Re: It's alive!

[rr <RRauscher@nni.com>]

mike mager wrote:

> BobR. replied about his '747 ECM going from ignition only to EFI:
>
> (You said 327, but did you ever say what the vehicle is?)
>

'67 Firebird, when you get a chance, check out the '747 ignition only writeup.

>
> >The strangest thing is the IAC opening on a pedal blip, then taking
> >it's time closing (~4secs). Causes the r's to hang.
>
> Well, that's the 'dashpot emulation', right?  I've always felt that it was
> quite exagerated.  All that I am able to suggest is, check the ECT (alright,
> I just always say that!), but really, check the TPS, and verify that the ECM
> knows the engine RPM - I mean, it oughta, but, I'd like to see it on the
> scanner.
>

What happens on a throttle opening, is the IAC retracts 60 steps. Called the
'throttle follower'. It then closes back down at a specified rate, low vss is
slooow. There are a couple of values I'll be trying to change this. Hopefully,
the engine won't then stall ;)

>
> Mike (still sounds like fun!)
>

BobR.



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