My 93 f250 5.0 is having major issues maintaining idle when coming to a stop and severe engine stutters when accelerating. I’ve replaced most of the spark system, plugs, wires, distributor cap and spindle. The issue seems to be with the fuel delivery, and I initially suspected the fuel pump, and the rear one was bad but the issues persisted with the new front pump as well. I’m hesitant to think it’s the injectors but I don’t have any codes relating to them. The only codes I have are 41 and 95. Any ideas on what might be my issue?

 

As you know the 41 code is pertaining to the O2 sensor circuit and the info it is sending.. It could be the sensor or it could be the info it is sending.to the vehicle computer.

Without getting into some detailed checking which you may not have the equip to perform, suppose we consider replacing the O2 sensor if it is still original..
Strongly suggest purchasing a sensor from Ford, getting the right one the first time..

The 95 code might have come up because you did some work on the fuel system, so good idea to erase that code and see if it comes up again.

What do you think ?