Thanks for all the help! I have discovered that i have an intermittent alternator problem,from the way it acts it may be the regulator so i am going to change that first,if that does not help i do have a spare 120A one that i bought a long time ago for my wagon but never got around to using it.
Bsmuwk Thanks for the advice i think even the alt cures the problem i will still follow your information as its seems to be a good idea as many threads mention the manifold cleaning and at 150k miles its probably needed, Any suggestions as to where i might find some info on where these items are located?

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles