Blower Motor Not Working On Any Speed

Aston Martin had to make some concessions for the 7-speed manual to work with the torquey V-8. Fan blower motor not working (not the resistor). If you really want to check if the rebuilt blower motor is working, connect the battery positive and negative terminals direct to the blower motor. Initiative 976, which will be on the November 2019 ballot statewide, would repeal or remove certain vehicle taxes and fees, and limit state and. Is there any other advice you have for me or other testing to be done to be certain it is the control head that is bad. I have a 2007 Sierra Classic (2007 year model, but 2006 body style). At first, I thought that the problem was in the fan speed switch because I've seen this problem before and when I told my electrician about it, he disassembled the switch and tried to clean it. Many, many times a car or truck will come into the shop with the customer complaining that their blower motor doesn't work, or only works on high speed, etc. A buddy of mine tried to get me in a new car today and while leaving the lot the blower speed was erratic at best but no bearing noise. Hold it firmly and be sure you are clear of the impeller as it could hurt you pretty easily. I checked the voltages and continuity between the various components and all seem ok though I do not have a wiring diagram to be sure. Other symptoms include occasional sudden blower motor speed changes without driver's input or the inability to regulate the blower speed at all. I checked it and the little light on the A/C selector lights up. Today's technology, while being more expensive to purchase upfront, can pay for itself over time in energy savings by increasing efficiency. No warning. All speeds were available and it was blowing cold air before the malfunction. 5 370 Volt capacitor (not included). Symptoms of a Bad or Failing Blower Motor Switch Yourmechanic. Randomly, the Front Blower Motor will stop moving cold air. The blower motor resistor is like 20 bucks, switch it out and see what happens. I checked the 15 amp fuse in the main fuse compartment - its OK. 8tQ all of a sudden yesterday the digital AC controls kinda went on the fritz, the blower isnt blowing no matter what the fan speed is on, you can watch the display bars for the fan speed run up and down and then sit for a while and do the. When ignition key is turned, condenser fans start immediately. I have unfortunately already replaced the blower motor no change Any quick way to check if its the regulator under the blower or the control unit in the cabin withoutv taking it all apart. Blower Motor Resistor Repair – Heater Fan Speed Control – Chevy Blazer GMC Jimmy S10. Cadillac GMC Chevy Suburban Yukon XL Silverado Sierra blower motor module. The position listed below is not with Rapid Interviews but with NTB Our goal is to connect you with supportive resources in order to attain your dream career. If you are the control board is OK and probably the blower motor is bad or the capacitor is weak or bad. Blower speed select switch does not work at any speed. We work directly with hundreds of publishers to connect you with the right resources to fit your needs. 5 370 Volt capacitor (not included). Recently the fan on my 2001 TJ stopped. If power is present on the fan’s terminals and the fan is not working, the blower fan is defective. any ideas what to look for next? All other speeds work fine. It could've stopped working. I checked the fuse it's a 40 amp fuse and I checked it with an ohm meter. The vehicle operator determines the blower motor's speed by placing the blower motor switch in a desired speed position or by selecting automatic operation. Your Jeep's blower motor forces air into your car by spinning at the speed set by the blower motor control switch inside the cabin. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. When I started back up to leave, the fan was dead. It is a 5 minute fix. Re: Blower does not work at any speed. Last week none work. If it has any bearing, when I first replaced the blower unit I'd not got it on properly and there was a bit of blowing then a scraping noise then it stopped. The technician stated that the failure was known by the manufacturer who diagnosed that the blower motor speed and mode selection continued to function; however, the heater would not be available. Without a Ford F150 Blower Motor Resistor in the car the heat and A/C systems cannot blow well. Very dry and not a leaker! Tires are matching 31 x 10. Why Blower Motor Won't Blow - Simple Troubleshooting Tip Link the additional help with your Mercedes heater blower motor: Silverado Heater A/C Blower Motor Not Working. Replacing the controller. Have a question? My blower motor does not work at any speed but if you jump voltage to it it does. The rear works fine but the front blower will not work on any setting. This blower motor has versatile mounting for direct drive and has reversible rotation. I recently ran into a similar situation. If you verify the motor is ok then the trouble is either with the switch or the resistor pack. If I turn off the blower delay and turn on the heat the blower speed goes way up, but the blink