"Rocco_Boy" <Rocco@nospam.com> wrote in message
> For the past year my my wife's 740 has had starting problems on
> occasion. Always at the worst time and always after a short trip.
> Turning the key lights the indicator lights but it won't turn over.
> Eventually it will start. Maybe after a few minutes. Maybe after an
> hour -- you try again and it cranks and starts just fine. This never
> happens in the morning or after work. It seems to occur when making a
> stop after running for a while e.g. when coming out of the store. The
> problem of course can't be reproduced for the mechanics so they are
> having a rough time finding the problem. Last thing they tried was
> replacing the park - neutral position switch. Anybody have any ideas.
> Thanks in advance.
Those aren't exactly the classic symptoms, but ignition switch trouble is
common in the 740s at this age. I replaced mine - in an '85 - four years
ago because the warning lights wouldn't come on (and the engine wouldn't
fire) for increasing periods of time on cold mornings. The part is under
$100 US from IPD www.ipdusa.com
and is a fairly easy DIY job.
Starter problems are also not unheard of. The classic test is to whack the
starter judiciously with a hammer and try again. Some people use that method
to struggle along with a failing starter for months at a time. The starter
is easy to remove and reinstall, and if you DIY cleaning and relubing can
work wonders. Aftermarket starters have earned a bad reputation and OEM
starters are pricey.