hello everyone, I am the new kid on the block with the 1998 e300 td, great car except this idle problem that I had since I've got it. In the morning it starts easy but it shakes for about 30-50 seconds and it smokes a little bit (white smoke). It is fine after that until it warms up all the way to the normal temperature. After that if I put it in Park or Neutral it starts shaking again. Now the interesting part is that the shaking stops if I turn on the head-lights or the A/C. I have changed the filters, I ran two cans of Diesel Purge and I even replaced the lowest clear plastic fuel line with O-rings and everything because I saw air bubbles running through it under acceleration. Still the same. I took it to the mechanic, he hooked it up to the diagnostic machine and there is no codes ,he is suspecting that the EGR valve may be stuck or the timming. I have search the forum regarding this but no luck. If anyone can help me with this I would appreciate it. I am down in Atlanta ,GA and my name is Joe. Tanx again.