speed doesn't change. Jump to Latest Follow 1 - 20 of 20 Posts I won't be able to change the blower speed but it'll do for now. High blower speed has direct power to the motor from the switch. But, do you get any air flow at all when it wasn't working? I mean through any of the vent settings? And did. All speeds except high speed work? I assume when you checked/replaced your switch that you checked the connections and wires? How are the connections at the relay? i posted a schematic for this in another thread. The resistor is located under the passenger side glove box. When I turn on the control knob I can hear a noise in the glovebox like its trying to work, the fan behind pollen filter turns freely and when ignition on it turns slowly on any setting. The 2004 Chevrolet Colorado has 14 problems reported for blower not working on all speeds. This interruption and diverting of battery power goes on for all of the other blower fan speeds. A buddy of mine tried to get me in a new car today and while leaving the lot the blower speed was erratic at best but no bearing noise. Outside Temps above 90 degree F. The blower motor quit working all of the sudden the other day. Oxley and Papazoglakis’ new "Stealing Speed" is much more than a comic book with a hard cover. i've been searching the archives, and it seems that if you lose the lower speeds that the blower resistor needs to be replaced. 5 370 Volt capacitor (not included). I replaced the blower switch and the blower relay. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). In the event that you do not have a varying voltage on the purple w/ white wire while adjusting the blower speed then the control head is probably bad, but it really should be checked with a scan tool like the GM Tech 2. I have a 2007 Sierra Classic (2007 year model, but 2006 body style). Your Jeep's blower motor forces air into your car by spinning at the speed set by the blower motor control switch inside the cabin. Over-heating can be caused by a dirty blower wheel, dirty evaporator coil (stopped up) slow blower motor, (might need to move to a higher speed or need a new run capacitor) duct work that is too small or a gas valve that is adjust too high allowing too much input BTU’s to be burnt in the heat exchanger. 1A Auto has a large selection of HVAC Blower Motors for many makes and models, and ground shipping is always free!. I know that was standard for cars without AC but my blazer has AC so I was expecting it to go to off. The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Heater/AC blower stopped working all together. The front blower does not work no matter what speed I set the fan switch to, however the rear one does work. I read that it could be the blower resistor if the fan only works on high setting but this one doesn't work at all even on the new motor, should I try. If there is voltage all the way to the motor then check the ground wire from the motor. Hi Paul, Normally bearings are sealed for life on any electrical motor. No matter how many times (or position) the fan speed knob is moved, the front blower motor fails to respond. I have only ever replaced the blower motor, never the resistor or any of the fuses, etc. Vehicle is being driven in the city, all systems appear to be normal. Usually if your blower motor will work on high but not any of the other speeds then the blower motor speed resistor is at most likely fault. also found burt wire to resistor connector. This time, he instructs us on how to solve the problem of the Blower motor in Saab 9-3. Blower motor only runs at one speed meaning when you increase the speed of your A/C or heat, it still blows at one speed only. If you have a 2005-2011 Toyota Tacoma with a concern that the air conditioning blower motor only works on the High speed setting, then you will want to look into replacing the blower motor resister and it's wiring harness. Today’s technology, while being more expensive to purchase upfront, can pay for itself over time in energy savings by increasing efficiency. not all speeds on blower motor work 3 Answers. It would be a good idea to also replace the blower motor itself as they usually overheat and. Cadillac GMC Chevy Suburban Yukon XL Silverado Sierra blower motor module. And there's even a small chance that there might be a problem with the AC control head that sends the signal to the AC blower control module. In some cases, the blower motor will not work at all. Blower motor does not turn ON. Last week none work. Long time since my last post, Been working a lot lately trying to do some things to my truck. Wondering if anyone has had this problem and how to fix. If it's good then the blower motor is bad. One should have +12V. The front blower does not work no matter what speed I set the fan switch to, however the rear one does work. If you are the control board is OK and probably the blower motor is bad or the capacitor is weak or bad. Manually toggling the fan speed to lower settings will reduce the voltage reading. The connector and harness may show signs of overheating. One should be ground/earth. With it plug in I do not see any voltage on the dark blue wire until the fan. When it does come