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Topic: Speedo Needle Stuck (Read 925 times) |
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Paul B
Senior Member
'98 24V Ultima saloon
 
Posts: 2442
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Speedo Needle Stuck
« on: May 16th, 2007, 6:35pm » |
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As per title.. its stuck... right round at the maximum.
It happened when the needles all spun round through having a dead battery.
But the speedo one won't come back.
I know someone had this problem before. Long time ago though. How do I fix it? 
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Dave2302
Senior Member
2006 Mercedes S55 AMG, Retired Barefoot Waterskier
Posts: 1119
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Re: Speedo Needle Stuck
« Reply #1 on: May 16th, 2007, 6:40pm » |
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Hi,
Remove clock set, turn it upside down and thump it ! Not too hard LOL, then if it returns freely refit it all. Switch ignition on before putting all the trim back in, in case it sticks again.
Regards Dave
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Dave "The 'ol Bear" ex Footer !
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
Posts: 6278
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Re: Speedo Needle Stuck
« Reply #2 on: May 16th, 2007, 7:42pm » |
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Fist things fist ... HAVE you tried a reset ! i.e. going through the dashboard check things using the trip button and then switching off and then back on , That can sometimes free it off.
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: Speedo Needle Stuck
« Reply #3 on: May 16th, 2007, 7:50pm » |
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hi there
ford says not to turn it up side down.
easiest way is to take off the 'wooden' surround,
then the 4 screws to the dash 'glass'.
reset the dash again and replace everything.
hth
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Paul B
Senior Member
'98 24V Ultima saloon
Posts: 2442
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Re: Speedo Needle Stuck
« Reply #4 on: May 16th, 2007, 10:43pm » |
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I haven't done the dash diagnostic thing, no.
All I've done so far is disconnect & reconnect the battery to get them flicking.
Oh, and I've given the dash top a technical whack too 
I'll try the reset in the morning. Then I guess its off with the 'wood'
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heliphil58
Junior Member
Scorpio 2.3 saloon 97
Posts: 68
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Re: Speedo Needle Stuck
« Reply #5 on: May 17th, 2007, 8:19pm » |
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Hi the first time when my speedo did the same thing i thought i would have to take out the dash i started to remove it got the wood off and tried a reset and it worked. my battery went down after not using the car last week and had to boost it and speedo stuck again heres how i did it this time switch ign on hold reset button till mileometer changes to test switched of ign and on again speedo reset now fine again
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ragnor
Newbie
I'm a YaBB newbie!
Posts: 7
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Re: Speedo Needle Stuck
« Reply #6 on: May 18th, 2007, 2:47pm » |
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Hi all, I've got a scorpio 2Lt 1995 mod. i've got a prob with the speedo not working. When batt removed and reconected the needles on both the speedo & rev-counter flick & come to rest but when driving speedo don't work. Having looked through the other postings I took it that the V.S.S was not working. Having change this unit it speedo still not working. Is there a way of testing the unit or is it a matter of change unit & hope 4 the best? I'd like to take the car 4 a drive it's past the M.O.T but these probs have croped up. Any & all advice would be very helpfull. Ragnor33 (newboy) (Not only to the forum but to scorpios as well)
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RAGNOR
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Speedo Needle Stuck
« Reply #7 on: May 18th, 2007, 3:45pm » |
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@Ragnor
Could very well be loom problems. There is a set of wires going from the VSS on the gearbox, and up along side the engine, left hand side when looking from the front. I had to change these on mine (Speedo and reverse lights were dead). Got a second hand one off a member here. Takes half an hour to change.
Check if your reversing lights work, if not, then all my bets are on that loom.
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ragnor
Newbie
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Posts: 7
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Re: Speedo Needle Stuck
« Reply #8 on: May 18th, 2007, 4:32pm » |
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2 kjetil. Reverse lights are working but still no speedo any other thoughts on this prob? Thanx for the input. (This is an ex site 4 info, expertise better than most garages). Ragnor.
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RAGNOR
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Speedo Needle Stuck
« Reply #9 on: May 18th, 2007, 5:41pm » |
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It could still be the loom, but just less likely. If you have the tools, you can get underneath and use a multimeter on the loom, to check for continuity. If you disconnect both ends, you could try grounding one side and put the meter on the other side. That won't uncover poor insulation, but it should uncover continuity problems.
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: Speedo Needle Stuck
« Reply #10 on: May 18th, 2007, 5:45pm » |
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Hi Ragnor, is it an auto? bad signal from the VSS will also mess up gearchanges so if it's an auto and it's changing gear ok, your problem lays elsewhere in the circuit. Could even be a fault in the instrument cluster but it's an expensive thing to change, even second hand. As Kjetil says though, it could be a wiring problem - your is an early car and the looms are prone to becoming brittle and damaged with age.
If you can get hold of a scope, you could check for the square wave signal the VSS sends at the ECU, this would mean both the sensor and loom were working ok.
Good luck.
Regards, Bruce.
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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ragnor
Newbie
I'm a YaBB newbie!
Posts: 7
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Re: Speedo Needle Stuck
« Reply #11 on: May 18th, 2007, 6:35pm » |
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Thanx for the info (both)! Will try your surgestions some time this week end. (After my sons finished racing his mini stocks), this means i'm working in the dark (ha ha) either way.
Once again thanx. Ragnor.
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RAGNOR
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harry.m1byt
Full Member
What's YaBB?
Posts: 792
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Re: Speedo Needle Stuck
« Reply #12 on: May 19th, 2007, 9:58am » |
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on May 16th, 2007, 6:35pm, Paul B wrote:| As per title.. its stuck... right round at the maximum. |
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I think you will find it is stuck behind the pin at minimum rather than maximum.
The pin stop is a flexible plastic and what worked once for me was to drive it, giving the top of the dash a good thump at speed.
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