I was going to say lift pump, but the fact that after you get it started again it runs fine all day makes me question this. My '95 had a problem where it would start and run fine for several minutes, and then die. I was also having a huge whoosh when I opened the fuel tank filler. My fuel lines were fine, my filters were new, so after cruising through the board searching all related posts I decided to try a new lift pump. Problem solved.

It's not a difficult DIY depending on your skill level. The pump was not terribly expensive several years ago, about $150.

Just a suggestion if other things don't pan out.

Rgds,
Chris W.
'95 E300D, 337K

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