2002 Nissan Almera • 340,000 miles

QG18 VVT, transmission shift from one to four good, but goes into lockup converter at low speed(40km). Could you tell me what could cause the problem. I have change the enginge and transmission from QG15 to QG18, also change the instrument panel
October 5, 2012.

There is a solenoid that controls the lock up time. It is based on speed and load. It can be monitored with a scan tool to verify.

I would have that checked first.

What speed does it come in? Is it the same all the time or does it varey with load?