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I supported Toymods
Location:
Sydney
Registered:
August 2002
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2JZ Experts
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Sun, 22 May 2005 08:19
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Calling all 2JZGTE experts..
Just finished the install of the 2JZGTE in an MX83 Cressida (see www.projectsleeper.com) and taken it for a couple of small drives (for emissions Testing, and then engineering) - both of which it passed with ease.
Trouble is, it feels very flat and almost breathless. It's got a bit of pick up off the line, but falls away and the second turbo just does not feel like it is boosting.
It doesn't fart or splutter and generally idles OK (although I suspect a injector clean and full service would improve the ocassional drop in idle it seems to suffer every now and again..
It is running the Factory Computer.
I understand it is hard to diagnose something like this via a internet description, but does any one have any suggestions as to what it may be ??
Cheers
Jason
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 2JZ Experts
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Sun, 22 May 2005 08:30
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wastgate stuck open on the second turbo??
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 2JZ Experts
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Sun, 22 May 2005 10:07
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only one wastegate on 2jz's as they are sequential.
But, I don't know sorry.
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Location:
Brisbane
Registered:
May 2002
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Re: 2JZ Experts
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Sun, 22 May 2005 10:13
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Mine did this once. It turned out to be one of the squillions of vac hoses integrated into the sequential system had popped off, so the second turbo never came online. The system as a whole is rather fragile, it doesn't take much to screw everything up.
So check all your vac hoses, and since the engine hasn't been driven in anger for a long time it might pay to check the bypass valves aren't binding.
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Location:
Brisbane
Registered:
July 2004
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Re: 2JZ Experts
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Sun, 22 May 2005 15:14
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nice to hear its running,bugs will be removed!Go the sleepa.....
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I supported Toymods
Location:
Sydney
Registered:
August 2002
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Re: 2JZ Experts
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Tue, 24 May 2005 00:15
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Thanks for the responses guys...
had Boxer from Perfromance Buildups Magazine come over last night to have a look and we checked all hoses again and they all looked fine, so he started to bypass a couple of the switches/valves/thingymejigs and whatsits (sorry for the technical terms). Taking it for a drive after each fiddle..
Holy fwuck..... We found the problem....
I am not sure exactly what this bit is called, but when it's bypassed, the poor performance problem is well and truely gone..
This thing is going to be an animal. It just wants to break traction and fry the tyres as soon as it comes on boost.. - Whilst Fun, - this is not a good thing for a daily driver that has to remain sedate and comfortable etc...
Now all I have to do is get the kickdown gearbox problem sorted and I'll be right... My model has not got a kick down Cable, but rather a wire from the ECU that went to a switch on the Aristo that was fitted under the pedal. The other wire from the switch went to ground. The switch will not fit on the cressida (different type of pedal set up) - but even when we ground this wire under WOT - it does not kick down...
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