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Danish
Forums Junkie

Registered:
March 2003

Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 10:29

Pictures of my new idle control valve modification on my 1JZ-GTE. Courtesy of Brenton at Fours N More, Adelaide. It now idles cold, and factory when warm, and idles up with the air-conditioner. This has been integrated with the MicroTech LTX12. I know there has been a lot of interest with aftermarket ECU's especially MicroTech and 1JZ's. IC Valve mod: Aircon air-idle screw, solenoid: [Updated on: Wed, 27 October 2004 10:29] [Report message to a moderator]

I supported Toymods

Location:
Perth
Registered:
May 2002

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 10:48

Does the 1JZGTE use a 4-wire ISCV like a 7M/1G? I'm most likely going to be purchasing a 4AGE 20v ISCV for when I get a Microtech down the track. I'm having trouble working out from those pictures, what exactly did they do? [Report message to a moderator]

Danish
Forums Junkie

Registered:
March 2003

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 11:07

They put an extra solenoid in conjunction with an air screw to idle up for the Aircon and cold start idle. They also removed the stock ICV valve on the 1JZ and modified a new series of hoses to work in the manifold. I will circle what they did if it isn't obvious to non 1JZ patrons. Old & New ICV devices: Aircon Idle Adjust Airscrew & Solenoid: [Updated on: Wed, 27 October 2004 11:11] [Report message to a moderator]

thechuckster
Forums Junkie

Location:
Brisbane
Registered:
February 2003

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 14:06

that looks like they've recycled the air-con idle-up hardware and ICV from a humble 5M (or similar vintage) and bolted onto some 1JZednes ... but it works, is lo-tech and parts can be sourced from many donors. [Report message to a moderator]

mrshin
Forums Junkie

Location:
Montrose, VIC
Registered:
May 2002

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 14:10

Another idea, grab a 'hose type' idle valve from an old Falcon (XE/XF EFI). That way you can have idle speed control, not just an idle up. [Report message to a moderator]

oldcorollas
Forums Junkie

Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 15:52

LOL, i DO have one of those.. it uses PWM to work it, but i haven't bothered to find out what the inputs are yet.. something like 50Hz? was trying to use a 7KE ISCV, but it's fuxored , might end up adapting the ford one for manual idle control with a PWM circuit.. Danish, looks the goods Cya, Stewart [Report message to a moderator]

Danish
Forums Junkie

Registered:
March 2003

Re: Idle Control Valve Mod - 1JZ-GTE	Wed, 27 October 2004 16:17

It will open or close if it is too cold or hot. Primary idle speed is achieved through progamming of the ECU. Some parts are Toyota/R33. Thanks oldcorollas, all credit goes to Brenton at Fours N More, he is experienced with making these for 1JZ's with MicroTech's. It is fully adjustable and performs like a factory car now. [Updated on: Wed, 27 October 2004 16:19] [Report message to a moderator]

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