Q: 1991 D250 Runs poorly after 10 minutes running. on 1991 Dodge D250

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Truck misses very badly 10 mins after starting, wont start again very easily, until cold again, then will run perfect for 10 mins until engine warms up, changed cap, rotor,plugs, coil is good, any suggestions read about a coolant temperature sensor, ?
(1) Answer
(2) Comments
this motor was replaced with a multiport fuel injected motor, (1995-2001) not sure where to find plugin to scan codes,not looking like there is one below dash anywhere, a mechanic told me some kind of sensor in the distributer could be bad,after you shut off motor, but leave key in on position, you can hear fuel still shooting to injectors and the fuel press regulator on fuel rail