bloody speedo playing up! - Transmission Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: bloody speedo playing up!

hovis16

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Location: Reading/parts for sale

Registered: 21 Nov 2008

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Post #1

my speedo is starting to play up again Dry

recently changed my vss sensor (was second hand) and it was all good until the shit weather came back Sad

im thinking my problems could be down to not having good earthing points? i seen somewhere that the main one is in the engibe bay somewhere.any ideas before i just go buy a new vss sensor or beat the car up Whistle

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Posted 15th Dec 2009 at 03:20

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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #2

Buy a satnav Wink

You don't need a working speedo for the MOT anyway LOL

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Posted 15th Dec 2009 at 15:48

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chrisd306

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Location: Perth Scotland

Registered: 26 Nov 2005

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Post #3

Stick on an extra earth on the gear box to chassis as i had this problem, and since doing that its been fine, does your speedeo and rev counter just drop off then comes back?

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Posted 15th Dec 2009 at 18:15

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ant_kernow

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Post #4

chrisd306 wrote:

Stick on an extra earth on the gear box to chassis as i had this problem, and since doing that its been fine, does your speedeo and rev counter just drop off then comes back?

mine does what you discribed....

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Posted 15th Dec 2009 at 21:18

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chrisd306

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Location: Perth Scotland

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Post #5

asll i done was remove the bit where it screws/plugs in and then it didnt do it as much, then i stuck another earth on from the front of the gearbox to the slam panel, and has been fine since, i used a earth cable from a amp wiring kit, all been good since

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Posted 15th Dec 2009 at 21:36

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hovis16

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Location: Reading/parts for sale

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Post #6

Im goin to have to try this then gettin fed up of it dying and jerking like a wild buck

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Posted 16th Dec 2009 at 01:15

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maz-306-xs

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Location: Folkestone

Registered: 04 Feb 2008

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Post #7

mine does it too only on a few select roads though. quite funny i think

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Posted 16th Dec 2009 at 01:22

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ice-306

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Location: little dunmow

Registered: 16 Oct 2009

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Post #8

having the same drama will try the above

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Posted 16th Dec 2009 at 02:55

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pete_rallye

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Location: Yorkshire

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Post #9

The speedo on the dash is wired directly to the vss. There is only 3 wires, a 12v live, an earth and a 'switch' live which is the wire that goes to the dash. It does also split and go to the ecu but don't worry about that, doesn't affect the dash.

Get a multimeter and test you have a good 12v supply, then test the earth. If they are ok its likely to be the vss, the wire to the dash or the dash itself. To test the vss you really need an oscilloscope. The wire goes into the blue plug I think on the back of the dash so you can test continuity of the wire there. Dunno how you'd test the dash though.

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Posted 16th Dec 2009 at 03:09

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jammamayhew Banned!

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Post #10

seems quite common and mine does this. Sometimes its fine. Sometimes i start her up and it constantly reads 0mph. Then after a while it Will kick in.

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Posted 24th Mar 2013 at 08:02

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welshpug!

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Location: Bigend, Wales.

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Post #11

. 4 year bump, have you had a bump to the head jamma?!

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Posted 24th Mar 2013 at 08:18

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jammamayhew Banned!

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Post #12

just useful info bump

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Posted 24th Mar 2013 at 08:49

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welshpug!

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Post #13

So your car is a neglected s**tter too then? LOL

All you need is a new vss

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Posted 24th Mar 2013 at 08:51

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jammamayhew Banned!

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Post #14

it was fine until the dash was changed to my led metal monkey one. So thinking it could be something to do with dash or earth?

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Posted 24th Mar 2013 at 08:58

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dangti6

aka JKshooter

Location: Taunton, Somerset

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Post #15

Hope it works when you take it for an MoT

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Posted 24th Mar 2013 at 09:01

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jammamayhew Banned!

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Post #16

over 10 months till Mot is due. How much is a VSS out of interest?

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Posted 24th Mar 2013 at 09:07

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Niall

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Post #17

about £45

Posted 24th Mar 2013 at 09:26

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #18

Yep, as said it's likely to either be the VSS itself or the lack of an Earth connection. Yes

You shouldn't need to add extra Earth cables really, just ensure the current ones are present and the connection points are clean and tight. Yes

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Posted 24th Mar 2013 at 09:49

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6waysforward

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Post #19

My speedo randomly drops off for a min or so then comes back. I have a new vss sitting here but its to dam cold out to fit it LOL

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Posted 24th Mar 2013 at 21:47

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beez_neez_gt

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Post #20

Would the VSS be the cause for my speedo to zip straight to almost max speed just after start up, it goes back down after a mo ?

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Posted 25th Mar 2013 at 13:30

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rikky Pikey

Location: cheshire

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Post #21

why would VSS matter for mot? LOL

and you can get them for about £10 from a motor factors

rikky wrote:

I have another here actually as I never fitted mine to the HDI. it's a MEYLE one and their part no is 40-148990000 and is for oem part no 616070

from another thread

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Posted 25th Mar 2013 at 13:35

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dangti6

aka JKshooter

Location: Taunton, Somerset

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Post #22

rikky wrote:

why would VSS matter for mot? LOL

Speedo. They check it's operational as part of the test now don't they?

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Posted 25th Mar 2013 at 13:39

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stan_306gti6 Forum Admin

Location: Kent

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Post #23

dangti6 wrote:

rikky wrote:

why would VSS matter for mot? LOL

Speedo. They check it's operational as part of the test now don't they?

I'm not sure, do they? How? I suppose the only way would be to run the vehicle in the brake rollers and ensure that the speed starts to raise.

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Posted 25th Mar 2013 at 13:43

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rikky Pikey

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Post #24

wasn't aware of that as it'd involve mot testers driving the car..

we only run cars stationary for emissions / testing exhaust and brake testing but that's it

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Posted 25th Mar 2013 at 13:44

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dangti6

aka JKshooter

Location: Taunton, Somerset

Registered: 15 Jun 2006

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Post #25

Perhaps when they jack the car up on the subframe to give things a shake and a wiggle they will run the car in the air to see if it moves?

Or look down at the dash when they drive the car on to the ramp.

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Posted 25th Mar 2013 at 13:47

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