I am experiencing somewhat sluggish acceleration. Not bad, but noticeable. The engine sounds louder at idle, no rough idle (that I can tell), but louder.
The codes I get are P0135 (most common), P1133, P0155, and P0134. I clear them and I can drive maybe 30 minutes highway and the P0135 returns all the time. The other codes are intermittent. I recently had my fuel pump replaced, but this issue existed before my old one died. However, when the fuel pump was replaced, I have been noticing a gasoline smell. The repair shop that installed it said it may be normal. Please assist