Re: 156 questions
Alarm wise when I unlock the car the indicators flash twice and the car beeps 10 times. When I lock it the indicators come on for a few seconds solid then go out. I believe the alarm is armed and disarmed along with use of the remote central locking. How do you lock and unlock your car? Do you have remote central locking or do it manually?
Idle wise I have the same issue, it sits just below the 1000 marker and wavers slightly giving it a rough edge. After reading on here I was told it could be the MAF sensor, but that this would affect performance, and seeing as how my car performed spot and a couple of impromptu performance related tests later showed it was how it should be, I ruled that out.
I took it to an Alfa Specialist who went over the car and said that alot of the earlier ones just had a rougher idle than the newer ones and that nothing was amiss, all cylinders were firing etc.
So unless you think your performance is down, then I wouldn't worry. If however performance appears down then as Jason said it will probably be an issue with the MAF sensor. I think these cost around the £150 marker or so.
Take it steady and good luck,