306oc - Peugeot 306 Owners Club & Forum

Got a loud buzzing thu speakers but only when the engines running. It did it also in the estate but I thought it was a bad stereo earth. Running tho a give amp. It also gets louder with the engine revs.

Neaust told me it was noise in the speaker circuit from the injectors. Makes sense with it getting louder with engine revs. So yeh. Probably a bad earth?

On an XUD tho there shouldn't be any noise from injectors

Deffo a bad earth mate where you earthed the amp to?

It can happen to any car mate, just a bad earth, try relocating the amp earth, can also b phono cable picking up a signal, I kno it sounds a lil odd but had it in an old car, moved the phonos and the buzzing stopped, hope u find the problem mate

Bad earth or shit RCA cable.

It's earthen the the isofix support bar same place as battery. Turned gain down and it stopped then i got a bringing noise and smoke from the amp but its still working ok :/ its a vibe a3

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Gona try get another amp to try to see if it is the amp or not

It's picking up the poorly rectified DC output from the alternator...



I'm fairly sure alternators work on full wave rectification, so this is what you're hearing.

You need a ground loop isolator.

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