surging

Hi all and Happy New Year! 2003 Ranger Edge 2WD V6 3.0L Manual Non Flex I have just done a engine swap (1st time doing any engine work) and have everything up and running great (just like a new truck). One more problem remains that followed me from before the swap. I have a surge/buck that...

I have a 94 ranger with the 3.0 and 5spd tranny. The issue is low power/ bad mpg especially up hills, and occasional backfiring. Symptoms are Much worse in open loop mode. A quick rundown of new parts I installed on the truck: plugs, wires, cap n rotor, iac motor, fuel pump, both o2 sensors, all...

1997 4.0 v6. Had a CEL for the Cam sensor. Pulled it off and discovered the shaft was trashed. Replaced the cap and the shaft. I also replaced the serp belt and fuel filter. Truck started right up. There are no codes ( CEL lights not on) but the engine stumbles when braking just under 10 MPH. It...