Heater stopped working

[MLewis]

My blower stopped working completely on my 2000 TJ. It was intermittently going off over the last few months and now has stopped completely. I first replaced the blower switch and it worked for a day or so, now nothing. Yesterday, after reading through the threads here and watching a few youtube videos, I replaced the blower motor and the resistor, still nothing. Any ideas? What's left to do? I'm on a personal mission to get hot air!

Mark

 

[Jerry Bransford]

Check the wiring leading to the resistor pack and then to the motor. That wiring passes a lot of current so it can get hot enough to melt the insulation and short the circuit out. That happened to my '97, I had to splice in some new wiring.

 

[MLewis]

Thanks Jerry. I did notice when replacing the blower motor the wires were frayed and showing some copper. I taped them up good but only the wiring that was exposed. I have tried to trace the wiring back from the motor but its very hard to get to. I will try that process again and see what happens.

 

[Chris]

I second Jerry's suggestion. Let us know what you find!

 

[Joseph light]

My blower motor quit working. There's a plug that burns up that connects to it. It melts. I couldn't order or find the part new. Turns out a Jeep Liberty has the plug you will need. Cost me four bucks to fix and a short drive to the junkyard.

 

[Joseph light]

My blower motor quit working. There's a plug that burns up that connects to it. It melts. I couldn't order or find the part new. Turns out a Jeep Liberty has the plug you will need. Cost me four bucks to fix and a short drive to the junkyard.

 

[Jerry Bransford]

When the wiring leading to the hvac fan burns or melts, that is a good indication the fan has shorted internally and is drawing too many amps. The cure is replacing the fan motor together with the wiring that overheated. Just wrapping the burned wiring with tape is not a good way to go.