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My 2000 has developed a whine which changes pitch with revs. The sound emits from the speakers but does not change volume with the radio. It’s not there all the time but now I’ve heard it I can’t unhear it! With the radio powered off the sound is gone.

Any ideas?

Cheers

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Standard fit radio or aftermarket? Probably an earthing problem though in either case.

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if your referencing a noise in the radio like the noise you got from an old car it could be the alternator starting to fail ?

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I was fearing that…. Darn!

Better stick my spare in the boot!

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Gilbertd wrote:

Standard fit radio or aftermarket? Probably an earthing problem though in either case.

After market now, where to start for an earth though…. There’s loads of earthing points!

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Make sure the casing of the radio is connected to a good earth and not relying on the one in the power plug (assuming it is using standard DIN connections). It shouldn't matter which one you use as long as it is a clean earth. Failing alternator is a possibility. I recently bought one of these https://www.veconline.co.uk/new-replacement-12-volt-lucas-type-alternator-regulator-a127im-vrf153a-138789?search=282504162073 for the original Marelli alternator, set point at 14.7 volts too.

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Thanks Richard

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Also is the aftermarket stereo wired via the door amplifiers or direct to the speakers ? Incorrect wiring to the amps can also cause whine.