High-pitched electircal noise

[Rob]

Fitted ph1 sport seats to the car yesterday, everything fine, driven it a few times. Then...

Get in the car to drive back from a mates and get a high pitched noise, which gets higher/louder as i get higher in the rev range, same when in neutral.

First thoughts are bad earth?? Too many wires to close to something??

Oh btw, i have a sub and amp in the boot, and some 6x9's on the rear shelf

 

[Jonff]

It's not a whining type of noise is it?

 

[Rob]

Indeed it is! Sounds sorta like an sc whine!

 

[franx]

bad earth on the stereo set ?

 

[Rob]

I don't see why it would be? The stereo has been in for around 6 months, always been fine. The only changes i have made recently is to unplugg the sub from the amp, and unplugg the 6x9 shelf (just spade connectors) to put the new seats in and then plug them back in.

 

[Jonff]

Mine does the same thing, is it more pronounced at 3krpm? Apparently it's something to do with one of the Aux pulleys. Mine's done it since I bought the car (8months ago) and it hasn't developed in to anything more serious. Famous last words. lol

 

[Rob]

Mines only a 1.2, and if i turn the stereo off it makes no noise, but if i just turn the volume down or pause the track it still makes it. Must be something to do with audio, but I'm just stumped as to what?

 

[franx]

might be worth going over/checking those connections.

 

[Jonff]

Mines only a 1.2, and if i turn the stereo off it makes no noise, but if i just turn the volume down or pause the track it still makes it. Must be something to do with audio, but I'm just stumped as to what?

Ah right! That's a strange one :S

You've not been playing shite music through it have you? lol:rasp:

 

[Rob]

Hahaha, no shite music here sir. I did have a quick check but its dark. I've gotta drive all the way to camden now with an annoying noise in my ear (the missus) and this bad connection!

 

[TheEvilGiraffe]

friends car used to do this .. was a radio / speaker issue. Will ask him what he did to resolve it.

Have a feeling he sold the car in the end haha !

 

[Darren85]

Does the noise come from the sub? speakers? 6x9's? or all of them?

 

[Rob]

I can't tell exactly where its coming from but i guess i'll go around unplugging everything one by one til it stops.

 

[Monaco Sean]

If you have your AUX/Power/Renote lead all going down the same side of the car then that can cause it. Happend to me.

Re routed the Aux down the other side of the car and hey presto noise stopped.

 

[Rob]

Thing is I have not moved these leads in years, just added some wires for 6x9's which is bridged off the rear speakers, so why would it start all of a sudden?

 

[MT AUDIO]

Thing is I have not moved these leads in years, just added some wires for 6x9's which is bridged off the rear speakers, so why would it start all of a sudden?

i hope the rear speakers arent connected up!

 

[Rob]

Nein, any idea MT? I've just got the 6x9's running instead of the rear speakers... these were wired in for about 3 weeks before with no problems, then i took the seats out and put in sport seats, this meant unplugging the shelf and my sub but that was all?

 

[MT AUDIO]

need to know whether its through all or just one of the sets of speakers,or even just one speaker

 

[Rob]

Ok i'll check it out tmrw. Cheers.

 

[Rob]

Fixed this today, turned out to be me not plugging the 6x9's back in very well on the bulb connectors.

This resulted in some interference from having open metal connections so close to eachother (less than 1mm apart) took apart and plugged back in properly, solved.