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Bluemanx
Samba Member
Joined: March 12, 2013
Posts: 66
Location: California
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 Posted: Sat Jul 19, 2014 8:28 pm Post subject: What the heck? |
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I've been in and out of being around VWs for 45 years. I'm working on the Blue Manx .... throwing away the old plug wires and I find this. It has VW stamped in very small logo. My guess it's a pick up for a tach. Did VW have tachs as accessories? Is that what this is ? Or something else?
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Lo Cash John
Samba Member
Joined: February 06, 2004
Posts: 2246
Location: Jacksonville, FL
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| Posted: Sat Jul 19, 2014 8:46 pm Post subject: |
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An inductive tach sensor probably. It uses copper windings to detect the EM pulse in the plug wire.
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monomanx
Samba Member
Joined: September 25, 2004
Posts: 715
Location: Southeast
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| Posted: Sat Jul 19, 2014 9:21 pm Post subject: |
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| My 74 westy had this as well. I assumed it was for the dealership to plug in and verify engine RPMS while working on setting the engine up (especially due to emission stuff on the engine)\ |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20377
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Sat Jul 19, 2014 9:36 pm Post subject: |
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| monomanx wrote: |
| My 74 westy had this as well. I assumed it was for the dealership to plug in and verify engine RPMS while working on setting the engine up (especially due to emission stuff on the engine)\ |
Most likely....
Dale
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Bluemanx
Samba Member
Joined: March 12, 2013
Posts: 66
Location: California
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| Posted: Sat Jul 19, 2014 9:52 pm Post subject: |
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Ya, that might have been useful if I'd stated the engine it came off of. A '74 dp 1600. I had wondered about a service gadget, since it had the vw logo.
Thanks for the replies.
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