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RE: Knock Sensor Question



> Do you have audible ping?.

Yes, when the engine temps are over 190 or so and I use 87 octane gas.... If
I use higher grade gas, I have no audible knock.

> Have you run diacom on it?.

yes, before the motor swap, Diacom reported knocks... Now it doesn't.

> Have you done any proper tuning?.

When I put the motor in last January, everything was new. Plugs, wires, etc.
etc. Timing is set stock.

I get no audible knock, but I want to make sure there is no knock going on.
Plus, when tuning, I kind of want the protection of the knock sensor
working! I'm thinking that either the knock sensor quit, or the EST stuff is
not working correctly.

Craig




> Grumpy
>
> > I've heard people having similar problems to what you describe, but I'm
> > actually having a different problem. I don't get any retard! Everything
> was
> > working fine before I had the motor rebuilt, so that's what got me
> wondering
> > if I screwed it in too tight, or not tight enough.... or maybe my knock
> > sensor is just no good anymore.
> >
> > Craig M.
> >
> > ----- Original Message -----
> > From: "D Kunnath" <djktno@engin.umich.edu>
> > To: <gmecm@diy-efi.org>
> > Sent: Thursday, June 22, 2000 4:27 PM
> > Subject: Re: Knock Sensor Question
> >
> >
> > >
> > >          How "safe" is it actually to do this?  I have a knock sensor
> > > problem with my 91 LB9...no audible knock and quality gasoline.  Can't
> > > solve the problem.  Replaced the prom, but still get intermittent
> > codes...I
> > > wouldn''t mind a fix real soon since every time I hit the gas I get 20
> deg
> > > retard right away.  Really slows the thing down quite a bit.
> > >
> > >          DK
> > >
> > > At 01:42 PM 6/22/00 -0700, you wrote:
> > >
> > > >Hi Craig,
> > > >
> > > >I had a problem with the sensitivity on my 92LT1. Ended up using a
> > straight
> > > >+ 45 degree M/F 1/4 pipe fittings to move away from the block. Now it
> > works
> > > >great. The teflon tape and less torque deal did 0 for me.
> Just remember
> > > >before you do any of this make sure you have no audible
> detonation and
> > the
> > > >plugs show no signs of detonation.
> > > >
> > > >                                 Jim
> > > >
> > > >
> > > >
> > > >-----Original Message-----
> > > >From: Craig Marcho <not_valid_email@airmail.net>
> > > >To: gmecm@diy-efi.org <gmecm@diy-efi.org>
> > > >Date: Thursday, June 22, 2000 1:17 PM
> > > >Subject: Knock Sensor Question
> > > >
> > > >
> > > >Seems I read somewhere you can 'adjust' the sensitivity of the knock
> > sensor
> > > >by using teflon tape on the threads, or screwing it in tighter or
> > looser....
> > > >can someone verify this and explain how this works? This is
> for an '85
> > > >L98.....
> > > >Thanks!
> > > >Craig M.
> > > >
> > > >
> > >
> >
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