91 300ZX TT Fuel Issue

[SmokeyMCN]

So my car has this Issue that when ever it gets between half way full and 3 quarters full, if i make a turn, like a left turn from a light, The car will act as if it is out of gas or off.
I hit the gas, Nothing happens with the RPMS, they slowly drop, Boost guages from - to 0, If i put the car in neutral, it will shut off, When i try to start it, it will crank for about 20-30 seconds before starting back up , If i keep it in gear, there is a chance that it catches it self before it turns off and it just starts going like normal again, as the tank gets lower, it starts happening more often.
There is no pressure sound when I unscrew the gas cap either.
When I bought the car in Jan. the guy said he put a new high flow fuel pump in, but he had installed it himself and it needed to be redone by some one that knew what they were doing. The day I bought it , I had the fuel pump re installed, Cattilyc converteres put in, exhaust changed, tightened all claps around intercooler and engine and everything and the next day I dropped the car off to get painted, and now that I have the car back I see this issue with it. if it helps, Sometimes I can hear the fuel pump or what ever make a sound when I turn on the car.
The day I had the fuel pump replaced, the mechanic showed me under the car, and showed me a little dampness underneath the tank area, But if the car were to sit in a spot you cant see a drop of gas on the ground, there is no dampness or anything around the top from the trunk area of the fuel pump.

Tomorrow I will be attempting to redo the fuel pump myself, so if you have any tips or know any guides, it would be appreciated, thanks

[chaunceysj]

if the pump is using the stock wiring it should be simple to get to it and mess with it. does it only happen at left turns? or any turn?

[SmokeyMCN]

Any turns, but it doesn't ALWAYS happen , like I said it starts happening a little bit above half a tank and gets worse as the tank gets lower,
It happens on right turns too, sometimes it'll happen when I turn on to like a steep driveway too sometimes, this rarely happens because I try not to let the tank get less than half way
Also if its the wiring for the pump, what do I need to do ? I am absolutely clueless as to what I'm going to be doing , I'm just going to get some tools and start messing Around in that vicinity, so is there is any specifics you know of that I need to look for , please explain.

[chaunceysj]

well the tt fuel pump should be right behind the seats, in that hump are between the shock towers. just make sure all the wires are connected. as far as the fuel problem, i could be very wrong however it seems like its running out of fuel when the tank is not level. check to see if the pump has a pick up line hanging down to the bottom of the tank, if it doesn't you might be starving the pump for fuel when the tank is low or turning. if it was a the fuel pump relay, im pretty sure the pump would not be working at all. does it ever hesitate in a straight line when on a full tank? or half tank?

[SmokeyMCN]

That's what I was thinking , that it had somethin to do with the leveling,
I dont ever feel hesitation but some times I do, rarely but its not really that bad when I notice it , also , this problem also sometimes happens when I red line , for example I red line first and then change to second when I change,the same problem will happen but sometimes it just happens for a split second and it never takes as long to catch it self , like the others either the car will shut off or it catches itself after 30 seconds, I'm this situation it will catch it self by like 10 seconds but usually its lower than 3 seconds for it to catch it self, but this rarely happens


Like I said I'm pretty much clueless about thus problem and the fuel pump so could you gimme a little mini tutorial as to things I need to watch out for lr things i need to not touch when I'm messing with it , or what I would need to do depending on what I see