Help....Continuous shrill noise after battery recharge
Re: my 1992 RR Silver Spirit II, purchased this August.
I have the car booked into a RR specialist on Monday morning for another problem but I've asked them to look into what I presume is an electrical problem...? But when I described the issue to them over the phone, I they said they'd never heard of anything like this, so I'm worried they won't be able to get to the bottom of it. Maybe some of you may know what this noise is?
Before we come to it, let us have "the prologue", as Frankie Howerd used to say in Up Pompeii!
I would use the car, and all was fine, unless I put on the radio. And there was a strange whirring sound, (only with the engine on, radio was fine in ignition only) which I think came from the speakers(?) or specifically the o/s rear door speaker as one day there was a loud 'clap' sound from it and the radio ceased to function. (But was OK the next day!) Now the really odd thing with the whirring sound, was it increased/got louder when you accelerated, but dropped off completely when you took your foot off of the accelerator. (But only had this strange noise when the radio was on). I was keen to get this resolved as I sometimes like a bit of music when I drive. Therefore, I was going to ask the garage their opinion on this. However, things have moved on from here.... Not for the better.
Not knowing the state of the Varta battery, I took it out and put it on a CTEK battery charger and conditioner. All seemed fine, it charged up and I put it back in the car. Now, I'm not sure if this was where it went wrong, but through not concentrating I accidentally put the negative on before the positive, which it didn't like (this is why I should keep away from car maintenance and just clean them). Anyhow, I then put it on properly. But since then, I have a continuous shrill noise coming from somewhere behind the dashboard. I put the key in and it starts. I shut the drivers door, and it goes off. The noise will then come on if I put the ignition on and is indeed continuous with the engine running too. AND interestingly, the funny whirring sound (when I use the accelerator) I mentioned above, which I thought was the radio, is also present!
I've tried taking the radio out completely, thinking it may have something to do with it, but that hasn't made a difference.
So my attempt to help the car by charging up the battery has caused a right old mess. I'm a bit worried because even the garage seemed unsure of what the cause of all this is.
I did do a short video of the sound, but I don't think I can upload it on here, even as a zip file.
Any thoughts, suggestions or ideas what this problem is and how to rectify it, would be very much appreciated.