Fuel Pump Question

[fliprayzin240sx]

Do fuel pumps have some kind of sensor that shuts it off when it slushes around in your gas tank? I'm curious whats up with my GTR pump. Basically, the pump bracket that its hooked up to came off its mounting inside my gas tank (S14 Chassis). While sliding and doing left turns, my Fuel pressure would drop from 3 bar down to 1 bar. Before I opened the tank, I was thinking maybe I had less gas than my gauge is showing me and the gas is slushing around. But when I opened the tank up, the bracket was off. So I just mounted it back up, did a couple of test run and it was good again.

I still down understand how having the pump bracket off the back sliding rail will cause my pressure to drop momentarily. And when it fell off, the pump is wedged in the bottom, standing straight up.

[Sileighty_85]

loose connection causing little or no power momentarily?

[Slidin' Sam]

I know that when you have low fuel in the tank the pump gets starved and does not opperate at its best potential. Add cornering or drifting (sloshing fuel) the pump becomes even more starved. Also, over time, from heavy cornering/drifting, the oem fuel gauge becomes in accurate as the float begins to stick. Not sure if this helps or not...this is all based on previous experiences with the s-chassis and gtr/walbro fuel pumps.

[fliprayzin240sx]

Thats the first thing that popped in my head...that I must be low on gas and the gauge is inaccurately showing that I have 3/4 full. I popped the top and it was still full.

As far as power, checked the wiring and didnt notice anything funky. Buddy of mine actually had an issue that same day where his pump died. Opened up the tank and found that the ground into the plug into the pump came off the spade. Fixed that on his car and car started right up. 30 mins later, my car started acting spazzy.

[fliprayzin240sx]

PS: Reason I'm asking is I'm trying to eliminate the idea that my pump is going out. That this issue was just a fluke as the pump wasnt where its supposed to be.

[Genex626]

Idk :( wish i can help