Blower Motor Resistor - PSA - JeepForum.com
 
LinkBack Thread Tools
post #1 of 3 Old 03-11-2019, 08:37 AM Thread Starter
axlaxl
Registered User
2000 XJ Cherokee 
 
Join Date: May 2014
Location: Brooklyn
Posts: 331
Blower Motor Resistor - PSA

Just throwing this out there as I've had two of them fail over the years on my 00 XJ.

Symptoms - HVAC fan only blows on 4 or high and only blows on the dashboard vents to the windshield (defrost).

Cause - The HVAC Blower Motor Resistor is most likely bad.

Part - For 97-01 XJ

For - For 91-96 XJ

Install - Very easy, less than 5 minutes, only need simple tools.

PSA - This resistor actually uses the blown air to cool itself. It installs into the actual vents where air is blowing, which cools it down. Because of this, DO NOT TEST THE INSTALLATION WITHOUT HAVING THIS DEVICE MOUNTED OR YOU WILL RISK IT OVER HEATING AND DESTROYING ITSELF AS WELL AS SIGNIFICANTLY BURNING YOURSELF OR ANYTHING IT IS TOUCHING. It will achieve a very high heat within seconds of being turned on and if it is not mounted in the vents bad things will happen very fast.

If I have missed anything please post here.

axlaxl is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 03-11-2019, 09:36 AM
tjwalker
It's the crank sensor!
 
tjwalker's Avatar
1999 XJ Cherokee 
 
Join Date: Nov 2007
Location: Central Minnesota
Posts: 8,979
Garage
Good thread. One thing to add.

It is not uncommon for the resistor block to fail because the blower motor is pulling too much amperage. And if the blower motor itself is the root cause, replacing the resistor will work in giving you all of the blower speeds back, but the resistor will fail again shortly. You will then need to replace the blower motor for a complete repair.

It does touch on this in the video towards the end, but thought I would include it in text for those that do not watch the video.

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
tjwalker is offline  
post #3 of 3 Old 03-12-2019, 03:18 PM
TheBoogieman
Distubed Jeepaholic
 
TheBoogieman's Avatar
2003 TJ Wrangler 
 
Join Date: Aug 2006
Location: charlottesville
Posts: 38,334
The brand you buy makes a difference also. Cheapo resistors = failure sooner.

Quote:
Originally Posted by jeepinmichguy_ View Post
TheBoogieman is a jerk.
03' Rubicon/Zone 4.25" combo lift/Rancho 9000XL shocks/5.13 gears-35" MTZs/BM brakes/LoD bumpers
99' XJ Classic (JEEP #18) ) 5" BDS lift / HP30/ 8.25/ 33" DC Extreme Country/Tactik black satin wheels.
TheBoogieman is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
HVAC Blower / Electrical Issues CodyJMathis KL Cherokee 2014 & up 2 12-30-2018 09:02 AM
Blower Mtr Resistor Replacement plimbob WJ Grand Cherokee Forum 1 12-12-2018 11:15 AM
Replaced Blower Motor and Resistor, still not blower schulert WJ Grand Cherokee Forum 4 03-11-2018 09:03 AM
Blower motor Resister newt5005 WJ Grand Cherokee Forum 1 12-05-2017 07:50 PM
2010 JK air barely coming out of vents (new blower motor) Ayahuasca JK Wrangler Technical Forum 4 12-02-2017 10:48 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome