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Conference terri::cars_uk

Title:Cars in the UK
Notice:Please read new conference charter 1.70
Moderator:COMICS::SHELLEYELD
Created:Sun Mar 06 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2584
Total number of notes:63384

1634.0. "XJ6 Question" by GRANPA::JCARRUOLO () Fri Dec 20 1991 04:24

    Looking for XJ6 information.....
    
    
    I am looking at some late model XJ6's here in the States. I have
    noticed that the condition of some of the cars does not match the
    indicated milage on the odometer. All had electronic gauges.
    
    Does anyone know if the electronic odometers on the XJ6 are easy to reset 
    or adjust ????
    
    This might explain my observations...
T.RTitleUserPersonal
Name		DateLines
1634.1clocking ??CHEFS::ARNOLDFri Dec 20 1991 12:208
    There is nothing to stop the disconnection, for a time, and
    reconnection later, when you wish to sell, of the odometers on XJ6 and
    XJ12 ranges.  The fact that they are electronic presents no more than a
    30 minute problem to a competent person.  Given the current state of
    the used car market in the UK, don't know about elsewhere, a very low
    mileage used XJ will make more money than a high mileage model.
    
    Doug
1634.2Deeply meaningfulHAMPS::LINCOLN_JFri Dec 20 1991 15:368
>    						.....a very low
>    mileage used XJ will make more money than a high mileage model.

	Well I'd never ever have guessed that!

	-John
1634.3XJ6 Speedometer...one answerDENVER::DAVISGBJag MechanicThu Dec 26 1991 20:3537
    Any of you recent Jag owners need advice, drop me a line, and I can
    generally get pretty good answers.  A friend I have known since I was
    12 years old is now a Jaguar *Master Technician* at our local
    dealership, and is happy to answer questions.... (hotair::Davis)
    
    For XJ6's, his comments were...
    
    1988 and later speedometers *cannot* be reset unless they are sent back
    to the instrument cluster manufacturer.  At that point they are reset
    to zero and tested for one mile.   (Blasting into ROM I would guess). 
    There were problems with some of these instruments, and Jaguar replaced
    some of them under warranty.  At that point the car was given a new
    instrument cluster, with speedometer, and reset mileage.  The car was
    also given a sticker, affixed to the door panel that said the mileage had
    been reset (US Law).  Of course, it is simple for someone to later pull
    that sticker off.
    
    As for disconnecting the speedometer, he said it could be done, but
    would probably severely affect the performance of the car!  This is
    because many other car components are controlled by speed and get that
    information directly from the instrument cluster.  An example is the
    fule injection in an XJ6.  When the speedometer is disconnected, the
    fuel injection no longer has road speed input, determines that a
    failure has occurred, and goes into "open loop".  Basically, it
    doesn't work well, and is in 'limp home' mode.
    
    Hope this helps....
    
    As you can guess, my friend has a WEALTH of information in his head. 
    He recently loaned me the engine lifting plate to pull the engine out
    of my XK150 and the clutch alignment tool (gotta buy one of those
    someday...).
    
    Hope the above info helps!
    
    Gil