I have a fuel issue with my 89 f-250 I6,5 spd 4x4, and am stumped.so far This is what I've done:
Check codes, no codes
new lift fuel pump in both tanks
new high pressure pump in the rail
all lines are good, no holes, or worn spots
new fuel pump relay
new ecm relay
new fuel pump relay...
my new to u truck is a 94 f150, 5.0, auto, 4x4, shift on the fly. I bought the truck at a fair price, but put an awful lot of money into it, hence, my problem. it shifts really good 123, and 321, smooth, not jerky. when it goes to drop into 4th, it acts just like it went into n, and you have to...