3850Re: Auxiliary air valve and idle speed
- Sep 7, 2005Hi,
It could be a temperature sensor that is giving you this trouble
their input signal is vital to have the electronic engine controller
give the right signals to this valve, so I suggest check all
temperature sensors make sure they are functioning normal.
--- In bmwe28@..., "Arny K." <arny@p...> wrote:
> Hello all,
> I'm confused by the functioning of the auxiliary air valve on my
528i. AFAIK, my previous valve did not function at all, so we have
replaced it with another. However, it still doesn't work as I'd
expect - from what I know, both carburetted engines with choke and
motronic controlled engines work with higher idle speed when cold,
but this is not the case with my engine. It works on the same or
more often lower RPM when cold.
> I've checked how much the valve is open, and found out that it is
barely cracked open. The environmental temperature is still high
though, but I'd still expect it to open more when the engine is cold.
> Could someone give me some advice about how much should the valve
be open, and should the idle be higher when cold and if so, by how
> [Non-text portions of this message have been removed]
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