I've read somewhere that the Siemens relays in Mopars
have had trouble,and that they are a different brand
now,but they didn't elaborate.
Yes,I have heard relays buzz before. It is a very
common problem in residential air conditioners and
furnaces. I have actually connected speaker wires to
one and made it play music. They will operate like a
transducer (speaker,microphone) since they have a coil
and driven "element". They can buzz when they loosen
up a little. Not really a sign of imminent failure,but
it's an annoyance!
I'm sure the relay is your only bad part.
Steve P.
--- jon@dakota-truck.net wrote:
>
>
> Has anyone ever heard of a relay buzzing? Walked
> out of the house
> yesterday morning and there was a buzzing sound
> coming from under the
> hood of my Cherokee. The electric fan relay in the
> PDC was buzzing
> exactly like a piezo speaker! Pulled it out of the
> socket, and it
> stopped; every time I stuck it back in it would
> start buzzing again,
> would also do it if I disconnected and reconnected
> the battery. I
> pulled it out and had it sitting on my desk all day
> to remind me to do
> something about it, and went out to play with it a
> bit more at the end
> of the day, and its no longer buzzing.
>
> I don't know if its bad and the buzzing is the
> fluttering of the
> switch or if its some sort of smart relay trying to
> tell me that the
> electric fan is being naughty. Its a greenish blue
> color as opposed
> to the other relays which are black. Its labeled as
> a Siemens but has
> a Mopar-ish part nuber on it (starts with a 4, is
> about the right
> length and ends with AA) Sorry, I don't have the
> part number in front
> of me here right now. I did look it up on Google
> with no results.
>
> Anyway, my initial reaction was to just replace
> the relay but I
> didn't know if there might be something special
> about this one and its
> trying to alert me to something with the buzzing, or
> if the buzz is
> just a coincidence or symptom of the relay itself
> failing.
> Unfortunately, I neglected to try it in a different
> socket at the
> time, although I did try one of the other relays in
> the fan socket and
> it did not buzz. I forgot to try the buzzing relay
> in a different
> socket at the time, and of course now its not
> buzzing anymore so I'll
> have to wait until it does it again if I want to
> test that I guess.
>
> Anyhoo, I just thought that was sort've weird,
> and figured I'd
> check to see if anyone had any experience with a
> buzzing relay. :-)
>
> --
> -Jon-
>
> .- Jon Steiger -- jon@dakota-truck.net or
> jon@jonsteiger.com -.
> | '96 Kolb Firefly, '96 Suzuki Intruder,
> Miscellaneous Mopars |
> `--------------------------------
> http://www.jonsteiger.com --'
>
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