Thanks again Mike,
I couldn't get to the car tonight. It's sitting in my friend's garage since I don't have one. This is very inconvinient as I have plenty of time these days and I don't want to go there when she's not home.

I have to get it fixed by the end of the week or will have no choice to take it to MB dealer. Hate that. None of my cars have ever been to a mechanic shop. (except once for rebuilding engine on my 1977 VW Golf)

One of the site addresses didn't work. The other one discussing the fuel pump and relay was useful.

Now I have a list of items to be checked. Will keep you posted. Appreciate your help.