156 2.4JTD Electrical Fault
I've had my Alfa 156 2.4JTD for nearly 2 years now (2002 reg). Since about 6 months after buying it I've had a recurring electrical fault whereby if I leave the car in the drive for a few days the battery is flat whan I come to it. Since I drive an hour each way to work I am presuming it is charging more than it is draining normally but when I leave it standing for a few days it drains the battery. I've checked the terminal connections on the battery and they're fine. I have had the RAC out in the past and they checked that the Alternator is charging properley and they said it was.
The symptoms when I try to start it are that the speedo bounces up and down and the dash lights flicker. Once I've taken the key out theres a whole wurring thing going on behind the dash (Aircon vents?).
Also, at Traffic lights while idling I notice that the headlights dim a bit.
Any help/ideas would be appreciated!!! Didn't want to get an Auto Electrician out without having any idea as it feels like it will just be a blank cheque for him!