A different take on why HVAC connectors melt - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-25-2010, 07:12 PM   #1
Jeeper
 
pokey's Avatar
 
Join Date: Feb 2010
Location: backroads of the Mojave
Posts: 1,106
A different take on why HVAC connectors melt

I know there has been plenty of discussion here on the melted HVAC switch/connector problem. When I bought my jeep 4 months ago the a/c and fan didn't work. When I looked into it sure enough the mode selector switch connector (3 wires - fan relay, ground, and a/c selector) was melted, disconnected, and taped off. I read the JP magazine article about adding relays. The general consensus seems to be that the fan is drawing too many amps, which causes the overheating. I talked to an independent jeep mechanic here in Orange county and he told me the reason for the overheating is because of a loose connection. This made sense to me since I have a golf cart and if any of the cables connecting the six batteries is loose it will get VERY hot. Chrysler doesn't carry that connector I needed anymore so my only option was to cut it off, pigtail new wires on and put new female spade terminals on. I broke open the melted connector and retrieved the spades. They didn't look like anything off the shelf, so I took them to Carquest and the guy found a perfect match. I soldered them to the pigtails, cleaned up the male tabs on the back of the switch real good and did a test fit of the three new tabs. I gave them a little extra crimp to make sure they slid on nice and tight. Since there was no longer plastic separating them I wrapped each with electrical tape after soldering them to the wire. So far, so good. Everything works great and I've given the fan and heater an extended road test. I guess maybe the moral to the story is to make sure the connections are good and tight. Maybe the connectors aren't designed real well and because jeeps are used offroad they work loose over time. Just my 2 cents.

__________________
__________________________________________
. . . . picking the lines with my twenty-nines . . . .
__________________________________________

'99 sport 4.0 5 speed, top-of-the-line floormats
pokey is offline   Quote Quick Reply
Old 02-16-2011, 08:04 PM   #2
Jeeper
 
Join Date: Dec 2009
Posts: 28
Great write-up.

You would think that this should be common sense but as we know and are sometimes guilty of: common sense does NOT prevail. LOL

Thank You.
2000JeepWrangler is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Any HVAC technicians here? mrcarcrazy Off-Topic 19 02-05-2010 02:23 PM
HVAC Gone, Squealing, Voltmeter Crazy, and Check Gauges is Back! burton160w TJ Tech Forum 11 02-02-2010 03:14 PM
HVAC LED light install question abw0004 TJ Tech Forum 10 01-02-2010 06:21 PM
Are the A/C controls suppose to Light up? scottutk5 TJ Tech Forum 5 03-19-2009 01:07 PM
HVAC Knobs. Walkeraviator TJ General Discussion Forum 0 10-10-2007 06:35 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:28 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC