Re: Endless issue, starting to be hopeless
Agree, momentary loss of the throttle signal will tell the engine to go to idle but since is normal operation may not set a code if momentary.
I would instrument with Torque Pro to monitor and log a number of things: throttle position, speed, time, rpm, MAF, coolant temp, voltage., ... Drive until it happens, then review the log file (should be in .csv format & individual file by trip.) Suspect something is going to zero.