I recently had issues with my 98 jetta tdi going into limp mode ALL the time. Then suddenly the timing belt slipped. Two questions to senior members: 1) Could a faulty timing belt tensioner lead to limp mode problems, and 2) How likely is it that with only one cracked lifter, I contained engine damage to the area of the cylinder head by shutting the motor down immediately? There doesn't seem to be any more with any visible damage, but one was completely shattered. How screwed am I??