Hi there,
I have an interesting situation that has nearly driven me insane. Whether hot or cold, idling or driving, it will randomly buck. For example yesterday morning drove fine to work. Yesterday afternoon it was terrible. This morning it played up for nearly 5 minutes. This afternoon drove through 150 miles of mixed traffic like there was never anything wrong with it. It may only do it once or it may do it for 30 minutes. If it is doing it at idling it usually wont stay running for long. I have replaced: front o2 sensor, cam sensor, crank sensor, coil pack, wires, plugs(NGK), air filter, IAC and controller(all OEM parts where applicable). Although I havent replaced the TPS from prior attempted diagnostics it runs the same with it unplugged.
Any input would be appreciated
