[V8] Ingition sensors
knealeski at sbcglobal.net
Wed Sep 17 08:59:20 PDT 2008
The third wire must go somewhere. The testing for good/bad sensor in the Bentley employs all three studs in the connector.
--- On Wed, 9/17/08, Dave Saad <dsaad at icehouse.net> wrote:
From: Dave Saad <dsaad at icehouse.net>
Subject: Re: [V8] Ingition sensors
To: "V8 Audi Fans" <v8 at audifans.com>
Date: Wednesday, September 17, 2008, 11:52 AM
The timing sensors are two wire devices. I would have expected the
third wire to be a ground shield - but it does not look like it is
connected at all. If someone wants to cut the wire off a dead sensor
you can verify for sure. The brake sensors are two wire with no
On Sep 17, 2008, at 6:56 AM, Tony and Lillie wrote:
> My first question is, where does the third wire com from? I thought
> an ABS sensor had 2-wires? So, is the third just an extra ground or
> I do love the make-it-work mentality, though.
> ----- Original Message ----- From: <dsaad at icehouse.net>
> To: <v8 at audifans.com>
> Sent: Monday, September 15, 2008 2:32 PM
> Subject: [V8] Ingition sensors
> As predicted - I had a timing ref sensor go bad - causing the usual
> start problem. After I got it out, I can see that it does indeed
> "open up" when heat is applied. You can watch the
> resistance rapidly increase to about 2k - then poof - open.
> Actually, both sensors are doing it - meaning that they all fail after
> some period of time. I dissected one of mine, and can see that there
> was no oil or anything in it - they just go bad from heat cycles.
> (btw, there is several thousand turns of 0.002" magnet wire in
> there - probably gage AWG 42.5)
> Now - here is the crazy part
> a wheel antilock brake sensor is the same device, and comes very
> close to physically fitting. I am going to install it and see if it
> works. From my bench testing, these sensors are way more stable
> under heat.
> I am also going to try to rewind my old sensor if I
> can find the wire somewhere.
> Wish me luck...
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