fuel pump??? not again

[Pumpkin Orange]

Ok here's the low down turn key on fuel pump runs longer than usual engines starts fine bit I can hear something running I usually don't hear .The last time this happened I had to replace a fuel pump and three investors or so I was told any insight greatly appreciated

[late_99_PSD]

Sounds like your vacuum pump. Without more explanation its hard to say.

[Pumpkin Orange]

Negative like I said I've heard and experienced this before I'm just trying to head it off at the pass

[michaelaiman]

What do you mean the fuel pump runs longer than usual. It will run for 30 seconds or so then stop if you dont start the engine. This is timed through the PCM I believe.

[Pumpkin Orange]

As noted from prior incidents if your fuel pump starts to loose pressure it cycles longer to reach pressure and sounds tired ,running under these conditions will cause injector fuel starvation .I've replaced the HFCM before with oem part this time I'm just replacing the pump.itself with an airtex at almost half the cost anyone used this method

[Pumpkin Orange]

HELP!!! I've posted this on the urgent 911 thread as well after replacing the hfcm ,the airtex didn't work , I still have the fuel pump duty cycle hum which I know is not normal does anybody have a clue ???? Fuel gauge is on the way

[jesilvas]

You're being ridiculously vague. Bit if you "think" it's cause it's not reaching pressure, check the actual psi. Or throw parts and labor. Drop tank, check pickup tube/screen. New fpr. Change filters.

My Samsung SGH-I997 made me send this.

[michaelaiman]

Originally Posted by jesilvas

You're being ridiculously vague. Bit if you "think" it's cause it's not reaching pressure, check the actual psi. Or throw parts and labor. Drop tank, check pickup tube/screen. New fpr. Change filters.

My Samsung SGH-I997 made me send this.

Agreed. Until you get a gauge on it, its gonna be all guessing. you may have to install a vacuum gauge on the fuel pump pick up line if you dont want to go through dropping the tank. Plastic or metal tank? metal tank had delamintion problems and it may have clogged the pick up.