mercedes 190e
 

hello.... i need help my 93 mercedes 190e 2.6 sometimes wont start i have to turn the key off and on mabe 5 times and then it will start. i change the fuel filter and i can here the fuel pump what do i check for first thanks for the help.

Do a search for fuel pump relay- they get old and suffer from solder joint cracks. Mine would stall for no apparent reason, and after reading/searching threads I pulled the relay, took the relay cover off and reflowed some of the joints that looked cracked using a loupe to look close.
Worked great until about two weeks ago, and have had a few stall issues. Might be time for a new relay.