Re: [alfa] Re: NEW DATA! 164LS Challenge - taming of the shrew round two

[hagen_jason@xxxxxxxxxxx]

I also put in a brand new battery.  The voltage should be fine, but I can check it while chranking.  The ignition switch seems unlikely since I have no other electrical issues during starting, etc.  I suppose I can by-pass it or check all of the connectors though.

--
Jason Hagen
Chicago, IL
'73 Spider
'95 164Q


> At 1:42 PM +0000 6/15/04, alfa-digest wrote:
> >Here's what I haven't changed:
> >- - Ignition coil control packs
> >- - Ignition coils (but since car runs perfect when running, this 
> >seems remote possibility.
> >- - Actually swap out AFM (air flow meter)
> >- - Ignition switch (though this appears fine based on other tests)
> 
> I've heard of this problem before, and never thought about it too 
> hard.  But now my parents want a 164LS or Q, so I suppose I should 
> start thinking about things like coil-on-plug ignitions.  Yikes. 
> Without knowing what exactly the ignition control packs are 
> responsible for, I'd say they might be responsible.  I also have to 
> wonder if a coil or coils is/are drawing too much current in certain 
> situations.  Likewise, if there's too big a voltage drop across a 
> (failing) ignition switch, injectors, coils, coil control packs, 
> and/or the ECU might not be seeing enough voltage to work properly. 
> What tests have you done to conclude that the ignition switch is 
> working fine?  In the fusebox, is there a difference in voltage 
> between an always-on circuit and an ignition-switched circuit? 
> What's the battery voltage when the starter is cranking, within the 
> first second of cranking, and after ~5 seconds?  I've heard of this 
> (and inexplicable stalling) happening on enough 24V cars that I'm 
> tempted to think it might just be a stupid software glitch, but Karl 
> Chen's recent discovery of the toasted ignition switch connector 
> gives me hope that some of these glitches might have to do with bad 
> ignition switches and/or associated wiring.  (Karl, having resolved 
> the fried connector, have you confirmed that that was the problem, 
> and not just a symptom of all the current going through a failing 
> ignition switch?)
> 
> -Joe
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