Volvo Repair: 240 starts then dies, fuel pressure regulator, gauge repair

Question
Hello. I have an 83 240 DL with the B23F engine and auto. trans. Out of the blue it will no longer stay running. It starts fine but then dies right away. I can keep it running for a few seconds if I pump the gas. I've changed the fuel pressure regulator and the only other unknowns are if the pumps are putting out the correct pressure or the check valve on the main pump. I changed the filter this past summer. Is there anyting else I'm missing or anything not fuel related that could cause this problem? I am mechanically inclined and the odometer hasn't worked since we bought the car. Thanks for your help.


Answer
Hello Craig..
             Often problems occur in the gastank.There is a small filter on the end of the actual fuel intake pipe...I think your problem relates to a piece of rubber hose that connects the top of the fuel/sending unit to the bottom...often this rubber hose deteriates with time and fuel supply is diminished...the intank pump(above the broken part)is designed to make volume of fuel available to main pump...but with the broken hose...lack of volume will create problems.
             The act of getting into tank and repairing this problem is a bit of a challange...if you have a wagon...you'll have to unscrew 2 screws on bottom of wooden floor panel in the back storage area...lift panel...remove 2 screws holding small access door...pry door open..you are now looking at the top of tank and the sending unit...notice quality of metal on fuel lines..often very rusted...you may have to replace complete unit instead of repairing it if you are unable to take out unit without  damaging the metal lines...assuming all is unrusty...remove collar/metal ring by using old dull larger screwdriver... tap on with hammer sliding ring off...use good light oil to spray on area...the unit will be lifted out while being carefull not to damage float for gas gauge...repair or replace as needed...clean area well.
              Also....check all fuses and be sure all are of GOOD quailty...no cheap corroding aluminum ones should be in your fusebox...clean connections well with small metal brush...like plummers use for cleaning pipe...
         Craig...other problems may exist...loose wiring harness connections at E C U...bad gas.
            Best wishes,
                        Bilbo
    P S...use a larger fan to keep air moving as you repair of tank...todays gasoline is nasty stuff and it can hurt you...USE A FAN PLACED 8FT AWAY FROM THE JOB