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Author Topic: Erratic speedo and rev counter dials  (Read 1038 times)
parnell
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« on: May 02, 2022, 08:58:19 »

So my beloved Xevo 400 is coming up on 50tkm - its been great - but last week I noticed that the dash is behaving a bit erratically with the speed and rev counter dials bouncing around a bit - and the low oil pressure light occassionally coming on for a couple of seconds. I checked the oil level - all fine of course but this morning the MOT invitation letter came from the local Swiss authorities. Im guessing its a little bit of water in the fuses or at the contacts for the digidash but it's been so long since I've heard from anyone here I thought I'd see what the clever forum people think.
Thanks as always ,
Rob
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« Reply #1 on: May 02, 2022, 09:06:25 »

Hi Rob,
It does sound like a connection issue to me as well, could be water, corrosion or just loose. Give them all a good clean, including any earthing cables, and hopefully it will solve your issues.

Bob
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parnell
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« Reply #2 on: May 02, 2022, 09:19:00 »

Thanks a lot Bob - will get to it and report back. Hope all well with you and yours.
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Dave Milnes
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« Reply #3 on: May 02, 2022, 09:42:51 »

Would it affect the MOT, it probably wouldn't in the UK as long as they can read the odometer. Probably just a dry connection.
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
parnell
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« Reply #4 on: May 02, 2022, 11:17:25 »

Would it affect the MOT, it probably wouldn't in the UK as long as they can read the odometer. Probably just a dry connection.
Sadly yes - they're very particular in dear old Switzerland - I read in the workshop manual that it wasn't the oil pressure light that came on for a bit but the "Engine control telltale light and injection system failure warning light" - this light normally comes on for a couple of seconds after I turn the ignition key to on but I wait for it to go out before I press the starter button. I also read on a vespa forum that it might be the voltage regulator on the way out.
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parnell
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« Reply #5 on: May 03, 2022, 07:06:39 »

Think I have it sorted - corrosion on one of the battery terminals - 70 mile ride coming on Thursday will tell. thank you all!
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« Reply #6 on: May 03, 2022, 10:04:55 »

Good, battery connection can create problems. You were also right in that regulator failure resulting in over-voltage can also have similar effects.
In the early days of the X9 regulator failure was a common problem but seems to have been much less of an issue since on newer models.
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
parnell
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« Reply #7 on: May 09, 2022, 20:17:30 »

Thanks a lot guys - no further issues reported after battery terminal issue dealt with.
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