Hi everyone, just had new balance shafts fitted to my Audi pd140. While it was off I changed the timing belt, water pump, alternator and engine mounts. Got it running and, the egr valve motor started rattling...... so, removed and cleaned all the gunk out. Fitted everything back, same noise. Think the motor spline is stripped..?. Anyway I've unplugged the pin connection for powering it up. The egr flap is in the shut position. Took it for a drive, running perfectly. Management light has come on tho. No signal from egr. Am I ok doing this.??... cheers mick.