Hey guys need some advice on a couple of things. Ive got a 2001 Auto Golf. First of all my car needs a new upstream 02 sensor, is this something I would be able to do myself ( I have done simple repairs, oil changes etc). Also needs new cv boots, discs and timing belt. A mechanic has also informed me that my car is taking too long to warm up and needs a new thermostat, by this does he just mean the temp sender? Also what should I be looking at while checking my timing belt, it looks pretty good to me, no cracks etc, but my car is at 95,000kms and it hasnt been done. Thanks for your help in advance.