Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Yet another A/C Blower problem....

Thread Tools
 
Search this Thread
 
Old 10-08-2019, 12:10 PM
  #1  
Newbie
Thread Starter
 
OldSaabaruGuy's Avatar
 
Join Date: Dec 2012
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default Yet another A/C Blower problem....

Hi All,

Well, i looked around and tried all the things in the forums so I thought I would ask.

First I have a 1999 XJ with 195K on it. It is my hobby vehicle mostly because I keep having minor things break.

Recently the A/C compressor developed a leak and would not hold pressure. I had it evacuated then replaced the compressor. FYI, about 2 years ago I was having trouble with the blower and I tested the voltages at the fan and found about 14 volts so I assumed the fan was bad. I replaced the fan and had no success so I went to my local dealer and replaced the switch panel and the resistor pack all in one go. After that the blower worked fine, noisy but it works. So the switch was bad apparently not the fan. Oh well. Fast forward to today, the blower was fine the new compressor did not cool as well as it once did but I expected that. It all worked great but after work I went to head home and the fan would not come on. I grabbed my multimeter and pulled the plug off the blower and got a 14 V reading on the connector again. I put a couple wires into the connector itself to make getting a reading easier and I get a voltage of 9 volts regardless of the dash switch setting.

It never goes to zero. By the way, i pulled the fan out and it runs find with a 12 volt battery. I have thought of running a wire and patching in a simple toggle switch since the fan is running full time generally anyway.

FYI, all other functions of the A/C are fine. The compressor is pulling down and chilling fine, the A/C control switch is working as is the air direction functionality.

So what do you suggest? What do people do now that these panels are no longer available from Jeep?
Old 10-08-2019, 01:53 PM
  #2  
CF Veteran
 
PatHenry's Avatar
 
Join Date: Nov 2017
Location: Groton, MA
Posts: 3,700
Received 235 Likes on 208 Posts
Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
Default

Originally Posted by OldSaabaruGuy
I have thought of running a wire and patching in a simple toggle switch since the fan is running full time generally anyway.
If you like starting fires in your Jeep, this is a great idea.

Did you check the settings at the resistor? Did you clean and tighten down the grounds?

You could try a junkyard. I believe that the same panel was used in TJ wranglers and possibly even some GC's. I'd find all the years and models that used the panel and go check out the junkyard or ebay. In addition, make sure it's actually bad. More than likely it's deteriorated wiring in the system or a bad ground.
Old 10-08-2019, 02:10 PM
  #3  
CF Veteran
 
4.3L XJ's Avatar
 
Join Date: Aug 2008
Location: Chico, CA
Posts: 6,580
Received 491 Likes on 421 Posts
Year: 1986
Model: Cherokee
Engine: 4.3L with headers and full 3" exhaust system
Default

Generally the ballast resistor goes, it works by resistance and gets very hot. But when it does, it works on high. I think you have another problem. Check the voltage to the fan, and particularly the ground. If you are getting voltage to various parts of the circuit, then a ground problem is likely
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mountainbikeak
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
07-04-2018 10:10 PM
TwistedWrench
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
06-06-2015 02:50 PM
eh89
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
04-21-2010 06:20 AM
Gram Lanier
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
03-09-2010 10:44 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: Yet another A/C Blower problem....



All times are GMT -5. The time now is 09:52 PM.