redneckfromnb

i got a 03 venture van.it usually runs good but as of the last 2 months it periodically will lose power and shut down,quite often it will start up after you let it set for about 10 minutes.it might do this once and go for a few days without doing it again.as of the last 2 weeks it doing it more and moreive replaced the fuel pump and the only filter ive found on it,i use this van daily for my job and cant leave it at a garage for them to do there guess work,it dosent throw any codes at all.plugs and wireslook good,any help would be appreciated.
thanks

tech2

next time the fault is active; check for spark

redneckfromnb

cant see it bieng a fire issue as it will kick right off after it quits,sometimes you have to keep starting it till itll run but it does run,almost like it isnt getting enough fuel.fire issues should throw a code wouldnt it

tech2

no spark will not set a dtc.
sorry but your descriptions are vague.

low fuel pressure symptoms can easily be seen by viewing fuel trim. do you have a scan tool that can view datastream or live data.

stalling from low fuel pressure will usually be drawn out as the engine stumbles then stalls. Stalling from the ignition system can be immediate(depending on the fault) like turning off the key.

redneckfromnb

I do have a obd reader .it dont stall imediately .does stumble before it stops.but will start and stop frequently let it set for about 5 minutes and it's like it never happened

redneckfromnb

i was able to check the fuel pressure,when running 52 lbs and about 5 minutes after running with ignition on it drops to 40lbs,its a new fuel pump.not sure where to look now

tech2

the fuel pressure spec is 52-59psi and should not drop more than 5psi after 1min when shut off.

if you can view live data, view the short and long term fuel trim. If its adding fuel more than +10% there is a fuel delivery problem. Do a sustained wide open throttle acceration and see what the fuel trim does.

redneckfromnb

no im not able to view data ,so your saying it could be in the new pump.

tech2

no, I'm saying test don't guess.