high idle on vvti 1jzgte

[FLAWLES]

just done a engine tranplant into my chaser

runs mint bar the 4000rpm idle.

i think its the idle up valve but am really un sure

mine seams to be jammed open i think

is this a comin thing on 1jzgte?
if not anyone got ideas?

[postfach]

On mine, the only things that ever caused this were:

Idle control valve stuck open
Vacuum leak

[FLAWLES]

how did you fix the valve? or did you replace it?

[postfach]

I replaced it twice, and they all crapped out, I ended up blanking the hole with a bit of 5mm ali and joining the hoses together.

Check your vac hoses first, the one I've had trouble with before goes to the steering rack.

[FLAWLES]

will do that

block it off aye? mmmm and it ran ok with no issues?

[strx7]

there is NO power going to the Idle solenoid stepper motor thing in the throttle body - thats if they run the same type of set up as the 1JZ and 2JZ GE pre vvti. I know when i got my surf going i had a 2500rpm idle. put power to the idle motor and it closes and then you can control it from there. Also sounds like you have a vacuum leak or the TB is jacked open.

[RomanV]

Yeah I'd say vaccum leak, I doubt the ISCV could flow enough air for a 4000rpm idle!

[rollaholic]

with the ISCV blocked it will idle okay when its warm, cold mornings will be a pain though

[postfach]

with the ISCV blocked it will idle okay when its warm, cold mornings will be a pain though

It's not as bad as you'd think, mine happily idles as soon as I start it, just have to watch it doesn't stall when you let off, but after a minute or 2 its fine. With mine, once I've made it from my driveway to the end of the road (maybe 200m) it will hold idle perfectly.

[FLAWLES]

cheers for the help

got it sorted

pulled it apart took the plunger out and sealed it up, runs fine now