2G Help!!! Car goes lean after driving

[Mham2k]

So I have read every thread in this forum about cars randomely going lean but I believe this issue is not like the others.

1996 Eagle Talon TDI AWD 60k
I have big turbo, big injectors, new fuel pump, new fuel filter, new wires, fresh gas, new stock MAF.

When I cut the car off then back on it runs fine until I drive it and it goes lean and cuts off again.

It's not the fuel pump or filter
It's not the MAF

Check the image below, this is a log of what happens to me

The car runs fine on timing, fuel, and maf at idle.

When I start driving the cars everything spikes like it should but the timing slowly trails off until it is underneath where it was at idle. When this happens the car runs lean and eventually cuts off. When I turn it off and back on it goes back to normal until I drive again as you see in the log in the Dropbox link below.

https://www.dropbox.com/s/5qx1ma05wl962le/20161206_132227.jpg?dl=0

Please help, I have been trying to figure this out for 2 freaking weeks. Now that I logged it I see this timing but I don't know why it does this.

 

[chrysler kid]

Possible, but it's new

Did you re wire it's connections and use a relay to boost power directly from the battery?

 

[Mham2k]

Did you re wire it's connections and use a relay to boost power directly from the battery?

Yes wired to battery on relay that triggers from cars signal wire. The pump runs with no problem and it continues pumping even when the car goes lean. If you look at the logs notice that the fuel flow only goes down after the o2 starts diving.

 

[Mham2k]

SOLVED...

Chances are this problem won't happen to anyone else.

The fuel sending unit bottom plug was my issues. Not the plug on top of the sending unit, the plug under the sending unit that goes from the fuel pump to the under side of the sending unit.

The negative female connector from the fuel pump had a broken tab that caused it to loose connection randomly while the pump was vibrating and gas was moving.

The solution was the get a new (used) plug and swapped it out. Problem solved.

 

[steve]

Was it broke at the fuel pump or at the bulkhead connector on the underside of the cover?

 

[Mham2k]

Was it broke at the fuel pump or at the bulkhead connector on the underside of the cover?

Was broke at the connector under the cover.

The plastic was fine, a metal tab inside the plastic was broken off which caused a bad connection.

That's why it was so hard to find, I stumbled into the problem. I hooked up the pump out of the tank, forced the fuel pump to run, and started pulling wires until it cut off.