Poor Acceleration between 3k and 4K RPM

[LMBACON55]

02 Ranger 3.0 I cleaned the maf sensor, little change. So I replaced it with a new one, started giving me p0171,0174 codes. Put the old on back in no codes. Other videos pointed me toward the coil pack and syncronizer shaft sensor. Found coil was weak on half the coils and found a burnt spot on the syncronizer sensor. So I replaced the coil pack and syncronizer shaft & sensor. I got my power back, no shuddering or jerking, no codes good readings on MAF sensor. Did a lot of video watching. Hope this helps other, and thank for other tips on the forum.

 

[88workcar]

how do you test a coil and see that it is weak?