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Topic: Erratic Gearchange & Speedo (Read 574 times) |
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Seans_Dad
Junior Member
Devizes, Wiltshire, UK.
Posts: 77
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Erratic Gearchange & Speedo
« on: Oct 6th, 2008, 8:28pm » |
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Hi all,
My 2.9 Cosworth has some teething troubles.
The gearchange is very erratic at all speeds, but once in top it drives lovely. The Overdrive does kick in, as I've switched the button on & off, and the 'box changes gear accordingly.
The other niggle, is that the speedometer needle will not read any higher than 25mph!! Even at motorway speeds, according to the speedo I'm doing 25mph  
I'm wondering if the two problems are related, and that the Vehicle Speed Sensor needs replacing. It looks like a dead easy job to do, but I would like some opinions before I go and get my hands oily 
I will also clean up the MAF at the same time, and maybe even change the 'box fluid & filter.
What price can I expect to pay for a new VSS, and where would be the best place to obtain one??
Thanks guys 
P.S It's a Ghia 2.9 24V Cosworth Estate, '94 (M) with 77,000 miles, and no rust ANYWHERE!! So much better than the 2.3 Ultima I had last.
Dan.
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'96 Ghia Estate 2.0 16v 5 speed manual
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: Erratic Gearchange & Speedo
« Reply #1 on: Oct 6th, 2008, 9:34pm » |
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Yep the two are related, the gearbox uses the info from the VSS, has it just started doing it?
It may just need a clean, they are inclined to stick a bit, especially if the car has been sitting for a while.
I think the last time someone mentioned buying a new one it was around £20 for the sensor itself from
www.Fordpartsuk.com
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy! |
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Seans_Dad
Junior Member
Devizes, Wiltshire, UK.
Posts: 77
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Re: Erratic Gearchange & Speedo
« Reply #2 on: Oct 6th, 2008, 10:29pm » |
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Thanks for that Highlander, I thought the two issues were related.
Yes, it only started doing it a few days ago, the speedo was working OK when we first collected the car.
What would be the best thing to clean it with? I have some brake & carb cleaner in the shed, the same stuff I use to clean the MAF, would this be any good?
The Ford Parts website you have linked to doesn't list a VSS for a Scorpio But I'm certain Ford could still supply one if needed?
Dan.
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'96 Ghia Estate 2.0 16v 5 speed manual
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Erratic Gearchange & Speedo
« Reply #3 on: Oct 7th, 2008, 12:58am » |
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on Oct 6th, 2008, 10:29pm, Seans_Dad wrote:The Ford Parts website you have linked to doesn't list a VSS for a Scorpio
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You have to fill out the parts request form, they'll Email back with a quote.
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ABS multiplug wheel sensor pins MK IV or MK 20
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Seans_Dad
Junior Member
Devizes, Wiltshire, UK.
Posts: 77
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Re: Erratic Gearchange & Speedo
« Reply #4 on: Oct 7th, 2008, 7:41pm » |
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on Oct 7th, 2008, 12:58am, Tompion wrote:
You have to fill out the parts request form, they'll Email back with a quote.
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Thanks Tompion, I've gone back and filled in a request
Dan.
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'96 Ghia Estate 2.0 16v 5 speed manual
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Seans_Dad
Junior Member
Devizes, Wiltshire, UK.
Posts: 77
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Re: Erratic Gearchange & Speedo
« Reply #5 on: Oct 12th, 2008, 10:07am » |
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I've been quoted £71 inc delivery for a new VSS from Fordpartsuk!!!!
I will be cleaning up the one already fitted first before I part with my money.
Dan.
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'96 Ghia Estate 2.0 16v 5 speed manual
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