still just me <wheeledBobNOSPAM@[EMAIL PROTECTED]
> wrote in
news:vf48v39k82jt6kgrs8h9kun1gpodkevj62@[EMAIL PROTECTED]
> On Tue, 1 Apr 2008 14:11:52 -0700 (PDT), codifus
><codifus@[EMAIL PROTECTED]
> wrote:
>
>>Fair enough. But is it all coils that need to be replaced or just the
>>defective 1 or 2?
>>
>>CD
>
> A good question. I only had to do one in my CA16. Easy to ID. Many
> Maxima owners replace all six because they often continue to fail once
> they start to go (see Maxima.org). But, I got away with one in my Max
> (Hard to find). There' ve been some massive failures such as the Audi
> problems - but that was a specific engineering issue where all coils
> would start to go at 40K.
Which was likely a bad manufacturing batch or a poorly designed coil.
> And Saab has a regrettable single unit with
> 4 coils built in - requiring replacement of all 4 at once or 3 in a
> V6.
>
> I think the root of the problem is putting moderately sensitive
> electronic devices on top of an engine - and in most cases, putting a
> cover on them to make sure they bake. I've yet to see one of these
> coils with even a simple heat sink.
COILS are not considered -electronic- devices(electrical,not
electronic),and are not "sensitive",even "moderately".
"electronics" would be the ECM and the semiconductor circuits that switch
the coil primary current.
Problems coils have are bad windings or bad encapsulation/insulation,or
improper currents applied to them.(an external problem,not of the coil
itself).
--
Jim Yanik
jyanik
at
kua.net
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