so earlier today i was taking a load to the city dump and my truck started acting really funny, sputtering, lackof fuel, etc. so i filled it up and it seamed to run fine afterwards. i went by autozone and rented a fuel pressure guage and hooked it up, only 35 psi pressure, should be 50? truck has 175000 miles so im thinking its time to replace the fuel pump? i think this is the culprit to my truck acting up this morning and also the underwelming amount of power it has had since i bought it. does this sound like a fuel pump problem? Also is there anywhere to get a good rebuilt fuel pump?

 

It could also be the fuel filter. But were it mine to do on a truck more than ten years old I'd replace both while the tank is on the ground so I'd not have to think about them again for quite a long time.

 

yeah, i guess ill just bite the bullet and pay the 180 the parts store wants for a pump, lol.

 

35 is low. i don't know how low you can go before you have insufficient pressure, but i'd bet your on the borderline and with a little fluctuation, you drop too low.

 

well it was at 35 psi when the truck was running "good" i couldnt get it to sputter when i had teh guage installed (of course) but i am thinking that it fluctuates a little and when it drops is when i have issues.

 

35psi *might* be fine for idle, it definitely won't be for anything beyond about 2000rpm.
My guess is the regulator has failed. Just replace the whole pump and be done with it.

I recommend the delphi pump over the airtex.

 

if u want u can just get the fuel pump from here
http://www.onlyfuelpumps.com/oem-rep...p-hfp-379.html
someone made a write up here about this pumps and it went great.
To bad i found this after i paid 250 for a new unit

 

can i get at the built in filters on teh module to clean them?

 

also, is there a way i can bypass the oem pressure regulator and put an adustable pressure regulator on right on the fuel rail?

 

39 PSI is the norm for a 1994.