I'm finding out that the 5VZ doesn't have any timing adjustment like the old distributor or the 7MGTE engine with the crack sensor.
There's a way to adjust it with a computer but I guess normally, you don't need to do it.

 

So...you're not asking? You're just informing us of the facts?

That's all well and good, I guess. But just for the record...ignition timing doesn't need/require adjustment by a technician for any reason, ever, on a 5VZ-FE. The FSM provides no procedures for doing so. You are only instructed to inspect and/or replace faulty and/or worn ignition system components as necessary. And the ECU does the rest.

BTW, this isn't exactly a 3.4 swap question/issue.

 

I think tech on the 3.4 motor is good in this section. Its always better to know more than less about the motor you are swapping and someone could chase this when tracking down issues after a completed swap, only to find out that there is nothing to chase.

This could save someone some time in the future via searches.

 

The 5vz-fe certainly does have timing adjustment...in it's own way. The crank and cams must be at TDC when the timing belt goes on.

Also, the crank sensor, cam sensor, O2 sensor, MAF, ECU, etc. must all be connected and no vacuum leaks anywhere. If all this is good, the ECU does a wonderful job of controlling the timing and idle within spec.

 

I was thinking along those lines. I had to google this to find out.

How about idle speed? is that done by computer also? I see an adjustment screw on the throttle body similar to the 3.0..at least on the early 3.4...

 

Yes...computer controlled.