Idle too high. How do I adjust

[Bruce]

Dunno anyone that does boat chips off hand.
The proper answer is burning your own chips anyway.

Might try just leaving the IAC unplugged.
Jump A-B at the ALDL, key on for 30 secs., unplug IAC, and then key off,
start engine, set min idle speed adj..  Would defeat the IAC, not the best
answer but an answer
Bruce


----- Original Message -----
From: "ZZZ Temp-Gold" <Temp-Gold at HighlandsIns.com>
To: <gmecm at diy-efi.org>
Sent: Tuesday, September 04, 2001 3:21 PM
Subject: Idle too high. How do I adjust


> I have repowered my boat with a '90 rv tbi 7.4. It has a 747 ecu and works
> nicely, other than the idle. The boat likes a 500+/- rpm idle and it's
> currently idling at 800. What can be done to adjust it? (Ive tried backing
> off the butterfly, and this seems to help, until I restart the motor and
it
> goes back up to 800 again.) If reprogramming is the only solution, Id sure
> buy an 'adjusted' chip.
>
> Also, it pulls up to 4200 rpm. Is this the upper limit of the motor? It
> seems reasonable, just curious.
>
> Thanks,
>
> Greg Gold
> --------------------------------------------------------------------------
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