Re: acceleration stumble

[Squash <realsquash@yahoo.com>]

I had a similar problem (aujp/730, tho) and I ended up having to set my PE to start up at 2000
rpm/25% throttle.  I could not get enough fuel from the VE tables or anything else I tried.  Now
she smokes right along!  

Squash

--- chetwagner@uswest.net wrote:
> 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@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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> > 
> 
> 
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=====
Trains, Trucks, and EFI at http://www.trailrunners4x4.org/users/realsquash

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