1jz idle problems

[duggy]

hey guys i got a 180sx with a 1jz fitted its running standard injectors and standard ecu atm with a t78.

originally it wasn't idling at all so i cleaned the icv and now its idling at like 2000rpm i cant work out why has any one ever heard of anything like this. is there anyway to adjust the icv.

im pretty sure its not a vacuum leak. so has any one got any ideas

[Azzamk2]

The standard ecu has probably shit itself gettin really common these days. me and a mate have gone through 2 each...crack open the ecu and look at the compacitors then find out if they are leaking ..if yes get replacement parts from a computer store and unsolder the old ones and fit the new ones. fixed me and a freinds problem.. could be the problem

[gtz20]

hi bud i had simmilar problems a few weeks ago i cleaned the idle control valve was fine for a few days done same again idle would go from 800 rpm to 3000 rpm and fluctuate very fast i ended up reseting ecu and replacing the whole idle control valve
the end of icv has a stepper motor that had seized so far i have done 3900ks and no problems since

[wilbo666]

I wouldn't be surprised to hear that it hasn't been wired up correctly...

Are you sure the ISCV has power?

Also if you don't wire the ECU correctly, that is using the M-REL output from the ECU to trigger a relay that switches +B to the ECU then the ECU won't stay on and 'close' the ISCV.

The ECU closes the ISCV on shutdown so that it knows what position it is in

http://www.toymods.net/forums/showthread.php?t=38773

Might be worth checking

Cheers
Wilbo

[duggy]

fixed it guys ISCV was sticking thanks for the help