The fan blower for your ac/heater is located under the glovebox. Once the motor starts running, normal vibration keeps the brushes working. It could be a problem with the limit switch, or the limit switch operating properly. I'm having issues with the AC Blower fan not wanting to run all the time. Yes those are fine. It's about 13 years old and not exactly top-of-the-line, so we knew it was on its way out. So I pulled the fuse to save my battery and off to bed. Learn More. When it is not working, it won't come on in auto or manual ⦠Have you testing for power at the connection to the blower motor to see what you are getting there? 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. 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. The blower switch and resistor are on the ground side of the blower motor to ground. Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC ⦠So get out there and give it a smack or two! Probably the motor if you use heat or AC often, and it's happening intermittently. 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. As air flow is already reduced because it is only one zone calling. Shortly after it would only work intermittently, and now it makes a lot of noise and works very slow when it switches on at all. Whenever it comes on, it blows strong and the air is cold. When this happens the burners cut out and the furnace seems to shut down until it cools off. 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. Since the blower motor on an air conditioning is among the toughest working ... and the blower continues to work. No matter what I do (turn on/off all AC controls etc, turn on/off the ignition) I cannot force it to come on. 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. Mechanic's Assistant: Have you checked the coolant level? Intermittent electrical problems can be tough to isolate sometimes. Test the motor with an outside power source (like another car battery), I bet it acts screwy. If the furnace is overheating, the limit will open and cause the blower to continue until the heat is dissipated. The 2004 Pontiac Grand Prix has 4 problems reported for blower motor works intermittently. My ac blower motor won't turn off no matter what. Intermittently works when activating ignition via the key. 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. I've got 8000 miles on my 2014 Grand Cherokee and the AC blower fan stops working intermittently. 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. It may be one of two issues when the blower runs intermittently. Not sure my wife drives the vehicle and we live in a warmer climate. And see if the furnace works all night. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. Jul 29 2018, 2:47pm. It could also be that the limit is going bad, and opening when it shouldn't. That's all it took for for mine to start working again. Blower doesnât work Equinox Blower doesnât work Equinox, no blower or intermittent operation. It's been working for over 6 month's now! Well, I donât think itâs the fuse (otherwise the fan wouldnât come on at all,) itâs probably not the blower motor resistor either. Blower seems to work fine with heater. The intermittent operation is caused by worn brushes inside the motor. The blower motor is the component responsible for pushing air through the vents of your vehicleâs heating and air conditioning systems. 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. 2009 AC Blower works intermittently. Wouldn't work using the on screen... Log in or Sign up. When it does work all fan speeds work. Blower motor works intermittently. Initially, the mechanic replaced the blower motor and fan worked fine for about 4 months - then stopped again. Take your hand and smack the fan blower motor a few times. A potential clue is the motor will often start running when you bang on the heater box. If you start at the blower motor, and check resistance in the circuit, you will find the problem in ⦠Has anybody else seen this? If your blower isnât working or works intermittently, donât automatically assume you have a bad blower motor. I suspect itâs 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 wonât come on at all, other times it will work just fine, before finally dying, months later. Slow Blower Rotation. ... 2007 - 2017 > This site uses cookies. Blower motor ⦠Well it's either the switch or the blower motor. My 04 SLS's blower motor works intermittently. 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. Seems to be improved by jiggling the wires under the dash. First Generation Ridgeline (1G 2006-2014) 1G Problems & Issues. The mechanic says it is most likely an electrical issue since everything else was replaced and is in working order. Q: The AC blower on my car only works intermittently. A blower that works is equally frustrating, but the blades spin very slowly. Seems to be improved by jiggling the wires under the dash. A quick search on here lead me to believe it was the blower motor resistor. 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. After my air conditioner runs for an hour or two the blower ⦠The problem will get progressively worse over weeks and months. Many owners are having problems with melted electrical connectors that stop the flow of power to the blower motor. ... Could be the motor itself. Heater blower? However, it is susceptible to failure, which will affect the luxury of driving a BMW. It may just be dirty, depending on where you drive, or some small animals could have made a home in there. This can be annoying, but troubleshooting is easy. ... 26,223 satisfied customers. 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. Replaced the motor, did not correct the issue. Here are the details about it & signs of its failure, and ways you can fix the blower motor resistor. Re: Intermittent blower motor operation Nov 07 2016, 11:01pm Well I have the blower motor resistor on the way from Amazon, and I have some fancy aviation electrical contact cleaner, so I'll try replacing the resistor and cleaning the rheostat and see how that works out for me. All fuses good all relays good. This article series discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working. Sometimes it works, most times not. 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 2008 Nissan Titan and the AC blower works. Blower motor works intermittently 1 Answer. Replaced the motor, did not correct the issue. Air Conditioning and Cooling Systems - Blower fan intermittent on AC only - Model of my unit is GMS80704BNA. By continuing to use this site, you are agreeing to our use of cookies. 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. The problem is that it works sporadically - typically doesn't work on the coldest days so getting to work can be an adventure. Find out where the power stops. Blower motor works intermittently 1 Answer. Sometimes it works, most times not. It seems to have this problem only with the ac. Has there been any leaking from the hoses? It is responsible for controlling the blower motorâs fan speed. Intermittent blower issue. We've been experiencing some trouble with our combined gas furnace/AC unit (Goodman model PGB036100-1). And if the system uses a bypass damper, the return air going to the furnace becomes much warmer than the room. Average failure mileage is 83,900 miles. 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. Blower motor problem since 2,500 miles NOW at 10,000 First time they thought it was a loose connection to the blower motor. HVAC Blower Works Intermittently I have a 2003 Accord with the same problem. ... Just a failing blower motor? The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system.
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