Hi all, recently upgraded from e39 to e60. I purchased it with a fault, and the guy (very straight and helpful) said the problem was with the heater plug relay, which I replaced this morning with a new unit. The fault is still there. The actual fault is- start the car (530D auto) . If you Rev it to 1500 and hold it when stationary, the engine will miss suddenly, then bounce back to normal - without the fault re-occurring until it has been switched off for a while. Similarly, if you drive off from cold, the same issue happens at 1500 revs. A quick splutter and back to normal, so not a gearbox issue! (?) He assured me the code reader his Indy gave him, suggested the heat plug relay. I put a new relay in this morning but fault still there. Would the fault still occur after replacement with a brand new one, without having the codes cleared? Any help would be great. Incidentally- relay is a bum to do, but managed it without removing inlet manifold. Cheers Smiffo.