I have an annoying hesitation from idle (stop). 93 F-150 2wd 300 4speed eod trans. All new sensors tp,map,o2,evp; new rotor, cap, wires, and plugs. Also poor mileage 15 was around 17+. No codes, been through diagnosis in haynes manual, no problems. Was worse missed bad around 30 mph but o2 fixed that. Psom problem? Read that some where. Possible to check?
Help before i lose my mind, been fighting for months.

Thanks in advance.

 

check IAC and think about new air and pcv filter if you haven't changed those yet

 

My 92 302 did the same thing until I had the injectors professionally cleaned. Do clean/replace IAC first it could be sticking. I also remember a post on here about restricting the EGR Valve. Try search.

Hope this helps