Hi guys, I'm an Italian owner of '98 Land Cruiser UZJ100 V8 petrol with 180k miles that has been well cared. But recently it happens in the morning a rough idle that disappers in 10-15 minutes or as the engine is warm. The rough idle is worse when vehicle is in D gear than in N or P. There is no problem during accelerating but at stop you can feel the rough idle and see the tachmeter goes up an down slightly. So I changed spark plugs, fuel injectors, fuel filter, 02 sensors, fuel pressure regulator, MAF sensor, temperature sensor for E.F.I., EFI Main relay, fuel pump but the problem persists and I've never found any DTCs on Techstream diagnostic tool.
What do you think about? Any thoughts?ù
Thanks a lot