Hello all,
I am having trouble with my 1995 C220. When I try to maintain a steady RPM the engine will surge. For example, if I push the accelerator, while in park, rev the engine to 2,000 rpm then try to maintain this rpm, the engine will surge up and down. I was able to find a cheap MAF sensor, replaced it, and the problem still exists. I now think it may be the fuel pressure regulator, but I really don't know. Any ideas????

Thanks in advance, Clint