Speed sensor part needed for after market GNX style instrument cluster. It is a small reed switch transducer that fits in a speedometer cable adapter that was made by Arthur Allen Manufacturing. The reed switch is inside a tiny glass bulb molded with a 2 wire lead. It senses vehicle speed and is needed for automatic torque converter lockup and cruise control activation. Believe the dash was made by AVC back in the late '80s. Need the reed switch or entire adapter unit. Allen Mfg. is apparently out of business. Tried World of Motorworks but they can no longer get the part. Thanks! Ron at 832-647-2406
Speed sensor part for after market GNX style dash
- Thread starter 86gnorig
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Thanks, David. I should have mentioned that World of Motorworks tried Casper for me. Their sensor does not fit or work with my setup.
Ron
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you need caspers inline vss sender
http://www.casperselectronics.com/store2/product_info.php?products_id=635
and their vss converter to convert the senders 16 pulse output to 2 pulse gm
http://www.casperselectronics.com/store2/product_info.php?products_id=632
feed that to the stock vss buffer under dash (cut off the optic end)
instructions here
http://www.installationinstructions.com/102046.pdf
http://www.casperselectronics.com/store2/product_info.php?products_id=635
and their vss converter to convert the senders 16 pulse output to 2 pulse gm
http://www.casperselectronics.com/store2/product_info.php?products_id=632
feed that to the stock vss buffer under dash (cut off the optic end)
instructions here
http://www.installationinstructions.com/102046.pdf
Unfortunately, we have discontinued the VSS sensors. AA was the only player in town, and they have gone away, so I'm faced with a dilemma. I might tool up for the part and do a re-design, but all depends on the demand. Sad day that the VSS cable driven senders are gone! Looks like the latest technology is GPS-based and I think that style will be the new kid in town.
No VSS sendors at all? Even the dead head ones on the trans that you run your converter with or just the one that goes in line with the cable that is currently there on an AVC style dash?
There will be demand unless you can convert a gps signal into something the factory ecm can understand... And even then, I don't need a gps device in my car. I have all the chit disabled in my phone as far as the phone will allow...911 only!
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john , wouldnt the autometer part work with your converter?
http://www.summitracing.com/parts/ATM-5291/
http://www.summitracing.com/parts/ATM-5291/
Turbomonte
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I am wondering if this will work. http://www.summitracing.com/parts/PRF-60115/
it is a 2 pulse per revolution already and only 2 wires. One is grounded and the other goes right to the ECM vss input.
The part I am not sure about is being able to use the same signal for the cruise control. If so, you could eliminate the vss buffer.
it is a 2 pulse per revolution already and only 2 wires. One is grounded and the other goes right to the ECM vss input.
The part I am not sure about is being able to use the same signal for the cruise control. If so, you could eliminate the vss buffer.
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that one should work, just cut the optic off the stock vss buffer and wire it in
Turbomonte
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I think I'll pick that one up and give it a shot. My vss went out just before i began installing a powerlogger & WB. My car had the avc dash before I bought it i guess i can just hook it to the wires coming out of the arthur allen vss on the speedo cable.
I believe the GNX used a 2-pulse "Reed Switch" type of inline sender. The other 2 wire design is a signal generator style, basically a sine-wave output. I don't think those will work for direct interface to the ECM.
The other style would be a 3-wire "Hall-Effect" sender which would require a 12 volt source to power it up. There is a great deal of confusion about the VSS senders, especially when you're trying to extract a duplicate signal to satisfy the cruise control module. The original GNX used the two-pulse-two-wire inline sender and hard-wired it directly into the cut off end of the factory VSS Buffer module. This could be helpful:
http://www.installationinstructions.com/FYI/vss-tech.pdf
The other style would be a 3-wire "Hall-Effect" sender which would require a 12 volt source to power it up. There is a great deal of confusion about the VSS senders, especially when you're trying to extract a duplicate signal to satisfy the cruise control module. The original GNX used the two-pulse-two-wire inline sender and hard-wired it directly into the cut off end of the factory VSS Buffer module. This could be helpful:
http://www.installationinstructions.com/FYI/vss-tech.pdf
Do you mean you may have the Arthur Allen vss (transducer) that goes in the speedometer cable? Or the similar Summit vss part? I made the original post in this thread, and I am still looking for a solution. If what you have will work for me, I am interested.
Thanks to all for input on this. I am not clear on why I may need to add a buffer to my existing AVC setup, though. It seems to me that if the Arthur Allen 2-wire 2-pulse per revolution unit worked (before I broke the reed switch), then any 2-wire 2-pulse per revolution vss should work, including the Summit unit cited above. I installed the AVC instruments over 20 years ago, so I don't remember the details very well. The 2-wire lead from the dash to the vss is intact, so I'm hoping I can just substitute the Summit vss if I can't find the Allen piece.
Anyone know if the vss in the Summit link above is really the pulse type, or is it the sine wave type which may not work (per John Spina's post)?
Thanks.
I bought the Summit one and it's the same as the casper's one he used to sell. It goes on the transmission though and then you need his converter to change the 16 pulse signal to the 2 pulse signal needed for cruise operation and to send to the vss buffer. The converter is what actually sends the two pulse signal. The 16 pulse signal is needed to feed most electric speedometers though so this is the route I'm taking when my current vss goes bad.
I need to revive this thread as I am in the same situation as 86gnorig, having the exact same broken vss.
86gnorig,
Were you able to find a suitable vss setup for our GNs?
John Spina,
Summit and Auto Meter show the 5291 sender as available. If I can find one, will it work with your converter? Is there a reed switch available that will work in the vss shown in the photo of the AVC setup? That's the one I have.
Will the 60115 work in place of the AVC unit straight up?
I appreciate the help.
86gnorig,
Were you able to find a suitable vss setup for our GNs?
John Spina,
Summit and Auto Meter show the 5291 sender as available. If I can find one, will it work with your converter? Is there a reed switch available that will work in the vss shown in the photo of the AVC setup? That's the one I have.
Will the 60115 work in place of the AVC unit straight up?
I appreciate the help.
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