JZX NZ

Hi i Have 1jz-gte when i boost and then go to slow down at lights the revs drop right down to almost stalling or it does stall. any ideas what this could be???

Converted manual? Reason I ask is that this problem has been reported over on the aussie JZX site where the car is still running the auto ECU with a manual gearbox. I have never had a problem with my car stalling since the manual conversion 6 months ago (still running auto ECU).

Have a look around the vacuum lines there may be some splits or cracks somewhere that are causing the idle control valve to get false readings. Have that on my 110 for a few days, stalling when coming to a stop thanks to a perished hose.

Atmospheric bov?

yes it is atmospheric. and will check my vacum lines

The atmospheric BOV's don't work well with the 1jzgte vvti. Because its not circulating through the j pipe system it either over fuels or under fuels when coming to a stop or even slow driving causing it to stall

I had these problems too...
auto ecu with atmo bov on r154 swapped 1jz vvti and it got worse when I removed the jpipe.

I had to raise the idle on mine to compensate for the rpm drop when you come back to idle. Otherwise if you get a tune it can fix this issue - using a safc or replacement ecu.

thanks guys really helped will be looking to get tuned soon to resolve the issue

What ecu are you going to run?

Have only just thought about it. Any one got any recommendations?? Would be much appreciated

Cheers