on the fan speeds work so that makes me think it's not the FSU or the control unit. Another common symptom of a faulty blower motor resistor is a a blower motor that does not function on certain settings. Has anyone had any issues like this and if so, what did you find? Where is the blower motor located? Also, is it likely for the fan speed switch to have failed? However, the fan wont work on any speeds. Your blower motor is usually found below the car's dashboard; if it is not functioning, your heating and air conditioning will not work correctly. If the fan operates at some speed settings, but doesn’t work at some other speed settings, this means that the blower resistor is faulty and should be replaced: Find the blower resistor and detach it from the rest of the circuit. Normally when it is the resistor the fan will still blow on high speed. Vehicle is being driven in the city, all systems appear to be normal. Problem this time is no blower speed functions at all. My blower motor is not working after I replaced it. 7 million cars. Here in the United States, we sometimes assign the term "graphic novel" to any high-concept comic book. Your Jeep's blower motor forces air into your car by spinning at the speed set by the blower motor control switch inside the cabin. Power loss. Bunk blower motor works. Is relay and fuse good?. I should have clarified a little further. If you hear that the blower motor is operating but don't feel any air flowing through the vents, the problem is with the airflow. Re: Blower does not work at any speed. Blower resister failed a few years ago, but would work on high (4) back then. You have power to the switch, vent controls are working, rear de-ice is working, but blower is completely dead. Although it's tempting to go ahead and buy the replacement part without performing any diagnosis it's not recommended. It only works on high speed (Option 4). The blower motor plays an extremely important role in forced-air systems. The blower motor resistor or blower module gets hot as it powers the fan so, often times, they can burn out causing certain speeds of the fan in your car to stop working, the fan can be stuck on one speed, only work on high speed, or not work on any settings. It will attempt to run at the frequency of the supply, this is the basic method of how a induction motor works, if due to insufficient current for the rotor to maintain the normal RPM, the rotor will lag dependent on friction and inertia of the rotor. But there was no change in voltage when I change the blower speed on the dashboard. In fact it has a magnificent seven motor sport-inspired. This is usually the case after a blower resistor failure on one or more speed settings. Owners may experience an intermittent heater blower fan, on one or more of the speed settings, or the fan may not work all, or only on full power, or may be stuck on full power. As more resistance is applied to the circuit the slower the interior fan motor will spin. Look at where the wiring comes out of the top of the box where the blower motor is located. Blower Motor Not Working On Any Speed? One of the common luxuries most cars have these days is an air conditioner. There is a possibility that the blower motor itself is the root cause. You can hear it want to speed up and slow down faintly sometimes. It can be replaced (soldered in) with a part from Radio Shack for about $1. The blower motor relay is the electrical switch that is used to supply the power for the vehicle's blower motor. The car manual gives location of all fuses and what they are but not the relays. If you suspect your final stage is failing, look for the following symptoms: Blower motor speed fluctuates from high to low. Which is getting very annoying in this cold weather. Any suggestions to remedy the fault ?. I actually did have the same issue on an older carrier high efficiency furnace a few weeks back. In BMW cars, the blower motor resistor often overheats due to incorrect current measurements implemented during the design and engineering of the vehicles. Before I bought a new motor I bench tested the motor and it worked fine. Switch the low blower motor relay with the high blower relay. This blower motor has versatile mounting for direct drive and has reversible rotation. Please, if anyone knows any helpful information as to where i can get a A/C Blower Motor Linear Controller please e-mail me t david. Very dry and not a leaker! Tires are matching 31 x 10. 