| [ Total Views: 2379 | Total Replies: 7 | Thread Id: 14864 ] |
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 Jenny
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| posted on October 23rd, 2003 at 10:24 AM |
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Vehicle Speed Sensor (VSS)
Hi all, those of you with Subaru EFI, how are you all deriving the VSS signal required by the Subaru ECU/ECM?
I've read a few posts elsewhere saying that the Subaru vehicle speed sensor can be replaced by a hall sensor circuit and some magnets mounted to
the drive shaft or other part that rotates when the vehicle is moving. Has anyone got a circuit diagram for this hall sensor circuit?
Any info, pictures or advise would be greatly appreciated!
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Brad
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| posted on October 23rd, 2003 at 01:25 PM |
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VSS
Yoyu can machine up aring that bolts onto your CV Flange, mount magnets on it and it will act like the VSS. Geoff at K3 Auto Electrics in teh Valley
told me all about it. Talk to him, he is a very very handy guy to know when it comes to wiring weird and wacky engines.
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Baja Wes
Bishop of Volkswagenism
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| posted on October 23rd, 2003 at 01:36 PM |
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I don't have experience with the subaru VSS, but I do with my Mazda one.
The front cut I bought had two speed sensor, piggy-backed on top of each other. One was for the ECU, and the other one was for the 4 wheel
steering.
I have only used the ECU one. I got both sensors with my front cut, so I just connected the VSS to my VW speedo cable, and kept the 4WS one as a
spare.
This had the added advantage of letting me run the Mazda instrument cluster. The only prob was the speedo needed recalibrating, as the factory VSS run
through internal gearing in the gearbox (21:25) and the mazda had different tyre sizes. For now I have recalibrated it by making and applying a new
speedo number face (made from a CD label sticker). It looks a little dodgy at the moment as I only made it to stick over the original face, and not to
replace it. It looks better without the camera flash reflecting off it.
The factory speedo only goes to 180kph, so you get an idea of how far it would've been out.
To do it properly I would need to buy an electronic device which recalibrates the speedo, but they are expensive. The advantage would be my odometer
would also be correct.
I'll probably take the lazy option and make a new speedo face up to 260kph like I have now, just neater. The odometer will be out, but the
factory 180kph speed limiter will effectively be 260kph. Not that I am going to go over 180kph anyway...
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Jenny
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| posted on October 28th, 2003 at 04:09 PM |
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Another solution here
http://www.smallcar.com/speeds.htm
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Kombicol
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| posted on October 28th, 2003 at 08:18 PM |
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seen that one a while ago, for caravelle/vanagon only
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busman
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| posted on October 28th, 2003 at 10:02 PM |
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VSS - Can be bought - at a price !
You can purchase a unit which will just plug into the standard T3 speedo, it works for both 2WD and Syncro, having two outputs. It on the expensive
side and only available from overseas. But if you are not handy or just want one which works, check here
http://www.syncro-bernd-jaeger.de/TDI-Umbau/tdi-umbau.html
It's near the bottom of the page.
It's in German though.
Current VW's
T3 1989 Transporter with 2 liiter Golf MKIII engine
T3 1985 Transporter rare 3 seater with 2 liter Golf MKIII engine
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1303Steve
A.k.a.: Steve Carter
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| posted on October 29th, 2003 at 10:20 AM |
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Hi
Im not sue if this will help, I have a Stewart Warner spedo in my car, I had a ratio box made for it to correct speedo error by a company in Sydney
called Speedscreen. Im thinking that you use one of these to turn the stock VSS at the correct ratio.
1302Steve
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Transparu
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| posted on November 25th, 2003 at 07:40 PM |
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Jenny, see your email.
I have a circuit for a 1 component, 3 wire VSS that is free as long as you have 4 magnets and the wire! It is not my design. It uses an Allegro
UGN3060KA IC which may be obtained as a sample (up to 2 of them) from Allegro in the US. . V E R Y simple, but it has been working in my '82
Transporter with '93 EJ22 for nearly a year.
A file is attached.
Dave
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VWCOOL
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| posted on November 26th, 2003 at 10:26 AM |
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| Quote: | Originally
posted by 1302Steve
Hi
Im not sue if this will help, I have a Stewart Warner spedo in my car, I had a ratio box made for it to correct speedo error by a company in Sydney
called Speedscreen. Im thinking that you use one of these to turn the stock VSS at the correct ratio.
1302Steve
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Yep. For electronic speedos, ChipTorque have an electronic calibrator that alters the PPK (pulse per kilometre) of a VSS to correct speedo readout.
Proivided you already have a VSS, of course... Castlemaine Rod Shop and Pat Gardner V6 Conversions also have similar products, I think. CRS also make
a co-axial cable drive adapter that you may be able to mount a VSS from a Commodore or something to a cable speedo, provided the PPK output is
similar. What is teh speedo driver of your conversion - cable or electronic?
Pay your debts, CxxT
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Jenny
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| posted on December 3rd, 2003 at 07:03 AM |
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The Aussie mob YellR also make speedo recalibrators that alter the vss signal.
http://www.blackrobotics.com/index.htm
At the moment my kit car does not have a speedo cable. I plan on installing a Mazda RX-7 series 6 instrument cluster, so the circuit and installation
set-up that Transparu sent me ( Thanks Dave!)sounds like the way to go at the present.
If I had the speedo cable then I might try the Commodore vss like Kombicol's new setup.
Thanks for your help.
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