I have a 1980 240d with 70,000 original miles. When I drive up the slightest incline the car drops 15 MPH.

Last night it started to happen than I was force to pull over to the side of the road. The car whould not stay running. the incline that started the problem normally would not even be felt.

I waited 5-10 minutes started up and the car drove fine home.

Please help, The temperature was 45degrees outside and the engine temp was normal. The car has a large fuel water separater. Could thie be fuel pump problems?

My battery is also a little weak, could this effect this?

Thanks in advance for your help.

Regards,
Chris Patko

It sounds like you need to replace the fuel filters ... especially since you said that after shutting it down for 5-10 minutes it ran fine.

__________________
1980 Mercedes 240D
1982 Mercedes 300SD
1985 Mercedes 300D
1993 Dodge Cummins Turbo Diesel

Thanks to this Web site I am back on the road.

The large Luber-Finer Water separator filter was very dirty. I changed it and all is well.

Thanks again. I now can hit 85 MPH.