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Alfa 156 Dashboard Buzz

3K views 2 replies 3 participants last post by  rob3rto 
#1 ·
This is driving me insane!

My (March) 2003 righthand drive, Alfa 156JTD Sportwagon (150bhp), 20,000

miles, has an electrical sounding intermittent buzz coming from inside the

dash, generally behind and slightly to the right of the steering column when

you look forward from the drivers seat. This can also be heard occasionally

coming from the lefthand (passenger) side of the dash.

It only seems to happen when the car is cold and the outside air temp below

11 degrees centigrade. It sounds like a cross between short circuit and a

rattle, but because of it only happening when the car is cold and for the first

15 minutes of the journey, i am certain that it is electrical. Once the car is

warm, it disappears completely and does not happen again until the car is

fully cold. I'm not sure if it's related, but a slight buzz can also be heard from

the lefthand front door speaker when this is happening (stereo off). I have owned the

car from new. It is completely unmodified, with the standard Bose single CD

player. I have tried turning various equipment on and off, i.e. climate

control, stereo, lights, etc and nothing seems to work. Moving the steering

column in and out has a small effect, but only briefly. I have looked up under

the dash and cannot see or feel any obvious loose connections. I have

removed the steering column cover, and there is no evidence there either.

The noise varies in intensity, but tends to be worst on rough roads. Does

anyone have any ideas or similar experiences? My Alfa dealer (and other

dealers) haven't a clue!
 
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#2 ·
I have a 156 1998 model and I have had it for 6 months. Very early on i noticed a small noise from right of the steering wheel, this sound like a small cricket/ grasshopper. At first I thought I was going mad and was even convinced i had an insect inside. Mad!! As far as i can tell mine is to do with the internal heating system/ air con. Don't pay much notice of it now. Not sure if this relates to your problem, or maybe I am mad!! Let us know what the problem is if you find out.
 
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