Thanks for the good info, everybody. I'm trying to sort things out. I don't think my secondaries are sticking yet, as I just started seeing the symptoms. I'll clean things up when I put my EH'd UIM on, just in case.
However, in another thread I read this info:
Thoughts?
Originally posted by dbird:
look at this post by Mark on 8-01-04 in troubleshooting.. it might be your problem????
I waited to run through a tank of gas before I posted this to insure there was an improvement.
I finally broke down and replaced my fuel pump with a new Ford unit. I had the usual problem - fuel starvation in turns with less than 1/2 tank of gas. It has been this way since new in August 2000.
I have been in the tank 3 times over the years. It did not look like a bad pump - just bad design as far as fuel pick-up is concerned.
Well, the wait was worth it. Ford has at long last produced a modified or "improved" pump unit. The Motorcraft pump/sender unit part # FPS192 is replaced by #289.
The entire canister/pickup design has been changed. In addition you have to perform a minor modification to the tank bottom to install the pump. The new pump suspends from the tank top rather than mounting on the bayonet lock on the bottom of the tank. This is all spelled out in the pump "kit" that comprises the FPS289 part.