I'll worm a new harness into this thing soon. It's on my list of things. if I dont, this is gonna get a new engine. Diesel. Have not decided yet though...

Where is the MAF so I can clean the bugger.

The MAF is in the black intake tube just downstream of the air filter. You will need to disturb the wiring harness -see how that works?-to remove it from the car.

Oh fun, thats what that is.... i'll clean it, report back,

on a side note, is the sedan/coupe/Wagon harness the same one? I have one from a sedan and after a little reading there's some that say they are different

I b'lieve there is an early harness for engines with a ignition distributor and a later harness for engines without a distributor.

All of the E320s are distributorless, the 300E 2.8 and 300CE had the distributor M104 IIRC.

However, there was a wire harness change mid-year in '95, you can tell by VIN, I believe that the above ^^ sellers have the harness listed by VIN.

If you have the later-style belt tensioner (not the M103-style), you might also have the later harness. Best to check.

No Idea. I know I need a harness now... eesh.. touch one little thing and it all goes plotz. on a side note, I think I figured out some of the problem. On the front of the engine there's a round thing I assume has to do with timing, there was one of 2 wires that was almost completely sheared off, also the MAF is clean.

anyone care to tell me if I need an early or late harness WDBEA92E6RF288812

Looks like that VIN takes the early version (up to F302891), p/n 124-440-56-32.

The front of the engine thing is the cam timing adjustment mechanism. It should also have one or two vacuum hoses going to it. That reminds me that there is at least one vacuum hose that connect to the underside of the intake manifold and, and it is an acrobatic feat to make sure it is connected. Reach in from the front and snake your arm in.
The idle thing could also be a vacuum leak.

I know one of them is missing now too. weee. this should be fun

Red- Where does this connect to, and how. Pictures would be lovely (borrowed the pic from the wiki)

Yellow. Wires that broke now

It's been a while since I've had a 104, but I believe that connects to the EGR.

EGR is hooked up

final update, I got a new harness in. Idle issues and hesitation are gone. It was the control harness.