So, had the unenjoyable experience of hearing horrible noises followed by a bang under the bonnet of my EP3 Type-R yesterday...
Recently I've heard the occasional whining sound from the engine but couldn't put a finger on what it was, quick check from a mechanic couldn't see anything either (noise wasn't occurring at the time he checked), but I'd been planning on getting it into a garage for a more thorough check this week. Driving yesterday the whine was present, before suddenly getting a lot more rough sounding as I pulled away from some lights, then howling followed by a loud bang. Bang aside the engine carried on running and car felt fine - so coasted to the layby a hundred metres up the road. Looking under the bonnet I see that the idler pulley has sheered off the mount, presumably due to it's bearings siezing, and the aux belt is sitting on the engine cover on the floor. Should have put it into the garage for a closer check sooner
Looking into it I need to buy a replacement idler pulley and the bracket it sits on (as that looks completely threaded), get that fitted and get a belt fitted again - I guess I'd be stupid to not get a new one even. The question I've got is, can this be fitted without taking the engine out? Looks like it would be really tight to reach and certainly beyond my abilities - but don't know whether a mechanic would have any tricks to doing this in the available space. How much is repair likely to cost me here, and if it is an engine out job is there anything else I should consider getting done at the same time to make the most of easier access?