89 S5 Vert cuts out on left turns!?

[ROT8TOR]

Ok... Sorry its taken so long to get back to you, but I just now had time to f#@k with this.

The tank looked good and the "bowl" in the tank was clean and practically debris free. The sock looked good and also had very little debris.


What do I do or test next?

The pump is out and I'll be awaiting your reply.

[RETed]

Do you have something that can show you fuel pressure?

If so, there is a "dead end" pressure spec for the fuel pump (at full voltage).
That's the easy one to check...

Next, you'd need to be able to watch fuel pressure at the fuel rail, which will usually call for a "T".
Run the gauge to the windshield and tape it there so that you can watch it while you're driving temporarily.

If it is fuel (pressure), it's either going to be a drop if fuel pressure due to a mechanical failure, or an electrical one...


-Ted