DIY_EFI Digest V3 #412

[Shannen Durphey]

Joe Boucher wrote:
> 
> >
> >
> > From: Shannen Durphey <shannen at mcn.net>
> > Date: Thu, 03 Sep 1998 23:56:16 -0600
> > Subject: Re: ESC diagnostic
> >
> > Lessee, knock box maintains 5v on sensor line.  Sensor produces a/c
> > voltage, so any change from 5v within reason means knox.  Mebbee test
> > lamp to battery positive and sensor line, in rapid on/off fashion will
> > give desired results.  It's what I'd try...12V seems high.
> > Shannen
> >
> 
> Yes, this is a GM and the one on my Suburban.
> 
> Well, guess I'll try setting up the test again and instead of just making a contact, I'll see how fast I can move my hand and make and break the contact to the battery while holding the timing light
> with my other hand.
> 
> How's that for a mechanical solution to a 555 circuit?
> 
> Joe (Primitive) Boucher
> '70 RS/SS Camaro  '81 TBI Suburban

Just remember not to set the circuit timing so as to cause cramps.
Shannen