Still have some problems - ahy ideas?

[Roger Heflin]

On Wed, 8 Dec 1999, Mike Rolica wrote:

> Well , is iac all the way open?  Sounds like you may be running a little
> rich causing iac to open up to try and lean it out.. also what rpm is the
> ecm aiming for at that temp?  Ide be looking at the cs and cold idle
> parameters.  Ie maybe it is trying to run at 1200rpm, adding too much fuel
> for the iac position causing it to sound fat and idle lower, so it opens iac
> all the way and adds more fuel..
> I may be way off but let me know.  You would hear definite tick tick tack in
> ryhthm to the valve train and would cause vacume to go through roof and
> fluctuate a bit.
> Mike Rolica
> Meridian Magnesium Products
> Strathroy, Ont 
> Ext. 260
> 

What happens is that the IAC opens all the way (160) up to try too
keep the idle up, and then the engine dies (rpm too low).   I have
things set leaner (things ran fine after I leaned things out but the
temp was in the 80's then), so it would seem more likely I am not
enriched enough.   It does seem to have a relationship to engine
ambiant temperatur at starting.   Restarting the engine on a semi warm
engine does not experience the same issues.

				Roger