XJ6 & XJ12 Series I, II & III 1968-1992

Heater question

Thread Tools
 
Search this Thread
 
Old Oct 5, 2017 | 05:55 AM
  #1  
drkhorse12's Avatar
Thread Starter
|
Junior Member
Joined: May 2017
Posts: 4
Likes: 0
Default Heater question

I have a 1986 xj6 with a climate control issue. The cooling aspect of the system works fine. But when the system switches to heating the blower shuts down and no heat. I read somewhere in this forum that a sensor has to see that the water is warm enough before it will start the heater. I can't find this thread any more. Th post also said that it could be bypassed with a jumper. Does anyone know where this jumper is or give me a link to that thread. Thank you.
​​​​​
 
Reply
Old Oct 5, 2017 | 07:52 AM
  #2  
Doug's Avatar
Veteran Member
Liked
Loved
Community Favorite
Joined: Mar 2008
Posts: 25,538
Likes: 11,735
From: Pacific Northwest USA
Default

The switch itself is mounted on one of the pipes to the heater core. On a LHD car you can remove the under-dash trim panel and find it by looking upwards, roughly above the shaft of the handbrake. You could jumper the wires there if you wanted.

Or.....

Remove the console cheek panel, left side, and you should find two wires with gray connectors. Jump them together. See the picture

Cheers
DD
 
Attached Images  

Last edited by Doug; Oct 5, 2017 at 09:15 PM. Reason: sp
Reply
Old Oct 5, 2017 | 09:24 AM
  #3  
LnrB's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2014
Posts: 26,776
Likes: 10,318
From: Tehama County, California, USA
Default

Originally Posted by Doug
...
Or.....

Remove the console cheek panel, left side, and you should find two wires with gray connectors. Jump them together. See the picture

Cheers
DD
!! Thank you Doug!
I wondered what those were for!!
(';')
 
Reply
Old Oct 5, 2017 | 09:32 AM
  #4  
JagCad's Avatar
Veteran Member
Joined: Jul 2012
Posts: 6,796
Likes: 2,403
From: Walnut Creek, California
Default

Thanks for the "heads up", in an oblique way!!


We will have only a couple more "hot spells' before cold sets in.


My car has an extra manual valve in the heater lines. I call it my "summer/winter" valve. It is now closed so that there is no hot water in the cabin.


Almost time to open it and allow nice warm air....


Carl
 
Reply
Old Oct 5, 2017 | 02:10 PM
  #5  
Jose's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2007
Posts: 9,139
Likes: 2,662
From: Florida
Default

I thought those wires were for a Bass boost ??
 
Reply
Old Oct 10, 2017 | 05:41 PM
  #6  
xjfourty's Avatar
Senior Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2016
Posts: 435
Likes: 18
From: San Francisco Bay Area
Default

I envy you guys you are so good.
 
Reply
Old Oct 10, 2017 | 06:01 PM
  #7  
Jose's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2007
Posts: 9,139
Likes: 2,662
From: Florida
Default

when I bought my first Jaguar in 1989, I had no clue what I was getting into, but I had experience with a MG-B, and Volvo 1800-E since 1969.

The Jaguar is easier to fix than the MG or the Volvo. Just get the Service and Parts Manuials, you'll see.
 
Reply
Old Oct 11, 2017 | 09:16 PM
  #8  
LnrB's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2014
Posts: 26,776
Likes: 10,318
From: Tehama County, California, USA
Default

Originally Posted by xjfourty
I envy you guys you are so good.
Every single one in here had to start at the beginning sometime, even Doug and Grant, and Jose as he's just mentioned. They merely have more experience than the rest of us.

As you work on your car you'll learn things too, and as you've had your fingers into it, maybe 'just last week,' when the question comes up, you too will be able to help someone else just starting out, and that person will think, "You're so good, I envy you."

That's what this place is built on. What we know, we share.
(';')
 
Reply
Old Oct 11, 2017 | 11:21 PM
  #9  
Doug's Avatar
Veteran Member
Liked
Loved
Community Favorite
Joined: Mar 2008
Posts: 25,538
Likes: 11,735
From: Pacific Northwest USA
Default

I bought my first Jag 20 years ago and, although I had been tinkering with cars my whole life, I was like a fish out of water when it came to Jaguar mysteries. Without tons of reading, digging in, and most importantly, learning from others ...I would've been lost forever.

Cheers
DD
 
Reply
Old Oct 11, 2017 | 11:26 PM
  #10  
Doug's Avatar
Veteran Member
Liked
Loved
Community Favorite
Joined: Mar 2008
Posts: 25,538
Likes: 11,735
From: Pacific Northwest USA
Default

Originally Posted by LnrB

That's what this place is built on. What we know, we share.
(';')

Over the years I've been on many different hobby-car forums. Many good, a few not so good. But Jaguar people seem to be the most willing to help and share of any I've come across.

Good people, on the whole.

Cheers
DD
 
Reply
Old Oct 11, 2017 | 11:28 PM
  #11  
Doug's Avatar
Veteran Member
Liked
Loved
Community Favorite
Joined: Mar 2008
Posts: 25,538
Likes: 11,735
From: Pacific Northwest USA
Default

Originally Posted by LnrB
!! Thank you Doug!
I wondered what those were for!!
(';')

I never knew until ISC America mentioned it !

Cheers
DD
 
Reply

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



All times are GMT -5. The time now is 06:01 PM.