Ok so I decided to check my fuel pressure whats it sopost to be at the rail with the engine running and not running!!

 

Checking the pressure is a good idea I'd have to look up the specs when I'm home, but I really think you should address the issue indicated by the computer first. Fix the known problem before treating other areas. Weather the pressure is there or not the computer is still having a problem sensing the pump. It really is as simple as sliding under the truck unplugging the plug and measuring the voltage, testing for short and checking continuity. If its all working fine then check the connections at the ecu. Troubleshooting while ignoring another issue in the same system is like shooting in the dark.

 

x2

 

Ok we'll the o2 sensor didn't fix it guys now what no cel or codes could it be my vvs? My speedo needle bounces a bit over 55mph

 

I've tried to check fuel pressure but can't get a reading I've tried two different sets of gauges and nothing truck runs ok under 55 if its stopped and you floor it it will run and other times its sluggish and then it takes off I did notice awhile back that my rear tank fills up my front tank witch would be a bad check valve in front tank so if I'm running on my rear tank would I be lossing pressure then if gas is going into the front tank?the truck does have 145000 miles on it