Why does my dodge 1500 ram with the 5.2 liter engine chug going up hill but only between 1600 and 2000 rpm then I hit gas pedal and it goes away?
It could be a few problems but if all the cylinders are firing most of the time and you have good acceleration it could be a faulty spark plug, fuel injector or ignition wire(s).
Sometimes a cracked or broken vacuum line, poor electrical connection or mechanical fault can cause this kind of problem.
In rare situations this could be related to a transmission problem like a torque converter clutch solenoid or shifting malfunction like a sluggish shift valve.
If there are no codes stored in the computer memory and no check engine light on then most of the time it could be just a simple tune up.
Your mechanic can run a few tests to confirm this and rule out any other areas that can be related to this problem or cause this malfunction.
Keep us posted on your progress.