I have replaced external fuel pump and filter ,pump relay, sock on in tank filter ,car still stalls at idle after its been running for a couple min.front pump wines and seems to be straining to get enough fuel from intank pump. intank pump is not very old but may not be supplying enough pressure any...

I have an 85 240 replaced both fuel pumps and filter it seems to be straining to draw from the tank and the external pump runs warn after it runs for a couple min. it shuts off.. pulled intank pump and the sock strainer is almost gone . could the sock be my pr problem? Why is a relativly new in tank...