Truck doesn’t change gears smoothly

[Zocaid]

(06-22-2022 )Rawze Wrote:  If you have leaky injectors or if the metering actuators are leaking and worn out, it can be harder then normal to shift, as the engine does not rev down as well as it should when letting off the fuel pedal.


Run an overhead valve adjustment again and then do an injector leak test on it.
http://rawze.com/forums/showthread.php?t...8#pid67948

A person can also monitor the live fuel flow into the engine to see if it goes to zero mg/stroke while idling.. or fluctuates around up and down like a sign wave. This is an indication that there are issues with a metering actuator.

Hey Rawze,
I have changed out actuators and I was having power issues that got better. I’m still getting a jerk when it goes in gear. Do you think this it could be shift tower or something in the tune? It’s a white Volvo so I’m sure it has probably had some fleet parameters or something on it. Is there something in the ECM that could mess with your shift like that?