T/S EECIV setup
Bob Wooten
r71chevy at earthlink.net
Sat Feb 16 04:32:29 GMT 2002
This is a multi-part message in MIME format.
------=_NextPart_000_0000_01C1B65F.8EF8C160
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
No idea's here guys?
TIA
BW
-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Bob Wooten
Sent: Friday, February 15, 2002 11:01 AM
To: diy_efi at diy-efi.org
Subject: T/S EECIV setup
A buddy of mine & I have been working on a 87 Ford F150 w/a 302 (Fed not
California) w/the EEC IV EFI setup on it. the problem is that the ECM is
pulling all the timing out of it when there is a load on the engine. It does
not appear to do it when you don't have a load & just rev the motor up. the
first thought was the Knock sensor, but he has bypassed it with a resistor
(don't know what value or anything, someone @ Ford told him how to do it) &
it did the same thing.
Items changed:
Ign Module (with Napa Brand)
CTS
MAT
EGR (it was leaking, & needed it)
ECM
MAP
Items checked:
KS (bypassed)
Fuel pressure (solid)
O2 (responds predictably)
Ign Module (on a checker, as well as replaced with new)
Specifically what he is doing is putting it onto his dyno (IM240 chassis
dyno), & starts to do the normal smog check under power & he noticed that it
pulls all 22 Deg of timing out until it is down to the 10* Base setting. if
he puts it into Neutral & just revs the motor all appears good. one test
that I thought was the tell tale was that he removed the EST (or whatever
Ford calls it), bumped the timing up a BUNCH & then put it back on the Dyno.
He did a pull, & the ECM was not able to pull the timing out & all appeared
to work fine. the engine still had plenty of power & it ran............
Well ............... fine. he moved the timing back down & plugged the EST
back in & the same problem came back.
Logically, I am thinking "what tells the ECM to pull timing...........
Knock Sensor (Duh), maybe MAT, or MAP & of course the Prom.
Any help would be appreciated.
PS. Sorry about the HTML, I am @ work, & this is the only connection I
have.
--- Bob Wooten
--- r71chevy at earthlink.net
--- www.r71camaro.homestead.com
------=_NextPart_000_0000_01C1B65F.8EF8C160
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4807.2300" name=3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN class=3D910502904-16022002><FONT face=3DArial color=3D#0000ff =
size=3D2>No=20
idea's here guys?</FONT></SPAN></DIV>
<DIV><SPAN class=3D910502904-16022002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D910502904-16022002><FONT face=3DArial color=3D#0000ff =
size=3D2>TIA</FONT></SPAN></DIV>
<DIV><SPAN class=3D910502904-16022002><FONT face=3DArial color=3D#0000ff =
size=3D2>BW</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> =
owner-diy_efi at diy-efi.org=20
[mailto:owner-diy_efi at diy-efi.org]<B>On Behalf Of </B>Bob=20
Wooten<BR><B>Sent:</B> Friday, February 15, 2002 11:01 =
AM<BR><B>To:</B>=20
diy_efi at diy-efi.org<BR><B>Subject:</B> T/S EECIV =
setup<BR><BR></FONT></DIV>
<P>
<DIV></DIV>
<DIV>A buddy of mine & I have been working on a 87 Ford F150 w/a =
302=20
(Fed not California) w/the EEC IV EFI setup on it. the =
problem is=20
that the ECM is pulling all the timing out of it when there is a load =
on the=20
engine. It does not appear to do it when you don't have a load & =
just rev=20
the motor up. the first thought was the Knock sensor, but he has =
bypassed it with a resistor (don't know what value or anything, =
someone @ Ford=20
told him how to do it) & it did the same thing. </DIV>
<DIV> </DIV>
<DIV>Items changed:</DIV>
<DIV>Ign Module (with Napa Brand)</DIV>
<DIV>CTS</DIV>
<DIV>MAT</DIV>
<DIV>EGR (it was leaking, & needed it)</DIV>
<DIV>ECM</DIV>
<DIV>MAP</DIV>
<DIV> </DIV>
<DIV>Items checked:<BR>KS (bypassed)</DIV>
<DIV>Fuel pressure (solid)</DIV>
<DIV>O2 (responds predictably)</DIV>
<DIV>Ign Module (on a checker, as well as replaced with new)</DIV>
<DIV> </DIV>
<DIV>Specifically what he is doing is putting it onto his dyno (IM240 =
chassis=20
dyno), & starts to do the normal smog check under power & he =
noticed=20
that it pulls all 22 Deg of timing out until it is down to the 10* =
Base=20
setting. if he puts it into Neutral & just revs the motor =
all=20
appears good. one test that I thought was the tell tale was that =
he=20
removed the EST (or whatever Ford calls it), bumped the timing up a =
BUNCH=20
& then put it back on the Dyno. He did a pull, & the ECM =
was not=20
able to pull the timing out & all appeared to work fine. the =
engine=20
still had plenty of power & it ran............ Well =
...............=20
fine. he moved the timing back down & plugged the EST back =
in &=20
the same problem came back. </DIV>
<DIV> </DIV>
<DIV>Logically, I am thinking "what tells the ECM to pull =
timing...........=20
Knock Sensor (Duh), maybe MAT, or MAP & of course the Prom. =
</DIV>
<DIV> </DIV>
<DIV>Any help would be appreciated.</DIV>
<DIV> </DIV>
<DIV>PS. Sorry about the HTML, I am @ work, & this is the only =
connection=20
I have.</DIV>
<DIV> </DIV>
<DIV>--- Bob Wooten</DIV>
<DIV>--- <A=20
=
href=3D"mailto:r71chevy at earthlink.net">r71chevy at earthlink.net</A></DIV>
<DIV>--- <A=20
=
href=3D"http://www.r71camaro.homestead.com">www.r71camaro.homestead.com</=
A></DIV>
<DIV> </DIV>
<DIV> </DIV>
<P></P></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0000_01C1B65F.8EF8C160--
----- End of forwarded message from owner-diy_efi at 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
More information about the Diy_efi
mailing list