1z power issue

[Skull]

have you blanked the egr?

[Max M4X WW]

Approx 15k miles ago yes and I know the previous owner had replaced the valve at some point.

[Skull]

that is why you dont have so much soot.

[Max M4X WW]

Yes, but its still done 163,000 miles!

[ross b]

check the crankshaft pulley for slack, it's an 1z issue ... prepare for buying new crankshaft ...

if this was the problem, would the surging not be felt throughout the rev range, not just with high revs?

[Acidburn]

One other thing to check is on the drive by wire pedal there is a 13mm nut, if you remove the pocket under the steering wheel (4x 8mm bolts) and pull the pocket out you will see the 13mm, start the engine up and start slowly tightening it up till the revs start to increase to improve the response.