first try searching for yoru symptoms int he search feature ont his site.
2. Search for OVP. It has been known to cause all sorts of issues.
3. Search for oxygen sensor as well it can't hurt.
Hope that helps in your search. you should easily be able to get the assitance you need here.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.