[Diy_efi] Re: (was: IAC counts) VE tuning issues

Mon Jan 3 04:14:37 GMT 2005

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Mike:
Most of the griping I hear about Accel injectors is that they randomly =
stop working, or leak fuel into the intake.  I can't remember any =
specifics, but searching a bit in the TPI and DIY-PROM sections at =
thirdgen.org will probably get you a few good complaints.

The enable settings for BLM learn at idle are different from non-idle =
learn so it may just not be updating.  If you reset the BLMs then you'll =
know it's updating when it changes from 128 (you'll have to pull the ECM =
fuse or disconnect the battery to clear the BLM info.)  I'd try that =
before I spent more time troubleshooting.

Charles:
I would STRONGLY recommend going to a heated O2 in your case.  Headers =
(especially longtubes) move the O2 farther from the exhaust port which =
makes it much more susceptible to cooling down at idle.  I'd be willing =
to bet this is what's causing your idle BLM creep.
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<DIV><FONT face=3DArial size=3D2>Mike:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Most of&nbsp;the griping&nbsp;I hear =
about Accel=20
injectors is that they randomly stop working, or leak fuel into the=20
intake.&nbsp; I can't remember any specifics, but searching a bit in the =
TPI and=20
DIY-PROM sections at thirdgen.org will probably get you a few good=20
complaints.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The enable settings for BLM learn at =
idle are=20
different from non-idle learn so it may just not be updating.&nbsp; If =
you reset=20
the BLMs then you'll know it's updating when it changes from 128 (you'll =
have to=20
pull the ECM fuse or disconnect the battery to clear the BLM =
info.)&nbsp; I'd=20
try that before I spent more time troubleshooting.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Charles:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I would STRONGLY recommend going to a =
heated O2 in=20
your case.&nbsp; Headers (especially longtubes) move the O2 farther from =
the=20
exhaust port which makes it much more susceptible to cooling down at =
idle.&nbsp;=20
I'd be willing to bet this is what's causing your idle BLM=20
creep.</FONT></DIV></BODY></HTML>

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