The fan blower resistor is located behind the glove compartment, and down underneath the dash. It is most easilly accessed by both removing the glove compartment, and then by reaching up underneath the dash from below. It is NOT easy to access, and I took my Rubicon to the dealer to have them mess with the cheap, inaccessible wiring harnesses and connectors. Labor on the repair runs about 3/4 of an hour, and the part ran me about $30.
The blower resistor is behind the glove box door.
in your but
Where is the resistor on 2001 jeep wrangler
under the dash below the glove box
Either your switch is messed up, or more likely the blower motor resistor is bad.
your blower resistor is going bad
Go to Wholesalemopar.com and search for your wrangler, keyword "resistor". Two parts will come up, I believe they are the same, but one has a link to a schematic for blower assembly. Good Luck.
Replace the blower motor resistor.
Could be a bad resistor pack at the blower motor Could be a bad low speed relay
Pull out the lock on the blower motor resistor wire harness connector to unlock the connector latch . Depress the latch on the blower motor resistor wire harness connector and disconnect the connector from the resistor. Remove the two screws that secure the blower motor resistor block to the HVAC housing. Remove the resistor block from the HVAC housing............
If it works on some speeds and not others, the most likely problem is a defective Blower Motor Resistor Pack. It is located near the blower motor.
There is a resistor near the blower that is bad, known cause is high speed only.