> Summer wrote:
> > Taken it to BMW dealer twice and of course it won’t act up
> for them.
> > Doesn’t start sometimes and have to wait 20 minutes or less
> before I
> > can try it again. All the lights come on but the engine
> won’t turn
> > over.
> > Anybody ever heard of this or know what it could be? One
> thing it is
> > not is key chip-or so I’m told.
> Right. I believe that the symptom for the EWS (key chip) is
> the engine
> turns over but won't catch. Your problem sounds more like a
> solenoid of physical keyswitch problem. Does it make any
> clicking noise
> at all when you move the key from position 2 (run position) to
> 3 (momentary start)?
> -Fred W
It makes no clicking noise but all the electrical stuff still works. I
know this sounds crazy, however it happens most often when the weather
is hot and muggy.
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Well, I need to make a correction. I broke out the wiring diagrams and
on the starting circuit page there it is, plain as day: The EWIS2
(Electronic Immobilizer Control) module works by interrupting the
circuit from the ignition switch to the starter solenoid. So, it would
be the most likely reason you are getting the symptom that you are.
One input to the EWIS2 module is the automatic transmission range switch
on cars fitted with an automatic. If yours is an auto I would try
jumpering out that switch before I did anything else. If that does not
resolve it, you could see what happens when you jumper from pion 1 to 3
on the EWIS2 module (bypassing it).
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