Tach Signal for 20v engine in type 85

[Mihnea Cotet]

Thanks Bruce!

I'm still waiting for a copy of the original type 85 coupe quattro wiring
diagrams to arrive in order to be able to hook up the signal from the coil
to the dash...
I'll let everyone know if it works or not because right now my car is still
tach-less..

Mihnea


At 16:52 17/09/2002 -0600, Bruce Bell wrote:
>For the 3B you should be able to take the signal from the coil. If you want
>to use the ecu, required with the AAN, then you must send the tach out for
>Conversion to Motronic 5 Cyl signal
>
>here are quotes from someone with a BTDT with an AAN into his urq.
>
>"Well, the tach modification appears to have worked. FWIW, the movement
>appears to be more damped than previous, but not excessive damping.
>In fact, it looks pretty good."
>
>He sent his to:
>
>North Hollywood Speedometer
>6111 Lankershim Blvd.
>North Hollywood, CA  91606
>
>(818)761-5136
>Fax (818)761-4857
>
>For the AAN you will also need a signal to pin 50 for the vehicle speed
>sensor. Try using the speed sender on the back of your speedometer, the one
>that drives the cruise control. One side to ground, the other to ecu.
>
>"So there I was...rolling down the expressway...and "blink"
>goes the check engine light....read the code and 1231....
>Vehicle Speed Sensor."
>
>Bruce
>
>
>-----Original Message-----
>From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
>Behalf Of Mihnea Cotet
>Sent: Tuesday, September 17, 2002 12:34 PM
>To: Alan Kramer; quattro at audifans.com
>Subject: Re: Tach Signal for 20v engine in type 85
>
>
>Alan,
>
>
>I can't answer your question for the moment because my 3B coupe quattro
>doesn't have the tach hooked up yet, but I'd like to hook the Motronic
>signal to the normal entry point if I could find it... could you tell me
>where you hooked it up? Or did you use the existent ignition coil wiring
>harness?
>
>Thanks,
>
>
>Mihnea
>
>
>'85 Coupe quattro 20vt
>
>
>At 10:01 17/09/2002 -0400, Alan Kramer wrote:
> >For those of you out there using a 20v motronic ecu with a type 85 tach,
>are
> >you using the tach signal from the ecu to drive the tach or tapping into
> >terminal 1 of the coil and driving the tach similar to the way it was in
> >stock type 85 form?
> >
> >Thanks,
> >Alan
> >
> >'83 CGT 20vt
> >'90 v8q
> >'86 4kcsq
> >
> >_________________________________________________________________
> >MSN Photos is the easiest way to share and print your photos:
> >http://photos.msn.com/support/worldwide.aspx
> >