The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. The problem will get progressively worse over weeks and months. The blower switch and resistor are on the ground side of the blower motor to ground. My 04 SLS's blower motor works intermittently. The fan blower for your ac/heater is located under the glovebox. Jul 29 2018, 2:47pm. Intermittently works when activating ignition via the key. The problem is that it works sporadically - typically doesn't work on the coldest days so getting to work can be an adventure. Whenever it comes on, it blows strong and the air is cold. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. Test the motor with an outside power source (like another car battery), I bet it acts screwy. Blower doesn’t work Equinox Blower doesn’t work Equinox, no blower or intermittent operation. By continuing to use this site, you are agreeing to our use of cookies. It is responsible for controlling the blower motor’s fan speed. Since the blower motor on an air conditioning is among the toughest working ... and the blower continues to work. Hello everyone, My wife and I bought our first house a year ago and we are coming up on the end of our home warranty in a few days. Many owners are having problems with melted electrical connectors that stop the flow of power to the blower motor. When this happens the burners cut out and the furnace seems to shut down until it cools off. HVAC blower fan testing & diagnostic questions & answers: Reader questions & responses help diagnose trouble with the blower fan or air handler fan used in both air conditioning and heating systems. The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Blower motor works intermittently 1 Answer. Has there been any leaking from the hoses? And see if the furnace works all night. A blower that works is equally frustrating, but the blades spin very slowly. Learn More. Blower motor works intermittently. First Generation Ridgeline (1G 2006-2014) 1G Problems & Issues. If you start at the blower motor, and check resistance in the circuit, you will find the problem in … The blower motor sits right next to the resistor or controller (resistor is for manual AC, controller is for automatic AC system), so the connector can be found on the blower motor itself. Sometimes it works, most times not. Our Tempstar natural gas furnace works fine 95% of the time, however about once a week or so the blower (set on auto) fails to come on. It's been working for over 6 month's now! However, it is susceptible to failure, which will affect the luxury of driving a BMW. Intermittent blower issue. 2009 AC Blower works intermittently. Symptom: Blower motor only works when you're messing with the key in the ignition, turning on to start, or halfway between, or some variation in where your key happens to be at a specific point in time. Average failure mileage is 83,900 miles. So I pulled the fuse to save my battery and off to bed. I have a 2008 Nissan Titan and the AC blower works. So get out there and give it a smack or two! Here are the details about it & signs of its failure, and ways you can fix the blower motor resistor. The 2004 Pontiac Grand Prix has 4 problems reported for blower motor works intermittently. I've got 8000 miles on my 2014 Grand Cherokee and the AC blower fan stops working intermittently. It may be one of two issues when the blower runs intermittently. The blower motor resistor plays an important part in the luxury provided by BMW as it is intricately related to the functioning of the AC system. I have a 2003 Accord with the same problem. A few days ago I went to put my truck in my garage for the night and when I shut it off the fan wouldnt shut off. When it does work all fan speeds work. If you find 12 volts on both sides (going in and coming out of) the blower motor, your open circuit is after the blower motor. Blower seems to work fine with heater. Replaced the motor, did not correct the issue. Well, I don’t think it’s the fuse (otherwise the fan wouldn’t come on at all,) it’s probably not the blower motor resistor either. Have you testing for power at the connection to the blower motor to see what you are getting there? Yes those are fine. If the furnace is overheating, the limit will open and cause the blower to continue until the heat is dissipated. Q: The AC blower on my car only works intermittently. Initially, the mechanic replaced the blower motor and fan worked fine for about 4 months - then stopped again. All fuses good all relays good. If your blower isn’t working or works intermittently, don’t automatically assume you have a bad blower motor. Well it's either the switch or the blower motor. Once the motor starts running, normal vibration keeps the brushes working. Heater blower? On a zoned system, over heating is easily caused when only 1 zone is calling for heat, and a high MERV air filter is used. Probably the motor if you use heat or AC often, and it's happening intermittently. Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC … The system will then try again 5 or 10 minutes later when it's cooled down enough and upon that try the blower motor usually starts just fine. I'm having issues with the AC Blower fan not wanting to run all the time. The intermittent operation is caused by worn brushes inside the motor. After it cools off I can put the fan in "ON" mode and the next time the thermostat calls for heat things work okay, but only with the fan in ON mode, not auto. I suspect it’s the blower motor, let me tell you why: My house fan kinda behaves like that… when the blower motor is about to die, sometimes it won’t come on at all, other times it will work just fine, before finally dying, months later. HVAC Blower Works Intermittently Not sure my wife drives the vehicle and we live in a warmer climate. Mechanic's Assistant: Have you checked the coolant level? After my air conditioner runs for an hour or two the blower … It could also be that the limit is going bad, and opening when it shouldn't. ... Just a failing blower motor? ... 26,223 satisfied customers. When it is not working, it won't come on in auto or manual … Has anybody else seen this? That's all it took for for mine to start working again. Seems to be improved by jiggling the wires under the dash. No matter what I do (turn on/off all AC controls etc, turn on/off the ignition) I cannot force it to come on. My ac blower motor won't turn off no matter what. Seems to be improved by jiggling the wires under the dash. As air flow is already reduced because it is only one zone calling. Air Conditioning and Cooling Systems - Blower fan intermittent on AC only - Model of my unit is GMS80704BNA. ... 2007 - 2017 > This site uses cookies. HVAC blower stops intermittently Discussion in '3rd Gen - 2007 - 2017 ' started by ... You might also check the molex under the dash near the blower motor. My 04 SLS's blower motor works intermittently. When the heat turns on occasionally (about 1/2 the time) the blower motor will fail to start and the gas will shutoff because of the high limit switch. Jump to Latest Follow 1 - 9 of 9 Posts ... started up, and the AC blower will not come on even though the dial is turned to the highest position. 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