Actually...
I went to AZ and bought a new IAC, and the instructions specifically
said to drive @ 40mph for 2 minutes... I had read that before re:
re-learning things, but figured it was the usual "takes the computer
time to re-learn" mumbo jumbo... but if it was important enough to
include a full page of instructions w/ the part it must be real.
So on the way home I drove @ 40mph for 2 minutes... and since then I
have had ZERO problems idling... I didn't even need to open the hood...
I'm glad it's fixed, but it's a bit depressing that the computer's
factory settings are so screwy that the engine, even after driving
approx. 100-150mi, was still idling bad...
I'm keeping the part for a few weeks just in case... it has been
unseasonably warm lately, so maybe the first 35* day it will stick again...
As for the oil... what is the proper AC Delco part number for the
pressure sensor? 1823 or 1832? 1832 is more expensive so that must be
it! :)
Thanks,
-Ethan
Biff Byrum wrote:
> I had that on my first '89, and I was 150 miles from home in a horrible
> storm. After getting back just fine I got a used sending unit from the
> local wrecker and the funny readings went away. That
> orifice is so small that oil cakes there and afftects
> the readings. My current GenII has somewhat the same funny readings but not
> that low. As for your
> other problem, you say after up to 90 seconds it
> goes away. Thats about when you should get to
> 100 F. Which is when you go into closed loop. As
> to the IAC, I don't know if you have to change it. I
> just cleaned mine up according to a Dakota web site. It was horrible at
> 275,000 mi. Just some carb
> cleaner, clean paper towels, and q-tips for the seat
> inside the body. But be careful not to move the
> pintle any more than necessary, and very slowly.
> It did seem to smooth out my idle somewhat.
> I would more likely look at TPS on that problem.
>
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