7 Dodge Dakota JOIN HERE 12/11/2011 11:58:13: RE: Blower Motor dead IP: Logged Message: Check the panel on. “Drivers will not see any new signs up tomorrow (Friday) or any changed speed limits tomorrow,” said Cody Boyd, a spokesman for the Oklahoma Department of Transportation. An unclean and blocked filter makes the motor work harder to push out air. Blower Motor Resistor Repair – Heater Fan Speed Control – Chevy Blazer GMC Jimmy S10. my blower motor just stopped working I changed the resistor but still it wont work also im not getting power to the resistor when I check for current with a tester I also changed the climate control switch assembly still nothing the blower motor moves freely if spun by hand I don't hear any noise coming from blower motor when its spinning its on a 2017 ford transit 250 with a. In reality this condition renders the rest of the fan speeds inoperative, thus causing undue wear and tear on the auto parts involved, not to mention discomfort to the driver and passengers. Pretty compactly installed. Because the blower didn't want to work initially on any speed, I would suspect something in the lower speed circuit. So I bought that for $120 (no returns or refunds from a dealer) installed today and is did not work. And as I said, motors are a fraction of the cost of the sealing products and changing the unit. We work directly with hundreds of publishers to connect you with the right resources to fit your needs. I have a 2000 grand am gt and speeds 1 and 2 do not work on the blower motor for the heater. In some cases, the blower motor will not work at all. blower motor not working it was making a weird noise when i turned it on then it quit working. This blower motor has versatile mounting for direct drive and has reversible rotation. If you really want to check if the rebuilt blower motor is working, connect the battery positive and negative terminals direct to the blower motor. I didn't get the smoke and burning plastic smell but my blower motor shit the bed on my 98. 2 Elite, pollen filter fine, no water in footwell. 9 Amp Max 6. If you suspect your final stage is failing, look for the following symptoms: Blower motor speed fluctuates from high to low. Owners may experience an intermittent heater blower fan, on one or more of the speed settings, or the fan may not work all, or only on full power, or may be stuck on full power. blower motor not working. I also pulled the speed selector. If for whatever reason it may not work as I want it, its a much cheaper expense. I have a 2000 Grand Am and speeds 1-4 work fine but speed 5 does not work. This month we witnessed the era of the truly affordable. #1 check the fuse. In each case there should be continuity. If the fan shuts off too soon or comes on too early, much of the. 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. But, do you get any air flow at all when it wasn't working? I mean through any of the vent settings? And did. I'm not too familiar with Kia's. One should be ground/earth. The position listed below is not with Rapid Interviews but with NTB Our goal is to connect you with supportive resources in order to attain your dream career. If the blower doesn’t work at any speed then the trouble may be a stuck or bad motor. If you do not then you either have a thermostat problem or a wiring problem. Start by checking the blower fuse and HVAC controller fuse. The air conditioner still works because I can feel a little cold air coming from the vents when I hold my hand up to it. The front AC Blower is not working. The resistor is bypassed at high speed because the blower motor gets the full 12 volts. With winter in full force now, problems with blower motor can make it extremely difficult to use your car. While the ECM is attached to the motor in the picture, the ECM does not work. I know this has been an issue for you for a while now,but are you sure you removed and replaced the right fuse? It almost sounds as if your blower motor is locking up. To explain this a bit further, this is due to the nature of how a resistor reduces the voltage that passes thru' it by converting some of it into heat. Symptom: Blower motor not working at all on any speed setting, and it never works at all. A faulty resistor loses power at different positions on the switch. 7 engine the high speed doesnt work on the fan, replaced the blower motor resistor. Blower stopped working last Thursday, It came back on Friday after I wiggled the blower motor resistor, went back out Saturday. The blower motor resistor or blower module gets hot as it powers the fan so, often times, they can burn out causing certain speeds of the fan in your car to stop working, the fan can be stuck on one speed, only work on high speed, or not work on any settings. 4 Steps To Troubleshoot Furnace Blower Motor Fan And Repair Replacement Guide When it comes to the cooler months of the year, heating becomes essential and if, after not being used for some time, you go to turn on your furnace heater, only to find that no heat or air comes through the vents, then, as explained in the HVAC Blower Motor Guide. With ignition set to ON, I connected a test light across the power connector to the heater blower. Half of fixed speed cameras not working. The run capacitor for the blower should be checked with a capacitance meter and replaced if it is below 90% of the rated value. I turned system off and will try turning on the fan in an hour. Long time since my last post, Been working a lot lately trying to do some things to my truck. Make sure you check and clean the filter regularly to avoid this kind of problem from recurring. I tend to think it is the blower motor itself as opposed to the switch. Motor Humming Without Turning. also found burt wire to resistor connector. When I typed a description of the problem in my favorite search engine, the number one result said. I turned system off and will try turning