10-12-2012, 10:48 PM
I can't see how your aux belt would cause a dodgy idle? I have noticed hdis (or the two I've had anyway) really don't like cold starts/dampness/cold weather. I dunno whether the cold map is just shite but mine doesn't really idle or drive well until its warmed up. Problem is it never gets a chance to warm up atm only doing 15 miles at a time. Jumps on part throttle too. However it drives fine if it can get to 75c!