Hi guys, thanks for reading... I have a problem with my 1999 Ford e-150 van, it misfires after warming up (about 15 miles of driving), when I first start it and drive it, it works just fine but after a few minutes of driving the engine "shakes". Today I had a chance to get some codes and this is what i get...
P0153 --- 02 circuit slow response (bank 2, sensor 1)
P0305 --- cylinder 5 misfire detected
P0401 --- exhaust gas recirculation flow insufficient detected
The plugs are brand new (replaced before the codes), that was the first thing that came to mind but that did not fix the problem...
Guy at the store thinks could be a crack on manifold or CO2 sensor but he honestly didn't seem too sure, so I decided to ask here.
Any ideas... I hope this could be an easy fix, thanks a lot in advance.