2005 1mzfe rough idle, acceleration jerky

[thecountryboy]

Hi all,

I have just joined after lurking for a long time!

I have a 1mzfe with a rough idle and hesitation through acceleration and feels jerky in spots through acceleration. I have a new MAF, afr sensors etc. And no vac leak that I can find. The fuel trims are funny too, link to vid here:https://youtube.com/shorts/ZZpNuyo0pV4?feature=share

any help would be appreciated

[Jaystar77]

Hi there,

A few years back I got that weird revving on mine but I got a fault code for one of the sensors on the air intake (we're going on hazy memory here) that cleared once I cleaned it with some carb cleaner.

Probably not your issue but that revving reminded me of it.   

[ColinBarber]

Worth looking at the injectors in case they are leaking/clogged or not spraying correctly. You could start with some injector cleaner added to the petrol tank but ideally you would want to take them out and get them bench tested - and use new o-rings when you put them back because the old ones will certainly leak if you try and reuse.

[thecountryboy]

Thanks for the replies, I am still investigating, would anyone have the part number for the afr sensors, its a 2005 rx300 1mzfe

[Flairbear]

If equipped, the EGR (Exhaust Gas Recirculation) valve can sometimes malfunction and lead to rough idling and hesitation. Check to see if it's functioning correctly.