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Audi/VW ref/sync

PostPosted: Wed Mar 23, 2011 9:20 am
by Scott@FP
Have a hybrid sort of Audi here, appears to have a 60-2 Hall ref and a Hall 4 slot sync with two long teeth followed by two short teeth, is OEM mode 59 correct? Is there a data sheet on this with CRiP etc.?

Thanks,

Scott

Re: Audi/VW ref/sync

PostPosted: Wed Mar 23, 2011 4:38 pm
by MarkMc
Hi Scott,
The mode is 17. See the attached picture for some detail. The mode is very common but there are a few different CRIP as it is used on 4, 6, 8 cylinder engines. Generally the CRIP will be 60 or 90 or 420 (360 + 60) or 450 (360 + 90). The main thing you must be aware of is the sync sensor can have different polarity, i.e. the signal may go either low or high when at the tooth so trying to work out the CRIP by just looking at the physical teeth may mean you are out by 360 degrees.

Re: Audi/VW ref/sync

PostPosted: Fri Mar 25, 2011 10:21 am
by Scott@FP
Thanks, just what we need.

Re: Audi/VW ref/sync

PostPosted: Sun Nov 27, 2011 12:30 am
by debamassi
Scott,
make sure that impulse wheel is not bent on Greg's motor. Let me know if you need help.

Re: Audi/VW ref/sync

PostPosted: Wed Apr 18, 2012 9:02 am
by Scott@FP
OK, getting back to this project now, would mode 17 still be OK for the 1.8T with the solenoid (on/off) VVT system? Belt drives exh cam, chain between exh and intake, sync on intake, VVT works by reversing slack side in chain between exh/int, its either on or off and ~20 crank degrees movement, so sync would be changing 20 degrees.

Re: Audi/VW ref/sync

PostPosted: Thu Apr 19, 2012 10:24 am
by Scott@FP
Simon got me, mode 17 will tolerate the sync moving.

Re: Audi/VW ref/sync

PostPosted: Thu Apr 19, 2012 4:28 pm
by MarkMc
For everyone else. A lot of these modes, including 17, are for variable cam engines as well so the Sync can move around.