Well , I did leave a lot of stuff off when I put the 3.4 in there.There is no charcoal cannister and extra line from the tank as its not a stock tank at all.The air pump is not plugged in as it does not work with headers , and I only have 2 vacuum lines that are in use.Also I don't have a PCV , I went with open breathers on the valve covers.I allready checked for vacuum leaks , and nada. I think its still got something to do with either timing or the way my pump wires are shorting since I relocated my fuel cell.It wasn't surging like this before.I'll be fixing the wiring up today so I can get it back on the road without worrying about the fuel pump stoppingon me at odd moments <img src="/forums/images/graemlins/smile.gif" alt="" /> I'll fire it up and jiggle the wires one at a time untill it stops again.Although there are only 2 wires that actualy control the pump.It does go through a larger harness and the whole harness might have a loose connection somewhere.

1996 Jeep Grand Cherokee 5.2 with mods.Hughes Air gap intake , 52MM TB , ford injectors, 2 3/4" lift, Doug Thorley headers , HID headlights with LED , HID fog lights , glow gauges , a few others