on the fan in an hour. When the blower motor resistor fails on your GMC pickup or SUV, the blower motor will only work in one speed and in a few cases not at all. HVAC Variable Speed Motors | Common Air Handler Problems. if the setting is on fresh outside air the air flow. Mine did this to me last winter, it would not work on speeds 1,2, or 3, but worked fine on 4. The blower motor quit working all of the sudden the other day. A/C Blower Stops Working Or Slows Down - I replaced Motorcraft YH-1829 A/C Blower Motor Switch resister under dash and problem with blower turning off or not blowing at full speed stopped. Review By Rick Becker Charisma Audio is a Canadian importer and distributor that has been on the scene there since 2000. So, to troubleshoot, check for broken coils on the blower motor resistor. In each case there should be continuity. This can cause the HVAC fan to not work at all due to motor failure, and it is unable to blow any air out of the vents. Lights on control head work, rear defroster light works. The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Here's the part #, 5066552AA. Pretty compactly installed. Is there any other advice you have for me or other testing to be done to be certain it is the control head that is bad. I have a 2000 Malibu and am having some trouble getting my blower motor to work at all speeds. So, to troubleshoot, check for broken coils on the blower motor resistor. It could've stopped working. When I unplug the motor, the dark blue wire has twelve volt on it when the car is in the on position, and the fan selector is in any position other than off. Aston Martin had to make some concessions for the 7-speed manual to work with the torquey V-8. The connector that plugs into the blower motor under the glove box became too hot and melted the plastic resulting in the a/c and heat not to work (this includes the windshield defroster). 5 volts DC to the fan. I guess the next step is to test the blower motor itself. I am thinking maybe a relay but not sure as the fuse is good. I would not assume it is the blower motor until you have ruled out other things. I was hoping to find out which relay is for the A/C blower motor. How to fix Jeep Liberty blower motor (resistor) - with pictures October 22, 2011 / 209 Comments / in Instructions / by brmorris I have a 2004 Jeep Liberty and the blower motor fan for the heat and air conditioning over time has gotten weaker and weaker to the point of setting number one not even working anymore. blower motor not working it was making a weird noise when i turned it on then it quit working. This is a discussion on blower motor not working within the RAM 1500 Diesel General Discussion forums, part of the RAM 1500 EcoDiesel Forum category; Two days ago the blower motor on my 2014 ED quit. I can not get my blower motor to work on any speed I have added a video on youtube here is the link https:www. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse. This 2003 Chevrolet Silverado came in with the complaint that the blower did not work on any speed. Check the furnace flame for a complete blue color. no high speed blower. All fuses ohm fine under hood and under rear seat - Answered by a verified Chevy Mechanic. Fueses good, put 12 volts and ground to motor,runs, relay good, power to switch good, contenuity from switch to relay good, installed new switch same results no blower. Also see Technical Service Bulletin 0149-11. The resister block used on many models is coupled with a control module. The front AC Blower is not working. Any ideas what part I need to replace. In reality this condition renders the rest of the fan speeds inoperative, thus causing undue wear and tear on the auto parts involved, not to mention discomfort to the driver and passengers. It is behind the glovebox on top of the heater plenum. It only works on high speed (Option 4). The company’s latest creation is called the Jackal, and depending on your off-road ambition – not to mention your bank account – you can have a Bow Tie pickup that merely looks cool with a. My symptoms include the fan not working on any position but when I give the blower motor a gentle tap it kicks on. Heater/ac fan does not work on any setting or speed. Simply check your service manual for the location of the fuse and test it using a. There are 2 wires going to the fan motor. splain that. I was hoping to eliminate all the relatively easy possible fixes before calling in at the Fiat center. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). If you measure the voltage, I was getting 13. The position listed below is not with Rapid Interviews but with TBC Corporation Our goal is to connect you with supportive resources in order to attain your dream career. A/C Blower motor does not work on any speed at all. Power loss. Now a skinny little guy could get to it rather easily, but for a big old fat guy like me (59, 6'6", 325lbs) that isn't at all limber - not so easy. Initiative 976, which will be on the November 2019 ballot statewide, would repeal or remove certain vehicle taxes and fees, and limit state and. 2 screws hold it in place and costs about 15 USD. On AZC systems, the blower motor switch is just one of many inputs to the AZC control module. 