It could be the head unit, but the whine only comes through the front speakers (external amp supplied). I could try switching outputs to amp. New sparkplugs (NGK B6ET) didn't change things. I have noticed the whine changing in intensity at times, not related to engine speed. I have it in my mind that it is alternator, maybe a hinky diode, but that's just an unsupportable guess. I'll get David B. to fix it when he comes by tomorrow :) alistair
On 3-Apr-11, at 9:36 AM, neil n wrote: > Sure sounds like the vehicle electrics are the cause or at least > part of it and that head unit likely ok. But to be sure.... > > Do you have a car radio you can hook up? > > My thought: if something went slightly hinky on head unit (cap where > power goes in? Final stage amp?), and alt. etc. is supplying less > than best quality power, this might produce a sudden change. > > Neil. |
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