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Audi 100, S4: 1992-1994, A6, S6: 1995-1997 (C4) What is it???


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Last Post: Jun 9, 2011 9:30 PM Last Post By: dbodey
dbodey

Posts: 40
Registered: 08/24/03
What is it???
Posted: May 19, 2011 8:06 PM
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This sensor was in a box that came with an 95 Audi A6 FWD recently purchased. Anyone know its location and the type of sensor?
dbodey

Posts: 40
Registered: 08/24/03
Re: What is it???
Posted: May 29, 2011 10:13 PM   in response to: dbodey in response to: dbodey
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Additional information....it seems to fit the plastic holder on the left side of the automatic transmission near the drive axle flange. The vehicle speed sensor is on the right-hand side of the transmission.
budpalumbo

Posts: 1,456
Registered: 12/09/03
Re: What is it???
Posted: Jun 8, 2011 9:21 AM   in response to: dbodey in response to: dbodey
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It looks like it would be an evap temp sensor or a coolant level sensor. Is there a part number on the box?
dbodey

Posts: 40
Registered: 08/24/03
Re: What is it???
Posted: Jun 9, 2011 9:30 PM   in response to: dbodey in response to: dbodey
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After searching the web, I discovered that this part is the speed sensor that fits into a holder near the left side transmission drive flange. The ETKA part number for the speed sensor assembly is 01F-409-191. The part number that I have is 012-409-191D, but the ....9-191D was unreadable, so I had difficulty tracking it down. Anyway, if you connect an ohmmeter to the two terminals and move a magnet near the stem, the resistance will change from high to near zero. So, the sensor must be a magnetic reed switch?

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