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

Heater Fan high speed not working, relay?

Old 06-16-2016, 03:44 PM
cds is offline
Thread Starter
Join Date: May 2016
Location: los angeles
Posts: 41
Likes: 0
Received 5 Likes on 5 Posts
Default Heater Fan high speed not working, relay?

Hello everyone,

Carl here, I've got a new to me 1972 XJ6.

AC (original delanair) or heater fan only operates on low speed, high speed just turns off.

Would someone be so kind as to let me know what the problem might be?

Im thinking Fan relay, but would like some suggestions on where the location is.

This is my second turn at S1 XJ6 ownership, oddly enough my previous on was the same year and mostly the same color.


Old 06-16-2016, 04:25 PM
Senior Member
Join Date: Nov 2015
Location: Oost-Groningen
Posts: 154
Received 18 Likes on 15 Posts

Mine does the same. I have heard the buttons on the middle panel can break. New ones are expensive so I would recommend getting an electrical scheme for the series 1 and measuring resistance in the button first, to make sure that is the problem.
Old 06-24-2016, 03:49 PM
Series1fan's Avatar
Senior Member
Join Date: Aug 2014
Location: baltimore
Posts: 146
Received 16 Likes on 15 Posts

That is odd, mine does the same, too.

I have other fish to fry in terms of work on the car so not thought to address the issue. I'll use the advice above myself though once I get started. Can I ask: How well does your AC work? Mine doesn't run terribly cool. Mine is, I think, also a stock set up.

Related Topics
Thread Starter
Last Post
XJ XJ6 / XJR6 ( X300 )
06-03-2016 04:26 AM
PRIVATE For Sale / Trade or Buy Classifieds
04-06-2016 11:00 PM
Scottish Chap
XJ XJ8 / XJR ( X308 )
01-24-2012 12:14 PM
XJ XJ6 / XJR6 ( X300 )
07-12-2011 12:41 PM
PRIVATE For Sale / Trade or Buy Classifieds
03-06-2011 11:21 AM

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

Thread Tools
Search this Thread
Quick Reply: Heater Fan high speed not working, relay?

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: