Constant HVAC issues - Page 2 - JeepForum.com
Reply
 
LinkBack Thread Tools
post #16 of 24 Old 08-05-2010, 01:15 PM
TeeJay00
Registered User
2000 TJ Wrangler 
 
Join Date: Nov 2009
Location: Kuwait
Posts: 1,547
Quote:
Originally Posted by Joeggernaut View Post
keyword^^^^. it rhymes with stealership as in steal your money.

and getting oem might not be your best bet considering oem is the main issue. but there really isnt any aftermarket fan, switch, or resistor so we are all stuck unless you put relays.
I am interested in this relay setup ... I might aswell do that if I managed to get a cheap replacement blower!!! The cheapest I found here was $180

TeeJay00 is offline  
Sponsored Links
Advertisement
 
post #17 of 24 Old 08-05-2010, 02:06 PM
Border Dave
Got Sand?
 
Border Dave's Avatar
2001 TJ Wrangler 
 
Join Date: Dec 2005
Location: Bellingham, WA
Posts: 2,621
Quote:
Originally Posted by lostone73 View Post
Is your relay installed in the "high" circuit only? I have a FSM and ive just about figured out how to build a relay bank of 4 to carry the load for all 4 speeds.
Fried blower switch fix - JeepsUnlimited.com Forums
Border Dave is offline  
post #18 of 24 Old 08-05-2010, 02:12 PM
Ross
Registered User
2001 TJ Wrangler 
 
Join Date: Dec 2002
Posts: 12,082
Quote:
Originally Posted by Joeggernaut View Post
For 100-125 bucks you can get a new blower motor, a switch, a resistor, and 4 relays with plugs. Take those 4 relays and splice them in between the switch and resistor as relays handle current and heat much better than a small under size wire that chrysler put in. Or let your jeep burn up and file a class action lawsuit against them and make them issue a recall to help the rest of us.
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.

01 TJ, 34 Super Swaper 34x10.5 bias, Winch, locked, belly up, some armor.
Ross is offline  
post #19 of 24 Old 08-05-2010, 04:26 PM
JBTJ
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2006
Location: Dallas
Posts: 11,537
Quote:
Originally Posted by Ross View Post
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.
Look at the wiring going to the fan switch. You should find a light blue wire, 3rd speed and a brown wire, 4th speed. These are the 2 wires I spliced into to add the relays. Remember 1 relay for each speed you want to do. Once you fix this design flaw the issues with the mode switch will go away.
JBTJ is offline  
post #20 of 24 Old 08-05-2010, 10:19 PM
Border Dave
Got Sand?
 
Border Dave's Avatar
2001 TJ Wrangler 
 
Join Date: Dec 2005
Location: Bellingham, WA
Posts: 2,621
Quote:
Originally Posted by JBTJ View Post
Look at the wiring going to the fan switch. You should find a light blue wire, 3rd speed and a brown wire, 4th speed. These are the 2 wires I spliced into to add the relays. Remember 1 relay for each speed you want to do. Once you fix this design flaw the issues with the mode switch will go away.
Don't those relays only protect the blower motor switch? Isn't the mode selector switch completely separate?
Border Dave is offline  
post #21 of 24 Old 08-06-2010, 06:45 AM
herbiehind
Registered User
1999 TJ Wrangler 
 
Join Date: Nov 2009
Location: mass.
Posts: 1,106
Quote:
Originally Posted by Ross View Post
Are you taking about in line for the blower switch? I just got done battling this problem, at least the first time. I ended up with a melted switch. The one that melted in my jeep was the one that controls the AC, MAX A/C and vents, not the blower switch.
the blower motor is the big draw (and the speed resistors) so it happened you were on a/c at the time . but really what did it was the motor/resistor . you isolate this like an ignition circuit with a relay . four to be exact . one for each speed . there are probably selector modules of some sort too but relays are all i currently know about . i know a guy that could likely do this with two relays with multiple contacts but he aint me . guys a genius .the only way i've come up with for two relays still involves power thru the resistor and switch gear and isolating the motor . i dont think that's good enough . so for me it's four relays .
herbiehind is offline  
post #22 of 24 Old 08-06-2010, 05:23 PM
Ross
Registered User
2001 TJ Wrangler 
 
Join Date: Dec 2002
Posts: 12,082
Quote:
Originally Posted by herbiehind View Post
the blower motor is the big draw (and the speed resistors) so it happened you were on a/c at the time . but really what did it was the motor/resistor . you isolate this like an ignition circuit with a relay . four to be exact . one for each speed . there are probably selector modules of some sort too but relays are all i currently know about . i know a guy that could likely do this with two relays with multiple contacts but he aint me . guys a genius .the only way i've come up with for two relays still involves power thru the resistor and switch gear and isolating the motor . i dont think that's good enough . so for me it's four relays .
This will fix the issue with the AC/max AC switch, the one that is on the same control as the vaccum lines?

I was thinking about cutting a hole in the bottom below the switches and another where the ash tray sits and putting in a fan, do you think that would keep things cool enough not to melt?

01 TJ, 34 Super Swaper 34x10.5 bias, Winch, locked, belly up, some armor.
Ross is offline  
post #23 of 24 Old 08-06-2010, 05:32 PM
JBTJ
Registered User
2001 TJ Wrangler 
 
Join Date: Mar 2006
Location: Dallas
Posts: 11,537
Quote:
Originally Posted by Border Dave View Post
Don't those relays only protect the blower motor switch? Isn't the mode selector switch completely separate?
They are involved through related circuits but I can't say for sure. But after adding the relays replacing the fan switch and the melting mode switch I no longer have had any issues what so ever. Even have done this on several other JEEPS with the same melting issues and none of them have had any problems.
JBTJ is offline  
post #24 of 24 Old 08-06-2010, 06:12 PM
Cuder
Registered User
2000 TJ Wrangler 
 
Join Date: Feb 2009
Location: Arlington
Posts: 2,726
zachjf posted the best diagram of the relay mod I have seen, look at post #33.
http://www.jeepforum.com/forum/f9/fr...w-pics-579700/
Cuder is offline  
Reply

Tags
hvac , blower , failing , ac , a/c , control circuit , melt , melting , tj , wrangler

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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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
Nothing but heat...HVAC issues SublimeJeep TJ Wrangler Technical Forum 5 06-03-2012 11:08 AM
constant 12V NJscott TJ Wrangler Technical Forum 2 03-28-2009 03:26 PM
HVAC issues Ktaadn TJ Wrangler Technical Forum 2 07-31-2008 07:54 PM
HVAC issues gudoldboy TJ Wrangler Technical Forum 4 02-24-2008 07:37 AM
Constant Leaks! RipcordAFF TJ Wrangler Technical Forum 10 09-12-2005 02:36 PM

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