I thought I would post this about my 88 300SE. The car seems to be having some strange issues with power, starting and idling. It takes two tries to get it to start and idle without stalling. It idles at about 650rpm with only minor fluctuations. The shifting is nice and smooth but it seems to be a little slow or late shifting. Occasionally when decellerating and coming to a complete stop, it will stall but will start up without any problems once at a stand still. It just doesn't seem to have any power and seems to be the slowest moving six cylinder that I have ever driven. Any suggestions would be appreciated as always.

Things that I have had done to this car:
Complete Valve Job ; replaced head gasket and all other gaskets, hoses and seals on this car including intake manifold gasket and injector seals.
New Timing chain, Tensioner and Guide Rails
It came with a new Exhaust system.
New Idle Control Valve
New Distributor Cap and Rotor
New Spark Plugs and wires immediately after valve job.

I had this same problem before all this work was done. It runs alot better but still just doesn't seem to be performing like it should.