Michael forwarded a note concerning noise on 40M, in a Ford Deisel
A comment was made that, even if the source under the hood was located
a probe- the ID of the source would not be known.
If I make make an observation- the Pseudo-shop manuals for almost all
vehicles made in the last 30 or so years are available at most auto
stores. I, personally, have not had a vehicle in that many years for
I did not have such a manual. They cost less than $20 for most cars.
and Chilton are two well known brands.
If that is not convenient, most libraries have sections containing
automotive data that is even more detailed than these manuals. I have
occasion to check details of wiring harnesses in my Nissan Pickup, and
library was a great source.
A mystery like this is usually solveable- the use of the probe, and
reference to a manual for ID of the source, is my recommendation. Even
deisels have electrical circuits that can be less than well designed,
an interference standpoint.
When you find the source- Bitch to Ford and let us know, as well.
Bill Aycock --- Persimmon Hill
Woodville, Alabama, US 35776
(in the N.E. corner of the State)
W4BSG -- Grid EM64vr
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