My 1999 Chateau van starts easy, then stalls after 5-6 seconds. Originally check engine light came on, OBDII reader coded for lean running. First item to check was filter.Problem surfaced after changing fuel filter. OBDII reader indicated right fuel bank running lean. Connected press gauge to fuel rail, and measuring 30 psi gradually rising to 39. Dropped fuel tank down to test in tank pump. measured voltage at pump connector and measures 10.6 volts.. Replaced tank relay and no change in voltage. Replaced battery and checked voltage to fuel pump. measures 13.5v dc. pressure gauge measures 30-35 psi. Engine starts easily, but stalls after 5-6 sec. made direct connection on fuel line, with no filter. no change in psi. Van ran with no stalling before fuel filter change. I am not sure which direction to go next. Any suggestions appreciated.