5 is the only speed that is affected if that fuse is blown. I would not assume it is the blower motor until you have ruled out other things. Replace the motor. If the blower doesn't work at any speed then the trouble may be a stuck or bad motor. Hello I have a serious problem with my 1995 Deville. I've checked the fuse in the dash fuse panel and it is good. The blower motor stopped working in my '05 Pontiac Grand Prix. I was under the impression you TESTED it. Many, many times a car or truck will come into the shop with the customer complaining that their blower motor doesn't work, or only works on high speed, etc. If the blower motor works on lower speeds than I wouldn't think that your problem is there. If you really want to check if the rebuilt blower motor is working, connect the battery positive and negative terminals direct to the blower motor. I don't really care that it runs all the time but I would really like to have it working on high since summer is coming and I don't want to roast. Replacing the controller. #1 check the fuse. I have read a lot of posts that talk about the blower motor resistor is bad or has burned up. On all systems, a failed blower motor is least likely. Hi Paul, Normally bearings are sealed for life on any electrical motor. Here's how you can diagnose if this component. Heater blower motors come in two or three varieties. … The post The 1000-Horsepower Club appeared first on autoNXT. When I typed a description of the problem in my favorite search engine, the number one result said. But, do you get any air flow at all when it wasn't working? I mean through any of the vent settings? And did. checked fuse #3 on the LH dashboard- is good 2 checked fuse #10 Instrument panel, climate system, power driver's seat-is good. Have a question? My blower motor does not work at any speed but if you jump voltage to it it does. Common Problems with Blower Motors. If the blower motor works, and fuses are good, replace the resistor. Which is getting very annoying in this cold weather. Let's start from scratch here. Aston Martin had to make some concessions for the 7-speed manual to work with the torquey V-8. Autozone wasn't much better on either one. The front blower does not work no matter what speed I set the fan switch to, however the rear one does work. This article series discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working. Hi, the blower stop working on all speed on my 1995 camry. Welcome to the September 2019 edition of Electric Vehicle [EV] company news. XC70 2006 blower motor is not working when I started the car after one week in the garage. During a conference call with analysts. I replaced the blower motor and resistor about 6 months ago do to the known water leak with the seal below the windshield. I have checked fuses, and couldn't find any problems. Sometimes you can verify a bad blower motor with a rap from a screw driver handle on the bottom of the blower motor when it's not operating but the ignition key and blower switch are 'ON'. The blower motor plays an extremely important role in forced-air systems. There still is not a hot mark on it. So far I have replaced the blower motor, blower motor resistor, blower motor resistor connector, fan switch and fan switch connector and still I do have any fan speeds. Like many other parts in your Jeep, the electrical motor is susceptible to wear and tear as well as possible failure throughout the years. On AZC systems, the blower motor switch is just one of many inputs to the AZC control module. If its package unit, it’s located outside with other. 50's on very nice wheels Overall this Jeep is FAR FAR FAR cleaner than any midwestern Jeep. Good chance that the blower motor speed resistor needs to be replaced and the high speed blower relay has gone bad. When I remove the Blower Resistor, there are 3 wires. All speeds except high speed work? I assume when you checked/replaced your switch that you checked the connections and wires? How are the connections at the relay? i posted a schematic for this in another thread. Speeds 1-4 are on a separate fuse and power goes through a resister. I applied 12Volts to the heater blower motor directly and grounded to battery and the blower turned on at full speed. 4 Steps To Troubleshoot Furnace Blower Motor Fan And Repair Replacement Guide When it comes to the cooler months of the year, heating becomes essential and if, after not being used for some time, you go to turn on your furnace heater, only to find that no heat or air comes through the vents, then, as explained in the HVAC Blower Motor Guide. Does not include a working electronic control module (ECM). Recently the fan on my 2001 TJ stopped. Blower motor does not turn ON. If the motor turns, the connector is bad. If the central air conditioner unit is making sound and the sound is from indoor. The resistor is bypassed at high speed because the blower motor gets the full 12 volts. Page 1 of 2: How to Test the Blower Motor Switch (Ford 4. On all systems, a failed blower motor is least likely. Many Citroen C4 and C5 owners have experienced a problem with the heater blower not working properly.