Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
2013 Honda accord v6 hesitates and mildly jerks thru acceleration
I have ruled out by testing. Torque converter, maf, dirty throttle body fuel pump,plugs, vtec and vcm solenoids and switches. The only testing discrepancy I can find is the following. When comparing TP voltage to APP %, from a chart in Mitchell, I'm dead on at 0% and 100% but at 25,50 and 75% it's off by 200mv. Could this be the issue? The whole range is only 4V so 200mv amounts to about 5%. Is that enough to confuse the Pcm?
My first thought is a tear in the intake boot between the MAF and throttle body. Hondas don't set trouble codes for this issue quickly like other makes.
I know you said you eliminated the torque converter from your list of suspects, but to be honest, the only other thing I have ever seen cause that kind of jerkiness of that generation Honda with that drivetrain has been converter shudder.
And even then, a fluid flush following manufacturer recommendations and a tune of shudder guard additive cured the symptoms.
Usually they are quite good at picking up misfires, and the throttle and accelerator circuits are closely monitored for issues.
