DFCO, What is it good for?

[Mark Romans]

Yes, the injectors went to zero pulse width because the engine thought it
was in decel.  A hair more throttle and it was smooth.  Less than 3%
throttle is the enable % and more than 3%, no DFCO.
Mark
-----Original Message-----
From: Shannen Durphey <shannen at grolen.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Saturday, March 20, 1999 11:04 PM
Subject: Re: DFCO, What is it good for?


>Mark Romans wrote:
>>
>> 4) DFCO,  it would stay enabled to too low an rpm.  Stall.  Also with
11.1
>> to 1 compression the load values changed and at less than 3% throttle at
say
>> 25 mph around town in 2nd gear, at a steady state rate of speed,  DFCO
would
>> suddenly decide to kick in.  JERK JERK.
>> Had to lower the enable value.  Also had to lower the resume.
(Hysterisis
>> pair).
> Sounds like symptoms I ran into once.  Never cured it, and haven't
>been in a position to try, but still wonder.
>
>Was this jerking pretty violent, say like shutting key off, turning
>key on?  If you increased the throttle opening while it was happening,
>did the symptoms dissappear?
>Shannen
>