How to fix a blower motor resistor in a Jeep Wrangler?

How to fix a blower motor resistor in a Jeep Wrangler?

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Where is the resistor on a blower motor?

Because resistance creates heat while current is flowing, the blower resistor is mounted in the duct near the blower motor so the resulting airflow will keep the resistor cool.

How does a relay work on a blower motor?

Finally, with the fan switch on the highest speed, the fan motor is receiving system voltage (14.5 with the engine running). Some systems will energize a relay when the switch is set at the highest fan speed. The relay then closes its contacts, feeding full voltage to the fan, because a relay can handle the current better than the fan switch.

What to do if your blower resistor Burns?

Look for obvious signs of corrosion and burns from overheating. If you see signs of overheated connectors, replace the blower resistor and its connector, but again, you must splice the wires right, or you’ll have problems at the splice later on.

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Where is the blower motor resistor located on a car?

It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.

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 much does it cost to replace a blower motor resistor?

The blower motor resistor or control module replacement is not very expensive. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership.

Where are the fuse panels on a Jeep Wrangler?

Here you will find fuse box diagrams of Jeep Wrangler 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 and 1995, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

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 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.

How to repair Jeep Wrangler YJ 1987-95 wiring diagrams?

These diagrams include: Access our Jeep Wrangler-YJ 1987-1995 Wiring Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles.

Here you will find fuse box diagrams of Jeep Wrangler 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 and 1995, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Where is the starter relay on a Jeep Cherokee?

On front of right front wheelwell. Under right side of dash. Under instrument panel, to right of steering column. In tailgate, next to wiper motor. Starter Relay (Graphic 1) Behind right headlight, on wheelwell. Starter Relay (Graphic 2) Behind right headlight, on wheelwell. Above starter relay, behind battery.

What to do if your blower motor resistor is not working?

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Can you watch YouTube on a Jeep Wrangler?

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How to draw a wiring diagram for a jeep heater?

Since you did have melting at the mode switch, a common problem, & replaced the connector with 3 individual wires make sure the wires are in the correct positions. Smaller light green wire on top, larger dark green wire in the middle & black on the bottom.

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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.

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.