How does the blower motor work on a Honda Accord?
Typically it can be activated by pressing and holding different buttons. Testing Honda power transistor (blower motor control module). For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON.
What’s the pressure on the air compressor in a Honda Civic?
This time, I revved the car up to about 1,500 to 2,000 RPM (since the Civic seems to idle at around 500 rpm). Sure enough, he said that the low pressure was being sucked down to about 20 PSI and the high-pressure was kicking way up again past 400 PSI.
Why is my air conditioner compressor not turning on?
The most common issue is that the refrigerant is liquid instead of gas when it gets to the compressor inlet. Under these circumstances, the compressor may still run, but the air conditioner won’t cool the air. Fortunately, replacing the broken valve or valves usually resolves the problem.
Why is my AC not working in my car?
If you do not feel any air or if you only feel air coming through the vents on certain settings, the problem may lie with the AC’s blower motor or the blower motor resistor. Sometimes blower motors and/or their resistors will fail and stop pushing both hot and cold air through the vents. Step 3: Check the strength of airflow.
Why is my Honda Accord blowing warm air?
Here’s a few you can book directly with. A/C was blowing warm air, intermitten at first, then just warm air. Had a/c compressor, receiver drier, replaced. At the time hoses, condenser, evaporator were said to be fine. Worked fine for 3 months, but it didn’t seem to get as cool as before.
What does a Honda air conditioner compressor do?
A drive belt connected to the crankshaft on the engine is what the compressor is powered by. When you turn on the air conditioning system in your Honda, the compressor uses high heat and high pressure to pump out refrigerant vapor.
How much does it cost to replace AC compressor in Honda Accord?
The average cost for a Honda Accord AC compressor replacement is between $1,016 and $1,072. Labor costs are estimated between $213 and $269 while parts are priced at $804. This range does not include taxes and fees, and does not factor in your specific model year or unique location.
What should I do if my Honda Accord AC system is not working?
Clamp the refrigerant canister hose onto the low pressure intake in the AC system. If the clamp does not easily attach to the low-pressure intake, do not force it, double check that you have the OEM A/C system in your Honda Accord, and that the clamp is not damaged.
Why is my Delta 88 heater fan not turning on?
My 1999 Olds Delta 88 heater fan switch turns blower on only occasionally and even then the high setting cuts off the fan (if it’s working). Probably a bad blower motor resistor you have there, or possibly a faulty blower motor or switch. The most common thing would be the resistor assembly, as that goes out more often than the other parts.
Why does my blower fan keep shorting out?
To do this, there are resistors built into the unit to control the voltage. If you are not familiar with how electricity works, basically it comes down to this…resistance causes heat. This heat, over the years, can end up burning up and shorting out the blower resistor and associated wiring.
Why is my Honda radiator fan not working?
If the radiator fan begins working, this is an indication that the fan relay is bad. If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot.
Why does my Honda Accord run with only one fan?
The thermostat operates the ac in probably 30 second on off cycles. This is why it would be stopping and starting. Some cars have 2 fans . All cars run hotter with the ac on. You will find, a vehicle with 1 fan, will probably run all the time with the ac on, even from a cold start up.
My 1999 Olds Delta 88 heater fan switch turns blower on only occasionally and even then the high setting cuts off the fan (if it’s working). Probably a bad blower motor resistor you have there, or possibly a faulty blower motor or switch. The most common thing would be the resistor assembly, as that goes out more often than the other parts.
What’s the problem with my blower motor fan speeds?
Probably a bad blower motor resistor you have there, or possibly a faulty blower motor or switch. The most common thing would be the resistor assembly, as that goes out more often than the other parts. A quick check with a test light can determine failure. No Heat In My 2000 Chevrolet Malibu – Blower Not…
Why does the a / C fan stay on longer?
The A/C fan will start to stay on longer as the pressures rise in the high line for temperature exchange. The other will cycle as engine temps rise and fall. 42 people found this helpful. The thermostat operates the ac in probably 30 second on off cycles. This is why it would be stopping and starting.
Typically it can be activated by pressing and holding different buttons. Testing Honda power transistor (blower motor control module). For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON.
Why does my AC blower motor not work?
The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently.
Why is the resistor not working on my blower?
Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all.
What are the symptoms of a worn out blower motor?
One of the symptoms of a worn out blower motor is that it can intermittently produce a loud screeching noise when running. How to test a blower motor? If the blower motor doesn’t work at all, the blower motor itself must be tested first. Typically it’s done by measuring the voltage at the blower motor connector when it’s turned on.
How can you tell if a fuse has blown on a Honda Accord?
Determine from the chart and, or the diagram on the fuse box lid, which fuse or fuses control that component. Check those fuses first, but check all the fuses before deciding that a blown fuse is not the cause. Replace any blown fuses and check the component’s operation. Turn the ignition switch to LOCK (0).
What causes a bad or failing blower motor relay?
Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…
What causes a fuse to blow on a blower motor?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current…
Where is the mode control motor on a Honda Accord?
Locate the mode control motor. The mode control motor changes how air travels through the system, depending on which mode you’ve selected. It is on the driver’s side under the instrument panel, and on the left of the heater case. The blower motor is on the right of the heater case. The mode control motor should be parallel to the left fender.
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
Why does the blower speed Hi stop working?
‘HI’ is the only blower speed that doesn’t depend on the blower resistor to function. When the blower motor resistor fails, 1 of the 3 or all 3 first speeds stop working. 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.
What does hi stand for in blower motor?
M2 (medium 2). HI. The reduction in blower fan speed is accomplished thru’ resistors (inside the blower resistor assembly). ‘HI’ is the only blower speed that doesn’t depend on the blower resistor to function.
Where does the ground go in a Honda blower motor?
The blower motor control module (Honda calls it Power Transistor) supplies the ground. The power transistor has 4 wires: two come from the climate control system control unit, one is the ground, one goes to the negative terminal of the blower motor.
Why does my Honda Civic blower not come on?
This test result tells you that the blower motor is OK and that the reason it’s not coming on is due to a possible problem with the blower motor resistor (known as the power transistor). Thankfully, you can test your Honda Civic’s blower motor resistor and thus be absolutely sure that it’s fried and behind the cause of the ‘no blower’ condition.
How to test Honda Civic blower motor resistor?
The following step-by-step tutorial will show you how to test the blower motor resistor (power transistor): Blower Motor Resistor Test (2001-2005 1.7L Honda Civic). CASE 2: The blower motor DID NOT come on when you turned the key to the On position. This test result tells you that the blower motor is fried and needs to be replaced.
Where is fuse # 12 on Honda blower motor?
Fuse #12 connects to relay terminal slot #3 of the under-hood fuse box. The blower motor relay activates (since relay terminal slot #1 is always connected to chassis Ground).
How does a high speed blower motor work?
In the highest fan speed state, the blower resistor is bypassed completely and the fan is effectively connected directly to the car’s battery, allowing maximum current to be supplied to the blower motor.
Where to buy Honda Accord a / C switch parts?
Shop AutoZone for Honda Accord A/C Switch. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only
What are the symptoms of a failed blower motor resistor?
Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.
How is the speed of the blower motor controlled?
The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.
Why does my blower fan only work on one speed?
by Lee Sallings. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. This can be annoying, but troubleshooting is easy. If you start at the blower motor, and check resistance in the circuit, you will find the problem in no time.