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try last resort
reset dtc
with dash on, press throttle slowly 4 or 5 times
turn engine on
let it idle 5 minutes without ever touching throttle
if still not active,
start driving without stopping for a few miles or more if need to warm oil up
while driving at a point you ll need to go past at least 3500 rpm with about 40-50% throttle and then also reach 5000 rpm with second gear but with few throttle
Once at 5k rpm let the car engine-break a lot
Finally slow down and stop at idle and look at VVT Enabled value
This hardly fail, you could possibly do more tries with it
for somw reason, rebuilt engines can be doomed with slow activation of VVt
i suspect it is caused by the VVT initial values that are imprinted in the ecu by the ecu itself, maybe the alignment of cam gears and everything in the front cover and valvetrain made by the mechanic is not perfectly equal to how it was before with the old untouched oem engine
Still withing spec but a little difference that can mess with the activation at idle of the VVt just after cranking
or,
some other problems with the cam gears reactiveness, i dont know
Driving like i wrote before somewhat moves things and put favorable conditions for its activation
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