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Originally Posted by Cheech
At last another one like mine !
As mines not coming from the engine bay ( ay least it dosen't seem to be)
I'm trying to get info on moving parts behind the dash.
Anyone got any ideas..... as its linked to the RPM's I'm guessing that
it could be a noisy tacho sender. (But I'm only guessing as I freely admit that the limit of my expertise is changing the oil & oil Filter).
Mr. Territory if you read this, perhaps you may have some suggestions as to any moving bits behind the dash ?
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I think it may be something to do with harmonics, sound traveling through something, like an air con pipe, to a part that reverberates.