If I get my blower motor replaced, do I also have to have my Ac recharged after replacing blower motor?
Heat went out in the car. Took it to the dealership, they said it was the blower motor. Paid to have it replaced. Upon picking the car back up the heat worked, but my Ac does not. Ac was perfectly fine upon giving them the car. Is it normal to have to recharge a Ac after replacing that part? Or did they mess something up? Their claiming it has nothing to do with what they have had to mess with to replace blower.
My car has 117000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
The blower motor on this vehicle is a simple removal and installation and does not require anything to be touched on the A/C. The refrigerant does not have to be removed. The only component that has to be removed is the glove box under cover to get to the blower motor.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
What is a blower motor? This is the part in your air conditioning system that controls the operation of your AC system and regulates the temperature in your vehicle.
Therefore, it is possible that your car is low on refrigerant that is preventing your air conditioning from working properly. This is the most common reason for why your car`s AC is not blowing cold air.
The average cost for a Nissan Altima Blower Motor Resistor Replacement is between $90 and $121.
MOTOR VS COMPRESSOR
To be clear, the AC motor is separate from the AC compressor. Some warning signs that the fan and motor assembly are in need of tender loving care include: A humming noise—This is often because of a bent or misaligned shaft or a poor electrical connection.
The blower motor is an important component of your air conditioner, and it needs to be in top-notch condition so as not to affect the comfort level and air quality of your home.
The blower fan is located in the inside portion of your air conditioner and is so named because it is responsible for blowing the air to the ductwork in your system which then allows for the distribution of the air throughout your home.
All furnaces are equipped with a reset button. They are generally red or yellow and are located inside the blower compartment. The reset button is a safety feature that will shut down the furnace when a problem is detected, often a hot or overheating furnace, before it trips the circuit breaker.
We do suggest that you replace the resistor at the same time. It may not be critical, but this will keep the system more uniform. The issue may even be related to the resistor. If you know that it is not related to the issue, then you do not have to replace it.
Signs of a Bad Blower Motor Resistor
Loss of HVAC fan control (total or certain speeds) The fan only works on its highest speed setting. No air coming from vents. Intermittent or inconsistent fan speed.
Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. “The most common cause is dirt accumulation due to lack of maintenance,” said Tom Beaulieu, president of Bay Area Services Inc.
Blowers operate at moderate pressure, with an air pressure ratio of 1:1.1 to 1:1.2, and fans move large volumes of air with little to no change in air pressure. Blowers direct air in a specific direction, while fans circulate air throughout a defined space.
The main difference between an air compressor and an air blower is the pressure ratio of each. An air compressor operates at a high pressure to volume ratio, while an air blower tends to operate at a low-pressure ratio. A compressor crams air into a small space which makes the air denser.
For most furnaces, your blower motor will be located in the base of the unit next to the air filter. For most ACs and heat pumps, it will be located inside the air handler (i.e., the indoor unit).
Why You Should Run the Blower Fan Without the AC. Constantly turning the fan on and off can cause wear and tear to your system, which can reduce its lifespan. Over time, this may cause more frequent breakdowns. To avoid this, it may be best to leave the fan on.
Your car`s blower motor is not only necessary for the operation of your air conditioner. Without a functioning blower motor your engine runs the risk of overheating.
Look for it first around on the exterior of your machine, especially along the bottom edge near the ground. An AC`s reset button is typically red and visible, so it should be easy to spot. If you don`t see a reset button on the outside, it could be located inside the unit behind the service panel.
Perhaps the most common cause of AC issues is clogged filters. Dirt, pet hair, pollen and dust can clog your filters. When filters get clogged, they begin to restrict the flow of air through your AC. The result is that the AC doesn`t cool your indoor air effectively.
Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.
Because at idle your alternator does not produce enough electricity to run the blower motor. If you give it just a little gas to increase the motor rpm. To a high idle it should then be producing enough electricity to run the blower motor without draining your battery.
Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically using a rotating lever, or electronically by the air conditioning system.
The blower motor resistor is designed to last for the car`s lifespan. In most cases, these resistors will wear out long before the car does. Usually, the wear that the blower motor resistor has is due to the constant use that it gets and the heat that it is exposed on a regular basis.
When a resistor fails, it usually gets charred or burns. As a result, it either stops conducting the electrical current/signal or does not resist the current flow.
The heating and air-conditioning system uses several resistors to supply the desired airflow by sending power to the blower motor.
The average cost to replace the blower motor resistor at a repair shop is between $44 and $55 in parts and $70 in labor costs, for a total cost of around $114 to $125. On the other hand, you can easily fix the blower motor resistor at home in about an hour (even if you`re a beginner) and for around $70.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
If I get my blower motor replaced, do I also have to have my Ac recharged after replacing blower motor?
ANSWER : The blower motor on this vehicle is a simple removal and installation and does not require anything to be touched on the A/C. The refrigerant does not have to be removed. The only component that has to be removed is the glove box under cover to get to the blower motor.
