Holley 4 Brrl gm ecm

[Shane Buss]

ive got a serious problem.. 2 dead cylinders.. they have been causing all
this.. never suspected it because how can your car be running GREAT, you put
a 4bbl on top, and it never runs right again?

BUT i compression checked it.. weird huh?
we'll see
----- Original Message -----
From: "Shannen Durphey" <shannen at grolen.com>
To: <diy_efi at diy-efi.org>
Sent: Sunday, May 21, 2000 3:15 PM
Subject: Re: Holley 4 Brrl gm ecm


> Do you have a scope or noid light to confirm that the ecm is not
> triggering the injectors?
> 27" of vacuum sounds like a pretty strong signal to me. Have you
> checked it with a guage?  Are you reading the Diacom info correctly?
> Any chance you're on ported vacuum??  Lots of directions to go, you
> should have some diagnostic tools to work with.
> Shannen
>
> Shane Buss wrote:
> >
> > Here's what i got guys..
> >
> > car starts.. idles fine for 5 seconds.. then it revs up a little, then
quits
> > spraying and dies..
> >
> > The ecm is cutting the fuel out, and my map sensor reads only 27HG.. i
> > cannot find ANY vacuum leaks, and i dont think i have any.. i tried 2
map
> > sensors..
> >
> > i think my ecm might be fried, but diacom shows correct readings for
> > everyone other sensor..  i pulled the vacuum line to the map sensor and
> > sucked on it as hard as i can, diacom showed 22HG.. sound right?
> >
> > THanks,
> > Shane
> >
>
> --------------------------------------------------------------------------
--
> > To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> > in the body of a message (not the subject) to
majordomo at lists.diy-efi.org
> --------------------------------------------------------------------------
--
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org