acceleration stumble

[Carl Summers]

I am a little lost.....are you using an AUJP.bin with your 4
cylinder????....sorry if you've already stated.....what computer, what
starting .bin and what engine again??? What distributor????
-Carl




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-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of chetwagner at uswest.net
Sent: Monday, September 11, 2000 1:07 PM
To: gmecm at diy-efi.org
Subject: Re: acceleration stumble


An update on the accel stumble, and the results are less than good.
I still have the problem of the engine leaning out during acceleration.
 When starting from a standing stop, the engine leans out and has
no power and tries to shake everything apart from bucking so hard.
It does this for about 3-7 seconds then clears up, but only when the
engine goes back into closed loop.  The strange thing is that the
engine does not do this when in openloop.  I am using the SyTy
code as a backup for now, but it only runs with the 2 bar setting on
and running a 1 bar map.  Has anyone converted this code to a NA
engine?  If so, let me know what you did.

On 7 Sep 2000, at 21:34, chetwagner at uswest.net wrote:

> Here is one to get your gears turning.  This is in reference to the 8D
> code chips(ANHT, AUJP, HOWELL730, and so on.  The engine
> idles great and runs great once you get up to speed, but right of
> idle, the engine goes extremly lean and almost dies.  No amount of
> accelerator pedal travel will clear the problem.  The only bin that
> does not do this is the howell bin, but it has an idle problem(more to
> come later).  I have changed everything relating to the accel enrich
> functions, but nothing helps.  The only thing keeping my from
> running this code in my conversion, so any insight into this problem
> would be greatly appreciated.  BTW, I am using it in a 1.7L 4 cyl
> engine with port injection.
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