The flex discs are the prop shaft rubber donuts, get the car in the air and inspect for cracking. My rear one looked okay, the front one shot. If they fail while driving they can make a right mess of things. MOT didn't pick up on it, but it failed a couple of months later @ 80mph on an autoroute. (a couple of yrs ago)
The wiring looms that are affected are
1) A/C fans
2) Lower engine harness (starter, oil pressure, oil level)
Easy enough to do yourself
Sileck did these two for me
3) Upper engine harness (Injectors, coils, temp sensors, cam position sensor, variable cam timing, variable intake valve)
4) Throttle body.
Check around the front of the engine, take the black cover off, if these show signs of deterioration the rest will be fubared. (try not to disturb them) Mine had good wires to the coils, looked like in the past someone had spliced new wires into the rotten loom.
The Air Mass meter (by the air box) is not affected, I checked all the other looms in the engine bay, they were all okay.
My car wasn't misbehaving, I regarded it as preventative maintenance. The car's a keeper and used for long distances and holidays so I like it to be as good as I can get it.
If you haven't a record of fluid changes do all these, gearbox included. The other thing that seems to require replacement at this age is the fan clutch. If the car overheats in traffic it's your 1st suspect.
Enjoy, tinkering is 1/2 the fun and helps you bond with it.
