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Car Forum / Jaguar Cars / April 2004

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Wiring Diagram - post 88 XJS speedometer

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Steve Shuttleworth - 17 Feb 2004 20:32 GMT
Hi All

As some of you will have seen from my earlier post, I am trying to work out
how to drive the speedometer of my 85 XJS using a differential mounted
transducer from a late 3.6 XJS.  From the lack of replies, I assume no-one
knows how I should proceed, which is fine, but I need to see a wiring
diagram for an XJS with a diff monunted transducer so that I can work out a
way ahead.

I have searched high and low on the web, but can't find any resources there
apart from buying another manual.  As I don't own a post 88 car and I
already have a Jaguar manual which covers my own car, the price (around 60
UK pounds) is a little excessive to look at one drawing.

Please please please could some kind soul scan and e-mail me the information
I need.  I suspect it will be one or two pages at the most in a supplement
at the back of the workshop manual for XJS 3.6 & 4.0L models.

I hope someone can help me, I'm getting short on cash and long on
frustration when all I want to do is get my lovely Jag back on the road.

Stevieshutts
DieInterim - 18 Feb 2004 03:21 GMT
Steve,

Some of us are just slothlike.....sorry.

I have done the work for you and now all you need to do is choose....

http://www.gaugeguys.com/ratioesa.htm
http://www.gaugeguys.com/ratioinst.htm

http://www.specmo.com/Corporate/Calibration/Calibration.html

However this is the outfit I recommend...they make their own line. =)
Give em a call for free consultation.

http://www.specmo.com/Corporate/Calibration/Calibration.html

Best of Luck,
Blake
Steve Shuttleworth - 19 Feb 2004 00:38 GMT
Thanks Blake

As it turns out, I don't need to change the calibration.  I managed to get
hold of a speed transducer module off a 1989 3.6 today, and the guy  who
gave it to me also had a wiring diagram for the car.  Having run a couple of
new wires, the speedo and computer came on line.

Not sure if the thing was accurate, I tested it it the most precise way
known to man; I followed a stream of traffic at 40mph on a road with a fixed
speed camera and as I slowed with the traffic past the camera, it read
exactly 30mph!

Now all I have to do is work out why the cruise control doesn't work -
probably the vacuum module on the engine.

Stevieshutts

> Steve,
>
[quoted text clipped - 14 lines]
> Best of Luck,
> Blake
JamesBurt - 22 Apr 2004 21:36 GMT
I have a similar problem, I have an 89 XJ-S, and changed the rear end, now
I need to figure out how to change to a transmission mounted transducer
instead of a differential... anyone have any advice?

JamesBurt@JamesBurt.com
 
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