Heater control problem, help please! - JeepForum.com

 
LinkBack Thread Tools
post #1 of 15 Old 12-10-2007, 04:02 PM Thread Starter
Parsonsbri
Registered User
 
Join Date: Dec 2007
Location: Avon, OH
Posts: 4
Heater control problem, help please!

Hi all, new to the forum here.

I own a 2001 Jeep GC and recently sold it to my Dad. It is in really great shape. Of course a month after I sell it to him, there is a problem.

What is happening is that the heat on the passenger side is not working, only "blowing cold" according to pops. On the driver side, no problem. On the passenger side the defrost vent, vents on the dash and the floor all blow cold.

He called a dealer in the small town where he lives and was told that a little plastic piece has a tendency to break and the only repair is to replace the whole control unit...wait for it...for $900, thank you.

Can anyone provide some insight? I would really like to know if anyone has either experienced this or knows a solution.

Thanks,

BP

Parsonsbri is offline  
Sponsored Links
Advertisement
 
post #2 of 15 Old 12-10-2007, 04:05 PM
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Posts: 19,793
blend door issue. very common. there's write-ups around here to help you do it yourself.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey is offline  
post #3 of 15 Old 12-10-2007, 04:07 PM
zaq123
Registered User
 
zaq123's Avatar
1941 JK Wrangler 
 
Join Date: Jul 2004
Location: here
Posts: 4,006
I assume it's Limited. If so, this is your issue, or should I say your dad's issue

http://www.wjjeeps.com/hvac_sub_assembly.htm
zaq123 is offline  
post #4 of 15 Old 12-10-2007, 04:10 PM
JG_Canuck
Registered User
2000 WJ 
 
Join Date: Mar 2007
Location: Kitchener, ON Canada
Posts: 1,213
Kludge fix: search ebay for "heater treater"
JG_Canuck is offline  
post #5 of 15 Old 12-10-2007, 04:36 PM Thread Starter
Parsonsbri
Registered User
 
Join Date: Dec 2007
Location: Avon, OH
Posts: 4
Thanks guys!

Is there any way to diagnose which of the two problems that are listed on the link without going in for service?
Parsonsbri is offline  
post #6 of 15 Old 12-10-2007, 06:27 PM
koegg58
Registered User
 
Join Date: Dec 2007
Location: High Ridge, Mo.
Posts: 4
I just had this done at the dealer and had them replace HVAC control box with redesigned unit so it should not happen again. While it's apart you should change out the evaporater and heater cores as well. I know this is expensive but thats the price of owning a Jeep.
koegg58 is offline  
post #7 of 15 Old 12-10-2007, 06:37 PM
Briandl
Registered User
 
Join Date: Mar 2005
Posts: 970
Quote:
Originally Posted by Parsonsbri
Thanks guys!

Is there any way to diagnose which of the two problems that are listed on the link without going in for service?
Run the test shown here:

http://www.wjjeeps.com/climate.htm

You can then post the codes here and we'll be able to give you more specific information about the problem and solution.

How many miles on the Jeep in question?

If you replace the evaporator core and heater core I've heard you should also replace the expansion valve.

2002 Jeep Grand Cherokee Limited 4.7L H.O. V8
Briandl is offline  
post #8 of 15 Old 12-10-2007, 07:07 PM
alexo1us
Registered User
 
Join Date: Jun 2006
Location: toronto
Posts: 144
Its your dad..
fix it right..
maybe he will pay for half since he owns it bbw here
the heater treater is great option but not the best
even if you go this route it will cost you ,more if someone else does the work,
new parts are better
good luck
Alex

08 Overland crd
5.9 Wrecked 12 24 07
My New Love Stolen /07/07
01 Grand limited 4.7V8/QD
SFN Silver on Grey
alexo1us is offline  
post #9 of 15 Old 12-11-2007, 07:30 AM
WJChris
Registered User
 
WJChris's Avatar
2000 WJ 
 
Join Date: Nov 2007
Location: Santa Rosa, California
Posts: 2,808
I just replaced my heater core (same amount of work) Only took 10 hours.
Stealership here wanted $1500!!

Get a manual and do it yourself!
WJChris is offline  
post #10 of 15 Old 12-11-2007, 08:46 AM
Wheelin98TJ
JEEP FREAK
 
Wheelin98TJ's Avatar
1998 TJ Wrangler 
 
Join Date: Apr 2004
Posts: 26,158
Quote:
Originally Posted by Parsonsbri
Thanks guys!

Is there any way to diagnose which of the two problems that are listed on the link without going in for service?
You would still have to pull the dash, even if its a problem with the blend door actuator, because your problem is with the passenger side.
Wheelin98TJ is offline  
post #11 of 15 Old 12-12-2007, 02:58 PM Thread Starter
Parsonsbri
Registered User
 
Join Date: Dec 2007
Location: Avon, OH
Posts: 4
Thanks guys.
The reason I am here is because $900-1500 is not in the budget. We have to do this ourselves if its going to happen. It looks like even the worst case would take a day at most to do it. both of us are fairly handy around a car. On my 98 limited I had the dash out once to do a stereo upgrade. It was scary the first time, but you just have to be patient and follow the instructions.

i am going to have dad run the diag and see what codes come up. I will report back once I get the codes.
Parsonsbri is offline  
post #12 of 15 Old 12-12-2007, 03:24 PM
JG_Canuck
Registered User
2000 WJ 
 
Join Date: Mar 2007
Location: Kitchener, ON Canada
Posts: 1,213
The parts are not that expensive, and if you can spare the time it's easily a DIY job. There is a full writeup on www.wjjeeps.com and there is some valuable additional info here
JG_Canuck is offline  
post #13 of 15 Old 01-11-2008, 03:35 PM Thread Starter
Parsonsbri
Registered User
 
Join Date: Dec 2007
Location: Avon, OH
Posts: 4
Its been a while since I have been back, but all is well.

Ran the diag suggested by the dude at "Heater Treater". I was lucky since it was only the blend door and not the motor. Easy fix. Took us about an hour and a half. I could do it again in 30 minutes. Compared to the $1000 plus the dealer wanted, Dad is ecstatic and the heater is working perfectly.

Thanks for the tips gents!
Parsonsbri is offline  
post #14 of 15 Old 01-11-2008, 05:00 PM
daveyboy43
Registered User
 
Join Date: Jan 2007
Location: PITTSBURGH PA
Posts: 139
What test did he tell you to run?
daveyboy43 is offline  
post #15 of 15 Old 01-11-2008, 07:41 PM
zaq123
Registered User
 
zaq123's Avatar
1941 JK Wrangler 
 
Join Date: Jul 2004
Location: here
Posts: 4,006
Quote:
Originally Posted by daveyboy43
What test did he tell you to run?

here

http://cgi.ebay.com/ebaymotors/Jeep-...spagenameZWDVW
zaq123 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









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
heater A/C control flashing rapidrabbit ZJ Grand Cherokee Forum 0 12-12-2008 02:55 PM
Heater control problem 4.0 ZG 1996 jimjam515 ZJ Grand Cherokee Forum 0 08-22-2008 08:43 AM
Heater / AC Control 99' JGC codyman ZJ Grand Cherokee Forum 1 01-25-2006 07:47 PM
1998 JGC limited 5.9 dome lights and heater control lights problem zoom248 ZJ Grand Cherokee Forum 6 04-12-2004 05:02 PM
Heater Control Question boing ZJ Grand Cherokee Forum 2 06-17-2003 11:18 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