Hmm.... I may be way off base here but I seem to recall from 35 years
ago that hams would squirt graphite powder into the interior of their
tires to eliminate noise produced by a mechanism that I no longer
recall. Maybe an urban myth. No doubt others can give better info.
FWIW de Jim Smith VE7FO
David Jordan wrote:
> Hi Folks,
> Found an interesting problem while listening to AM 630 all news
> station here in WDC.
> Getting loud clicking noise. Sounds very much like spark plug noise
> but when coasting at 30mph and placing the engine in neutral such that
> the engine RPM drops from 2500rpm to idle, the ticking noise remains
> at speed. However, as the vehicle slows down the noise also slows
> down. I can rev up the engine while it remains in neutral but the
> speed of the noise doesn't change. Is there some type of speed or
> other monitoring devices on the wheels of the 2001 Explorer that is
> sending RF signals to the on-board computer? This one is got me
> scratching my head.
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