Ok guys I bought a 97 F250HD with a 351. It has the dual tanks and I can run on the back tank with no problems, when I switch to the front tank I can only run for 2 or 3 miles and the engine cuts out, check engine light comes on. It loses all power but when I switch back to the back tank it runs just fine, I switch back to the front and another 2 miles its cuts out again. The dealer I bought it from replaced the front fuel pump. I know this cuz he left all receipts for any repairs in the glove box. I know the mechanic who installed the parts and trust him. Can anyone shed any light on my issue here please?!

 

Just because the pump is new does not mean it is working properly. Test the fuel pressure.

 

Had a brand new airtex pump do this to me. Yanked it out and got a new one from the dealer ........ expensive but works fine. I had the tank cleaned also because the front pump had been dead a long time and the tank was ugly inside.