Here is the rest of what I wrote last night
Often just unplugging and replugging the connector can fix this
problem temporarily. To prevent this from happening you can do three
things:
Move connectors to areas of low vibration / heat
strap connectors so the parts cannot move in relation to each other
Use dielectric grease to keep the oxygen out.
On modern cars with water tight connectors the dielectric grease is
applied before the connector is assembled otherwise there would be no
way to get in there afterward. A good connector will scrape the
dielectric grease and the tin oxide out of the way to ensure proper
tin to tin contact. (Note to anyone working on a modern car, do not
use dielectric grease on O2 sensor connections, it will poison the O2
sensor.)
the concern here is not so much moisture as it is oxygen. A side
benefit of dielectric grease is it will help moisture out also.
Double win!
I hope this answers your question.
Rick
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Healeys@autox.team.net
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