What should I do if my Jeep Wrangler blower is not working?
Jerry – You had mentioned that if the blower fan simply didn’t work at all you should look into replacing the switch plug. I have replaced the switch and the resistor and still no fan. Both of the fuses (behind the glove box and under the hood) appear to be working. Where can I find the blower fan to test it? Newbie Jeep owner here – 2000 TJ w/2.5.
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.
Where does the power go in a blower motor?
For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.
Where is the resistor pack on a 1997 Jeep Wrangler?
Knows a couple things… The ’97 TJ’s resistor pack is up above the passenger-side footwell, screwed to the HVAC plenum with two screws. Remove the kick plate to gain access to that area. I wouldn’t be surprised if you find some melted wiring leading to the resistor pack, that’s a common issue with early TJs.
Jerry – You had mentioned that if the blower fan simply didn’t work at all you should look into replacing the switch plug. I have replaced the switch and the resistor and still no fan. Both of the fuses (behind the glove box and under the hood) appear to be working. Where can I find the blower fan to test it? Newbie Jeep owner here – 2000 TJ w/2.5.
What happens when a blower motor resistor fails?
If you’ve replaced a blower motor resistor and that replacement has failed, it’s time to conduct an amperage test on the blower motor. If the amp draw exceeds manufacturer’s specifications, replace the blower motor. can also cause an overheating condition. In some cases, the heat is so high that it melts the connector.
For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.
Knows a couple things… The ’97 TJ’s resistor pack is up above the passenger-side footwell, screwed to the HVAC plenum with two screws. Remove the kick plate to gain access to that area. I wouldn’t be surprised if you find some melted wiring leading to the resistor pack, that’s a common issue with early TJs.
Why is my Jeep Wrangler heater not working?
While there are a variety of reasons your Jeep Wrangler heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Get your Jeep issue diagnosed by a professional.
What are common reasons my Jeep Wrangler has air conditioning problems?
What are common reasons my Jeep Wrangler has air conditioning problems? While there are a variety of reasons your Jeep Wrangler air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
Do you need bump stops on a Jeep Wrangler?
If you have a 2018, confirm that you have a JL or JK. Don’t see your Wrangler Year? Just because you’ve lifted your rig doesn’t mean bumping is something you have no choice but to accept. 1997-2006 Wrangler Bump Stops put an end to the situation so you can spend your time worrying about more important things.
Why does my Jeep Wrangler shut down while driving?
If your Jeep Wrangler is shutting down while driving, it’s a real safety hazard. Vehicles are a lot harder to control without power brakes or steering. Directly below is a list of the most common reasons why your Wrangler would randomly die while driving. It may help you in your diagnosis.
Why does my Jeep Wrangler keep running out of fuel?
Another common reason that your Wrangler may be starving for fuel is a bad fuel pump. The fuel pump is responsible for sending highly pressurized fuel to the fuel rails. The engine can die if the fuel pressure is not high enough to properly atomize the gasoline properly.
Where can I find a wiring diagram for my Jeep?
You can access them on line here: Jeep Information Center, Jeep Parts Catalog, Jeep Repair Manual & More Click to expand… Thanks. I appreciate it! You probably missed the 3 wire connector on the back of the mode switch. Check here for troubleshooting the circuit. You probably missed the 3 wire connector on the back of the mode switch.
Where does the power go to the blower relay?
All of this assumes you have power to the blower motor. The panel does not power the relay. Fuse 8 behind the glove box does that. When the relay closes which should be when the key is on then power is sent to the motor from fuse 1 in the PDC. The motor gets grounded as described in the link I gave with the last step being through the mode switch.
You can access them on line here: Jeep Information Center, Jeep Parts Catalog, Jeep Repair Manual & More Click to expand… Thanks. I appreciate it! You probably missed the 3 wire connector on the back of the mode switch. Check here for troubleshooting the circuit. You probably missed the 3 wire connector on the back of the mode switch.
All of this assumes you have power to the blower motor. The panel does not power the relay. Fuse 8 behind the glove box does that. When the relay closes which should be when the key is on then power is sent to the motor from fuse 1 in the PDC. The motor gets grounded as described in the link I gave with the last step being through the mode switch.
What happens when the blower fails on a Chevy Equinox?
When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.
What happens to the heater when the valve fails?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p… Read More A failing heater core may cause the car’s interior to smell like engine coolant. The smell will become worse when the heater is turned on.
Where can I find the blower fan to test it?
