Re: TPI '165 pulling timing after Cold start

[Gabe <gellett@earthlink.net>]

I'll reconnect it after work this afternoon and get back to the list with the
results....

Does anyone know the application for APYN???  It was on the GMECM FTP...

Thanks
Gabe

Bruce Plecan wrote:

> > Will it set a code with just the knock sensor itself disconnected?
>
> Generally yes.
>
>  I thought
> > the sensor inputted a frequency into the ESC which then conditioned it and
> fed
> > it into the ECM.  I figured the lack of those frequencies would just be
> > interpreted as a lack of knock.
>
> NO
> The ecm has self testing.
> I will under a given set of circumstanes add a bunch of timing for just a
> moment, and then listen for knock, no knock set a check engine light.
>
> > The ESC module and all associated wiring are intack.  My theory was
> (keeping in
> > mind that I could not burn new calibrations at that time):  It was losing
> power
> > between shifts, I wanted to see if the ECM was taking away advance between
> > shifts, it was.  I thought the disconnected knock sensor would be just
> like a
> > knock free engine to the ECM.  Last night I burnt a couple new chips and
> tried
> > them out, didn't think to reconnect the knock sensor.  Was trying to
> correct
> > cold start (one thing at a time).....
>
> Thte thing to so is get all the oem stuff working right first, and then try
> to tune it.
> Grumpy
>
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