RJL_WRX05

After been stood all day in the freezing cold my car struggled to start after work tonight (MY05 WRX). Its the second time it has happended in the last 2 weeks, where I have to turn it over for a while until it eventually fires and chuggs a little bit. After that all is well.

All I can think of is that I left the interior light on a couple of weeks ago for about 24hrs (Doh!!) which may have weakended the battery??? I had a look under the bonnet tonight and I noticed a very faint "fan belt squeling noise" when the engine revs settled at idle and I could also hearing a bit of a buzzing noise coming from the alternator direction. Is this normal?

Maybe head off to the dealer and face the ordeal of locating the problem. Anyone any ideas??

Cheers

RJL_WRX05

Oh yeh the other thing was that the engine has started to tap a little bit for about a minute since its got really cold (only done it for the last 2-3 days). My old VR6 used to do this for about 5 -10 mins before the hydraulic tappetts pressured up. Is this normal on the boxer engine?