Where can I find the blower fan to test it? Newbie Jeep owner here – 2000 TJ w/2.5. Got the TJ for a song, replaced engine with a rebuilt one then had the blower motor problem (high speed only and no speed) when it was all back together.
Why does my Jeep Wrangler fan only work on high?
Knows a couple things… The fan only working on high is normally due to a defective resistor pack. The resistor pack is used for all speeds except for the fan’s highest speed where the resistor pack is bypassed. Your 2003 has it in a different location than my ’97 does but yours should be somewhere up above the passenger side footwell.
Where is the motor resistor on a Jeep Wrangler?
Blower Motor Resistor Install – JeepForum.com Just inside the passenger door under the glove box there’s a black plastic kick-stop panel that’s kind of a PIA to remove. After that it’s a snap. Replaced this in my 04 last fall.
Knows a couple things… The fan only working on high is normally due to a defective resistor pack. The resistor pack is used for all speeds except for the fan’s highest speed where the resistor pack is bypassed. Your 2003 has it in a different location than my ’97 does but yours should be somewhere up above the passenger side footwell.
Blower Motor Resistor Install – JeepForum.com Just inside the passenger door under the glove box there’s a black plastic kick-stop panel that’s kind of a PIA to remove. After that it’s a snap. Replaced this in my 04 last fall.
What causes a blower motor to stop working?
In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Blower motors generally don’t fail out of the clear blue.
What to do if your AC blower is not working?
Disconnect cables to motor and resistor. Remove hose from motor, it should just pull off with little effort. Unscrew motor and resistor. Screw new motor and resistor in. Connect hose to motor. Connect cables to motor and resistor. Turn on car and test AC. Thanks for watching! Loading…
How do you fix a blower motor on a car?
Disconnect the electrical connector at the blower motor and jumper power and ground to the motor, bypassing all the speeds controls. Run a fused jumper from the battery to the power side of the motor and connect a temporary grounding jumper to the other motor terminal.
Where is the fan on a Jeep Wrangler?
This is the guy in charge of blowing air across the hot heater core, through the Jeep’s ventilation system, and into the cabin. The fan is usually located behind the glove box and when it fails, you may still get cold or warm air through the vents, but it will be at a drastically lower pressure no matter what fan speed you select.
Why does my Jeep Wrangler heater run hotter?
If that coolant splashes onto the heater core, then the smell probably will intrude into the cabin. This will also cause the engine to run hotter and will affect the temperature level of the Jeep’s heating system.
Where can I find the blower fan to test it? Newbie Jeep owner here – 2000 TJ w/2.5. Got the TJ for a song, replaced engine with a rebuilt one then had the blower motor problem (high speed only and no speed) when it was all back together.
If that coolant splashes onto the heater core, then the smell probably will intrude into the cabin. This will also cause the engine to run hotter and will affect the temperature level of the Jeep’s heating system.
This is the guy in charge of blowing air across the hot heater core, through the Jeep’s ventilation system, and into the cabin. The fan is usually located behind the glove box and when it fails, you may still get cold or warm air through the vents, but it will be at a drastically lower pressure no matter what fan speed you select.
Why does my Jeep Wrangler have no coolant?
However, even if there is no coolant smell, but an issue with the heater, it is a good idea to check these hoses for heat. If the engine is warm, then you should feel heat from the hoses as well. If not, then the coolant is not circulating properly and you could have air in the lines or a clogged heater core that needs a flush.
What happens if you have a bad blower motor?
The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air.
What happens if you lose the blower motor relay?
The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air. The blower motor relay controls the current used to power the blower motor,…
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.
What are the symptoms of a bad blower motor relay?
3. Melted relay. Another more serious symptom of a problem with the blower motor relay is a burned or melted relay. Relays are exposed to high current loads and can sometimes get hot when they develop problems.
Where is the blower control switch on the dashboard?
The blower control switch on the dashboard controls the circuit flow of the blower motor to adjust the voltage from low, to medium, to medium-high, to high. When on high, the circuit bypasses the blower resistor.
3. Melted relay. Another more serious symptom of a problem with the blower motor relay is a burned or melted relay. Relays are exposed to high current loads and can sometimes get hot when they develop problems.
The blower control switch on the dashboard controls the circuit flow of the blower motor to adjust the voltage from low, to medium, to medium-high, to high. When on high, the circuit bypasses the blower resistor.
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.
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 can I tell if my blower motor has a problem?
Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times. The system enters the self-diagnostic mode and at the end of it, if there is a problem, the fault code will be displayed on the display.
