Re: IAC parameters

[Shannen Durphey <shannen@grolen.com>]

Barry Tisdale wrote:
> 
> Hi, Bruce -
> 
> Progress?  Not recently; testing is suspended while the 8-10" of snow
> dissipates.....):}E
> 
> The idle quality was what got me into chipping in the first place - it
> pained me for a *cold* engine to fire right up & idle @ 1400 rpms or so.  I
> have to do more work on closed loop idle; got the idle rock solid by upping
> the closed loop enable temp to 130°F; by that time, its warm enough to be
> stable. 'Hunting' all over otherwise.
> 
> ECU test bench question:  I've got a 7749 set up on the bench, only inputs
> right now are knock sensor & RPM & MPH (both using the *same* 555 output -
> bizarre numbers....).  Per the ALDL data stream, injectors are firing, but
> injector hooked to the output line(s) does *not* fire.  Maybe *all* the
> sensors need to be connected??
I'd put some resistance in for CTS, MAP at a minimum.  Try grounding
the ALDL, too.  Have you got an actual injector or lights?
Shannen
> 
> One thing I've really learned is that you have to burn a chip specific for
> *your* engine and combo of parts/mods.  Soon's as I get all the mods in
> place, I'll work on getting the right chip parameters completely.  If such
> jobs are *ever* done, that is.....
> 
> Thanks for the reply - Barry - Sy#26
> 
> At 06:58 AM 01/22/2000 -0500, you wrote:
> >I'd try at
> >065C
> >065D
> >Have you made any progress?.
> >Grumpy
> 
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