So I bought a 87 325e about a week in great condition except engine sounded a little rough and idled rough so decided to do a tune up put new spark plugs distributor cap fuel filter oil service and adjusted my valves and cleaned my idle control valve the car idles bad maybe even worst than before but the weird part is that when the AC compressor is on the idle smoothes out a lot oh and my cluster the tach gauge or temp gauge don't work but besides that everything is good lol any suggestions on my problems? Thanks.