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 is my Jeep Wrangler not running hot?
Like the blower motor itself, the resistor is not a safety risk to other components, but it definitely makes things uncomfortable until a replacement is installed. Not having enough engine coolant (antifreeze) is something that will make your engine run hotter. Ironically, it also will prevent your vehicle from generating enough heat.
How does the heater work on a Jeep Wrangler?
When your Jeep reaches its optimal temperature, its thermostat opens and allows that coolant from the cooling system to flow through the engine, removing heat and sending it into the radiator, then into the heater core which, ultimately, distributes it into the Jeep.
Why does my Jeep Wrangler heater smell bad?
A defective hose, whether it is a connection issue, rot, or they are torn in some way, can cause coolant to leak and you’ll should smell coolant in the engine bay. If that coolant splashes onto the heater core, then the smell probably will intrude into the cabin.
Where is the blower located on a jeep?
Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC control panel. “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. I have manual a/c.
Why are the vents on my Jeep not working?
This is typical of a vacuum leak or failure of the vacuum check valve. When you ascend the hill, you loose vacuum from the engine and the A/C vacuum controls loose suction so the vents can’t remain open. Most systems then default to defrost vents.
Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC control panel. “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. I have manual a/c.
Is the mode door actuator on a jeep WJ?
The blower motor is completely electrical and the mode door actuator is vacuum controlled. By the way, the link you posted on the blower motor replacement is not for the WJ. The WJ does not have any cover over the blower motor, you can see it when looking up in the footwell area.
Why is the air blower on my Jeep not working?
I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure). Depending on the length of the trip, it may come back on again. I replaced the blower motor resistor and I thought that fixed the problem, but unfortunately it did not.
Where is the blower connector on a jeep?
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. Since the state of the blower changes after switching ignition off/on, the problem can be inside the AC control panel.
The blower motor is completely electrical and the mode door actuator is vacuum controlled. By the way, the link you posted on the blower motor replacement is not for the WJ. The WJ does not have any cover over the blower motor, you can see it when looking up in the footwell area.
Like the blower motor itself, the resistor is not a safety risk to other components, but it definitely makes things uncomfortable until a replacement is installed. Not having enough engine coolant (antifreeze) is something that will make your engine run hotter. Ironically, it also will prevent your vehicle from generating enough heat.
When your Jeep reaches its optimal temperature, its thermostat opens and allows that coolant from the cooling system to flow through the engine, removing heat and sending it into the radiator, then into the heater core which, ultimately, distributes it into the Jeep.
How do you Fuse a Jeep Wrangler TJ?
Tilt the upper edge of the glove box door upward toward the instrument panel enough to reattach the glove box strap to the door. Rotate glove box door to the closed position.
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…
Where are the fuse panels on a Jeep Wrangler?
Here you will find fuse box diagrams of Jeep Wrangler 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 and 2006, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.
The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air.
Why is my a / C blower not blowing?
A metal that when it corrodes, it turns white, and unlike copper, aluminum corrosion does not conduct electricity at all and causes resistance issues and can cause overheating of a circuit. Took out a common finger nail Emory board and went to work, both sides of each contact, then used a small brass brush on each side and along the tips.
Where is the blower resistor on a 2017 Chevy?
Hit the A/C button, compressor is coming on, so not a low Freon issue. On the 2017, I located the blower resistor plugged into the duct on the passenger side, upper left area of the foot area, was surprised to find out that it could be accessed without even removing the cover for the blower area.
What to do if your a / C unit is not blowing?
Took out a common finger nail Emory board and went to work, both sides of each contact, then used a small brass brush on each side and along the tips. Blew out the resistor connector to make sure no residue. Took a very small screw driver and cleaned and scored the contact point that was discolored.
Disconnect cables to motor and resistor. Remove hose from motor, it should just pull off with little effort. Unscrew motor and resistor. Screw new motor and resistor in. Connect hose to motor. Connect cables to motor and resistor. Turn on car and test AC. Thanks for watching! Loading…
Why is my Jeep Wrangler fan not working?
Recently the fan on my 2001 TJ stopped. It does not work on any speed or on heat or A/C. I pulled the blower motor and straight wired it to the battery. It worked. I also pulled the speed selector switch. I ohm the switch. It appeared to be ok.
How to troubleshoot Jeep Wrangler air conditioning blower?
Troubleshooting Jeep Wrangler Air conditioning Blower and Repair; Fixed! – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.