What happens when a Jeep Wrangler fan goes bad?
The problem is that when the fan motor starts to go bad, it starts drawing too much current from its shorted windings. A good fan motor is supposed to draw something like 14-15 amps on its highest fan speed setting. They can start pulling 25 amps or more once they go bad which is what starts melting things.
How to fix melted HVAC connector in Jeep Wrangler?
Cut the 3 wires (make sure you note which wire goes where) crimp the connectors on and plug them back in one at a time…fixed my fan for 45 cents lol. Cut the 3 wires (make sure you note which wire goes where) crimp the connectors on and plug them back in one at a time…fixed my fan for 45 cents lol. Click to expand…
What to do if your blower motor melts?
Jeep’s fix was to replace the melted blower motor resistor and install a new wire harness with updated connectors. The problem was with too much resistance in the connector which generated heat. Very scary since there are numerous stories of GC’s starting on fire related to this issue.
What is dielectric grease on a Jeep Wrangler?
Dielectric grease is an insulator, not a conductor. It is made to keep oxygen from getting to a connection. Same thing happened on my 2002 Grand Cherokee. Jeep’s fix was to replace the melted blower motor resistor and install a new wire harness with updated connectors.
Why does my Dodge Dakota blower keep going bad?
If you leave the blower motor switched continually on you may not notice this. If so I suspect that there is an earth fault on one of the wires connected to either pin 4 or 5 of the resistor. Here is a the blower circuit for a 2002 Dodge Dakota. Hopefully it is the same for your particular year model.
Why does my GM blower motor resistor keep failing?
In some cases, the heat is so high that it melts the connector. This is common on late model GM vehicles. If you discover a melted connector, do NOT attempt repair. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor.
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.
If you leave the blower motor switched continually on you may not notice this. If so I suspect that there is an earth fault on one of the wires connected to either pin 4 or 5 of the resistor. Here is a the blower circuit for a 2002 Dodge Dakota. Hopefully it is the same for your particular year model.
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 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…
Why does my blower resistor keep going bad?
Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem.