Alfa Romeo Forum banner

1 - 12 of 12 Posts

·
Registered
Joined
·
478 Posts
Discussion Starter #1
Greetings. I've tried to find an earlier thread on this subject but without success so would be grateful for help. I've had my 2nd hand G for about five weeks and all is well (can you feel a "but" coming?!) BUT in the last few days a noise has started happening in the sound system when I brake.

It sounds like electronic interference and comes out of the lower passenger side door speaker. It happens with all sources -- CD, radio and iphone. It doesn't happen if I brake very carefully but any kind of meaningful push on the peddle brings the rasping electronic noise until I take my foot off the brake. I've tried pressing and releasing the brake and the noise comes and goes.

Grateful for any suggestions. Thanks and nest regards,

Joe
 

·
Registered
Joined
·
478 Posts
Discussion Starter #3
did you try with the radio turned off?
Good question. So I went to try it and something strange happened. Started with radio on and noise still coming every time I brake. Switched radio off and the first couple of times I brake, the noise is still there. Then the noise disappears. Switch radio back on and noise is gone. Drive around for 10 minutes, braking at regular intervals and no noise. What was that about?

Is it like a computer where switching off and on fixes 95% of problems? Thanks for the suggestion!
 

·
Registered
Joined
·
478 Posts
Discussion Starter #4
I thought it was too good to be true. The noise is back AND is also present when the audio system is turned OFF! Does that mean the noise isn't coming from the speaker at all?

Earlier today, it happened when I wasn't braking either, although it consistently does it when the brake is applied. Any ideas? I can feel a visit to "THE DEALER" coming on. That should be a laugh.
 

·
Registered
Joined
·
478 Posts
Discussion Starter #6
it could be the mounting frame for the spearker that's vibrating, or the doorcard, or the speaker grille...

the real question is though, why are the brakes causing vibration? definitely something to be looked at.
I'm not too concerned because I don't think this noise is caused by vibration. I can feel no vibration through the pedal and the car stays straight when I brake hard.

It sounds like an electrical interference noise to me but it definitely happens with the audio system switched off. All the time now when I brake and also when I take a sweeping right turn (am I imagining this?).
 

·
Registered
Joined
·
478 Posts
Discussion Starter #7
Hi guys. I just thought I'd post on this subject again in the hope that someone can help. To be honest I can't face a trip to the dealer.

This problem definitely falls into the "intermittent" category because it can disappear for weeks at a time.

Something that I didn't notice before is that, with the brake peddle depressed, the rasping noise comes from the passenger side around the speaker but ALSO the volume from the door speaker falls until I take my foot off the brake.

As I said before, with the audio system switched off, the electronic (?) rasping noise still happens when I brake and on right turns. Never left. Any ideas, please? Best regards.
 

·
Registered
Joined
·
687 Posts
Just a very wild guess but a bare wire touching something else perhaps? Braking and right turn g forces cause it to move one way wheres Left turns don't cause the issue because the wire moves in a different direction maybe.
 

·
Registered
Joined
·
478 Posts
Discussion Starter #9
Just a very wild guess but a bare wire touching something else perhaps? Braking and right turn g forces cause it to move one way wheres Left turns don't cause the issue because the wire moves in a different direction maybe.
Thanks, all guesses, wild or otherwise, gratefully accepted. Any idea where said wire might be found?
 

·
Registered
Joined
·
687 Posts
I'm afraid not. It might be cheaper in the end to get an Alfa dealer or specialist to run diagnostics instead of chasing down the fault yourself.

I had a Fiat Bravo and it developed a fault where it would shut the engine down 30 seconds after starting, Towed it to a local garage where he hooked it up to a OBD reader. It was flooded with faults indicating almost evey major engine component had issues. He said he didn't know where to start and wouldn't touch it. To his credit he didn't charge me a penny.
Took it to fiat where their dedicated software immediately highlighted an earth short and where it was located. They swapped out that bit of wiring and it was right as rain.
 

·
Registered
Joined
·
478 Posts
Discussion Starter #11
Thanks. Since I also have an indicator that has stopped cancelling, perhaps I'll risk a visit to the dealer. I'll let you know what happens. The car is on an extended warranty now so have no idea if any of this will be covered. Somehow, I doubt it.
 
1 - 12 of 12 Posts
Top