98 f150 4.6 DTC 1401, 0303, 0401, 0402 problems
I have 158K miles on my f150 and i just got the motor rebuilt due to the cats being so clogged up it burned every valve in the engine. So KEEP IN MIND THERE ARE NO CATS ON IT. Just a Flowmaster.
The truck is running rough at idle, and a couple times it actually died on me while puling up to a stop light, when getting up tp speed i feel it slowing down for a second then speed back up, gas mileage is around 11 - 12 Average.
I have cleaned the throttle body and a whatever i could clean out of the intake manifold, and MAF sensor, still nothing.
I already tried to change the DPFE but nothing happened, so i took the part back to autozone, and i exchanged it for the EGR Vacuum Solenoid, still not doing anything, Now since i left the New solenoid on, the truck throws the P1401 and P0303 codes.
I'v cleaned the EGR valve numerous times, lines have all been replaced, except the one on the back of the TB. And still nothing..
Could having no CATS cause any of these problems? Im lost