My car ac a year ago stopped working on settings 123 only works on 4 I did the research so I do know it is the blower motor an ha
ANSWER : In your application, there is a replaceable blower motor resistor block. The resistor block permits multi-speed operation of the fan. If some fan speed settings work, but not others, the first thing to do is test the resistor block with a volt ohmmeter. If you desire testing, and replacement, as needed, please request a blower motor/resistor block diagnostic and the responding certified mechanic will get this taken care of for you.
With regard to the A/C system, if gauge pressures (high and low) are normal when the system does operate, there are really only two principle possibilities for intermittent operation. One is circulating moisture in the system (due to a saturated dryer) which periodically freezes (and thaws) at the expansion valve and the other is a failure in the A/C control system, that is the clutch, sensors, and other electronics that control the compressor cycling. The cause of the problem can be readily found if you request an A/C system diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Blower motor resistor melted, replaced it turned on blower motor and it melted again in seconds.
ANSWER : The blower motor that is drawing too many amperes will melt the resistor and wiring. Anytime the resistor is melted you should replace the blower along with the resistor and connections that show any heat damage. If you need assistance with this, consider YourMechanic, as one of our mobile technicians can diagnose electrical issue and help you replace the blower motor and resistor as necessary.
replaced ac relay and recharged ac which worked for a few days. Also can hear clicking from actuator in glove box. Any suggestions
ANSWER : If the A/C system was working properly (producing cold output) and then just "suddenly" stopped, broadly there are two possibilities: 1) you have a leak and consequently the refrigerant level is too low; or 2) the refrigerant charge is undisturbed (no leak) but for some reason the compressor has stopped functioning. If you request an a/c inspection/diagnostic, the bottom line is the responding certified mechanic will get it resolved quickly but here is an indication of some of what’s involved in diagnosing this. Using pressure gauges one first determines if there is any charge at all in the system. If there is a charge, you can attempt to command the compressor on and then see if high and low side pressures look reasonable (in range). If the pressures are good and the compressor does function, you move on to see why the clutch is not engaging when YOU command the A/C on via the switch at the dash. If, however, the mechanic cannot directly activate the clutch and get the compressor to even run, that typically means the compressor clutch is bad. Sometimes the clutch can just be changed on the car, so no big deal and you don’t even have to "open up" the a/c system. Other possibilities include a faulty low or high side safety switch which fault also prevents the compressor from starting. If you request the a/c inspection/diagnostic, the mechanic will resolve this. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
When replacing the AC Compressor, do I need to replace both expansion valves as well or just the front
ANSWER : Hi there. Anytime you replace major air conditioning system components like the AC compressor, it’s recommended to purchase all supporting hardware and replace it at the same time. AC works as a series of individual components working efficiently together to create cool air that flows into your cabin. As such, if you’re replacing the front expansion valve, it’s a good idea to replace the rear at the same time. This increases overall efficiency of the system, reduces the potential of small component failure and allows the parts you replaced to last longer.
AC blower motor not working
ANSWER : A vehicles A/C system and the vent system are two separate systems that work together. The blower is simply a fan that is controlled by the speed switch on the dash. The voltage from the switch is routed to a set of resistors that regulate the voltage. The more voltage the motor gets, the faster it goes. If the resistor pack burns out, the motor will not work. It is possible that only some of the resistors burn out. If this is the case, the blower will operate on low on some fans but not on the others. The high level usually does not go through a resistor. This means that if the blower doesn’t work on high either, it is probably not the resistors. In this case the blower might be faulty. Consider seeking help from a qualified mechanic, such as one from YourMechanic, to help you diagnose your A/C issue and suggest an appropriate repair.
Is a transistor and a blower motor resistor the same thing?
ANSWER : When you were told to replace the resistor or the transistor the person that told you did not know if you had manual or automatic a/c. Your car will have a blower resistor for manual a/c blower controls and a transistor if you had automatic a/c controls. Your blower control is manual and therefore you have a blower resistor. The car will only have one or the other and will serve the same purpose depending on the type of blower control you have. The squeaking and burning smell may be from the blower motor. I would recommend replacing the blower motor with resistor(https://www.yourmechanic.com/services/heater-blower-motor-resistor-replacement) This should fix your problem and do not have to replace blower transistor since your car does not have one.
2007 Nissan Altima motor mounts are new the motor vibrates a lot went the car is in drive with the ac on went I turn the ac off it
ANSWER : Hi there. It is possible that you have a vacuum leak or perhaps the transmission mounts are loose, as usually these symptoms are common with worn out motor mounts. When the AC is activated, it does create additional drag on the motor, which can make a small vibration even worse. It’s probably a good idea to have a professional mechanic come to your location and try and replicate the symptoms you are describing by completing a car is shaking or vibrating inspection.
