Hi all,

This is my first post here, but def not my first Mercedes. Quick background, I have a 66 W111, 72 W108 4.5, 99 w202 kompressor, 02 ML500, 89 w201 2.6 and my current problem child, a 87 w201 2.5 turbo diesel. If you guys follow Mercedes Benz on facebook, this is one of my Mercedes https://www.facebook.com/photo.php?fbid=845375622157135&set=a.177452518949452.45847.112336898794348&type=1&theater I purchased the diesel from an individual who had no idea on cars nor Mercedes, the car was very poorly taken care of and has its fair share of rust at the all so common jack points. I scored a decent deal off it, and am in attempts to bring it back to life.

So, I have a couple of issues...first off, while running, when you give the car gas, the entire car shakes as it drops back to idle. I am unsure if its a fuel delivery issue or motor mounts. I have put a diesel conditioner [no idea how long the car sat as the person wasn't very fluent in English that I purchased it from]. The only thing I have done so far is replaced the clear inline filter to the diesel pump. I am waiting [from pelican parts ] for my replacement parts in which it includes the diesel fuel filter along with some fuel lines. Even after replacing the inline clear filter, it seems to have alleviated it slightly, but still have the hard shutter going back to idle and a very hard shut off. I will also mention that the oil is way over filled [waiting to change the oil for when my parts come in with the new filter].

My second issue is that the tach in the cluster didnt work. I had a spare laying around but it came from a 2.6, the red line is obviously different, but I was thinking that it would still work? When installed in the car, it jumps immediately to 7k [its max] and when you hit the gas, it drops. Bad ground? Original and replacement gauges bad? Also, the oil pressure guage reads at max at idle and drops when you rev the engine, again, bad ground [or possibly related to the oil being overfilled]? The oil pressure, gas gauge, both drop with revs, however this gauge is original to the car. I honestly cannot say if i can recall if it did this before the tach change.
Any insight would be most appreciated, I have tired my search and havent found much related to my current issues.