I replaced my fuel pump last year and it's out of warranty by 12 days.
The car ran I parked it and the next day no start but I can here the pump run prime and shut off.
I put a gauge on it and its got no pressure.
Is it possible that the regulator went just like that?
Is there any way to check the regulator?
Thanks,

 

When the fuel pressure regulator fails, its usually the result of a torn diaphragm. That will allow fuel to enter the vacuum compensation line on the regulator. Pull the vacuum line off and check for wet fuel.

 

we had a Malibu do this once, suddenly one day out of the blue the car wouldnt start, pump ran but no pressure.

I couldnt figure it out. By the time I towed it to my house everything was fine. It's been running fine for 2yrs since this incident.

Only thing I can think that makes sense is the regulator stuck wide open, but it hasnt happened more than this one time so I dont know.

To check you could put a gauge on it then disconnect your return line and put a hose into a bucket and see if there's big flow, if there is big flow and 0 pressure then your regulators not doing it's job.

 

Well no wet fuel but I put my mighty vac on it and it would not hold vacuum it is leaking down.
So I guess I will replace the regulator and see what happens.
I hope that fixes the problem I hate to have to buy a new pump and pull the tank down agine.

 

I checked the regulator on my old LT1 that was running before I pulled it out and it does not hold a vacuum either.
So I guess the regulator is good.
I guess the pump is bad but I have never had one run but not flow or put out any pressure.
This sucks if they don't warranty the pump I will have to get one from a salvage yard because I am so broke and no money coming in.
Or I could scrape together enough money to get this one.
http://cgi.ebay.com/ebaymotors/255-L...Q5fAccessories
It might be better than one from a salvage yard.


----------------------------------Edit-------------------------------------
I was out of gas.
The needle was 1/16 of an inch above the red line.
It always dies when it hits the red.
I was going to get gas when the car did not start.
So lesson learned keep to the original plane and never let the tank go down below 1/4 tank for fear of frying the fuel pump.