Tach doing tricks
#1
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Hello All,
I just purchase a 2004 xj8. Runs great, but noticed tach not working properly. Instead of sitting on zero it has moved the eight. Disconnected battery and tach went back to zero.
Then tach went to four as starting point. Is this a battery issue or what?
Thanks
I just purchase a 2004 xj8. Runs great, but noticed tach not working properly. Instead of sitting on zero it has moved the eight. Disconnected battery and tach went back to zero.
Then tach went to four as starting point. Is this a battery issue or what?
Thanks
#2
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Likely you need instrument pack.
You can check signal to verify. With key off hold trip button in, keep holding and start car. Keep holding trip button until airbag light goes out then release. It should say test mode on pack.
Keep pressing and releasing trip button until it shows tacho in on display. Compare to what needle shows.
If when you start car, the needle returns to zero, you can do same thing without starting car, just turn to position 2 instead of starting. If reading shows one thing and needle is off, you need pack.
You can check signal to verify. With key off hold trip button in, keep holding and start car. Keep holding trip button until airbag light goes out then release. It should say test mode on pack.
Keep pressing and releasing trip button until it shows tacho in on display. Compare to what needle shows.
If when you start car, the needle returns to zero, you can do same thing without starting car, just turn to position 2 instead of starting. If reading shows one thing and needle is off, you need pack.
#3
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FJT, that's really a cool feature to be able to use the 'test' mode to check on some things, only ever heard about that from this forum. How can we find out what all of the modes are using this? is it documented somewhere, or only technician knowledge only?
Which model years for the x, s, xk and xj does this work on? Sorry, just curious.![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
Which model years for the x, s, xk and xj does this work on? Sorry, just curious.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
#4
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They do not provide the info to us either really. Justiind of figure it out as we go.
All Xs, 04+ Xj, 03+ Stype, I think 03+ XK. Maybe you can check that and let us know. If not 03 XK, definitly 07.
Lots if info in that screen. Test lights, gauges, pull codes, fuel levels, speedometer checking, tach, lots of others that we have still to figure out LOL
All Xs, 04+ Xj, 03+ Stype, I think 03+ XK. Maybe you can check that and let us know. If not 03 XK, definitly 07.
Lots if info in that screen. Test lights, gauges, pull codes, fuel levels, speedometer checking, tach, lots of others that we have still to figure out LOL
#5
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Ahhh sorry....too far away for me.
As annoying as the tach issue is, you may learn to live with it when you find out the price of the pack. Alternative may be to get one from a junkyard? I am pretty sure it can be programmed to your car as a new module, but cannot confirm that.
As annoying as the tach issue is, you may learn to live with it when you find out the price of the pack. Alternative may be to get one from a junkyard? I am pretty sure it can be programmed to your car as a new module, but cannot confirm that.
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