Looking for help on where to start. Have had to replace a few COP's in the past and replaced all spark plugs 20k ago.

Truck runs rough at idle and sometimes stalls when changing gear. Strong exhaust smell when sitting idle. If I put my foot in it there is hesitation. Engine seems to smooth out quite a bit but also seems like it's getting more power in stages.

Any help is much appreciated.

Codes P0426 and P0345

 

P0345 could mean one or more of the following has happened:

a wire or connector in the circuit could be grounded/shorted/broken the camshaft position sensor may have failed
the PCM may have failed there exists an open circuit
the crankshaft position sensor may have failed Possible Solutions With a P0345 OBD-II trouble code, diagnosis can be tricky at times.
Here are some things to try: Visually inspect all the wiring and connectors in the circuit Check for continuity in the circuit wiring
Check the operation (voltage) of the camshaft position sensor Replace the camshaft position sensor as required
Check the crankshaft position circuit as well Replace circuit wiring and/or connectors as required Diagnose/replace the PCM as required.

PO426
https://www.yourmechanic.com/article...y-logan-utsman

I would suggest first unplugging these sensors and spraying them with contact cleaner then plugging them back in, and make sure they are seated all the way.

 

I know it may sound kind of ridiculous but I had the same problem sound like .. there is a hose that connects to a plastic pipe behind the throttle body and on mine atleast the plastic cracked and I couldn't find a part for it at auto stores on Ford.com it cost $40 I bought a 1" inside diameter I believe piece of heater hose cut about an two inches off took a smaller hose should be same size as the hose that will be on the pcv valve tree took jw weld connected the little hose to the 1" heater hose and put it on the back of the throttle body should solve the bad exhaust problem