blower motor on my 2004 Chevy Silverado 1500. Within 2 months, it would burn again. They keep melting where the red wire goes into the connection from the harness to the blower resistor on the housing. About a month ago, my blower stopped working on certain speeds, then it quit working all together. Finally the connector became arched so badly inside the circuit opened & the blower quit altogether. 2wks. Midsize Utility Vehicles - Blower Fuse 35 located in the Underhood Fuse Block Jul 29, 2020 · A few hours ago i get in my truck and the A/C is only blowing out the defroster vents. Apr 10, 2019 · I have 2003 Silverado K1500 LS. I easily (4 or 5 screw and a plug) installed the new blower motor and all has been well ever since. Didn't think anything of it I was in town and not far from my parents house. Apr 26, 2022 · My 2010 cooked 4 blower motor resistors over time before I finally got fed up enough to figure out a resolution without replacing the motor since it was still functioning. If yours does use the resistors and toggle switch, the resistors would most likely not be on the control board but somewhere in the air ducts to keep them cool. The motor finds ground through the blower motor resistor, then the speed switch, and then ground. Tested the blower on a 12 volt and it spins. Other HVAC repairs are NOT covered in this product safety special coverage bulletin. Nov 21, 2019 · After a month or two, it may burn your new resistor out. Over time, the heater blower motor resistor can wear Resistor Module Connector and Blower Motor Resistor Replacement 1. Nov 1, 2022 · The blower motor resistor may now be easily accessed. Blower stuck on one speed and when turning off the heater control, the blower continued to run. The blower motor draws a LOT of current. Lower the close-out panel enough to gain access to the resistor module connector. The old one burned the harness and the blower motor and burned resistor. Why does this happen? Q&A: Blower Motor Resistor Issues in Chevy Silverado 2500HD - Solutions & Troubleshooting Oct 19, 2021 · Last week the resistor literally melted, smoke filled the cabin. I started having problems with the front air blower motor working. I replaced the fuse, and it blew again, so I went and got a new resistor. May 30, 2023 · The fan resistor is designed to handle a specific amount of current, and if the fan motor or wiring is faulty, it can draw more current than the resistor can handle, causing it to burn out. the fuse will be located in the fuse paneleither on the drivers left side Mar 18, 2022 · Replaced blower motor and resistor, this time it worked for 3 days then quit again. 3 months later my blower motor died on me. went online was told to get dlr oe harness. Blower motor resister keeps burning out. What’s causing the blower motor switch to burn out so often? I notice the dial to adjust the Is your vehicle's HVAC system not working as it should? Learn all about the bad blower motor resistor symptoms in our latest video! From diminished airflow t Apr 15, 2015 · I have seen this on many vehicles from Toyota to GM, Ford, Dodge, Nissan, etc. mlve uurtkmu ouwq gdffyss rqbecdi xnyqfy jckws pvubyg dkrfi uwmmriz