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ke382TG
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Registered:
May 2002

Re: Boost issues with 4AGZE

Fri, 24 June 2005 02:00

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If it is an ECU problem it will be due most likely to a dud sensor. As the factory ECU has been run in many 4AGTE setups now which see 14.5 - 15 psi without any problems. But your description of your setup and the problem would not indicate an ECU problem.

The only way the factory ECU on the ZE could decrease boost like that is by bleeding off massive volumes of boost (not likely, especially given you have removed the bypass valve) or by disengaing the supercharger clutch (even less likely as once it is disengaged you would only see 0psi or vaccuum). Given that the superchager is mechanically driven and will produce boost/rpm regardless of what the ECU does to fuel and timing I would not think it's an ECU problem.

Eliminate possible problems one by one:

Superchager has correct volume of oil and is in good mechanical order?

Belt is tight and grippy (apply some spray on belt grip just to be sure as that belt is turning a significant load and only needs to slip a bit to lose boost)

Check all hoses and pipe connections are tight and not leaking (I am sure this has been checked and double checked)

I still think it will be a mechanical issue or leakage. I am happy to be wrong though when you eventually work it out.

Good luck, let us know what the outcome is.

Edit:

Quote:

Does anyone on this bloody forum actually know anything about Toyota ECU's?

Getting angry at forum members will make them less likely to contribute (most of the really cluey ECU people have not even contributed yet, maybe they won't now?). At the end of the day if you can't figure it out put your hand in your pocket and pull out some money to pay a professional to diagnose the problem, my bet is 10 minutes on a dyno would have this diagnosed. Rolling Eyes

Rolling Eyes

[Updated on: Fri, 24 June 2005 02:07]

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Read Message Boost issues with 4AGZE Irish Thu, 23 June 2005 03:22
Re: Boost issues with 4AGZE CrUZsida Thu, 23 June 2005 03:28
Re: Boost issues with 4AGZE Irish Thu, 23 June 2005 03:36
Re: Boost issues with 4AGZE CrUZsida Thu, 23 June 2005 03:38
Re: Boost issues with 4AGZE 4agte Thu, 23 June 2005 04:47
Read Message Re: Boost issues with 4AGZE Irish Thu, 23 June 2005 04:53
Re: Boost issues with 4AGZE 4agte Thu, 23 June 2005 05:02
Re: Boost issues with 4AGZE ke382TG Thu, 23 June 2005 05:03
Re: Boost issues with 4AGZE Irish Thu, 23 June 2005 05:13
Re: Boost issues with 4AGZE ke382TG Thu, 23 June 2005 05:31
Read Message Re: Boost issues with 4AGZE 4agte Thu, 23 June 2005 05:50
Re: Boost issues with 4AGZE Muzza053 Thu, 23 June 2005 06:49
Re: Boost issues with 4AGZE Irish Thu, 23 June 2005 08:00
Re: Boost issues with 4AGZE 4agte Thu, 23 June 2005 14:25
Re: Boost issues with 4AGZE Muzza053 Thu, 23 June 2005 08:51
Read Message Re: Boost issues with 4AGZE Irish Thu, 23 June 2005 12:52
Re: Boost issues with 4AGZE Irish Fri, 24 June 2005 01:41
Re: Boost issues with 4AGZE ke382TG Fri, 24 June 2005 02:00
Re: Boost issues with 4AGZE Adsport Fri, 24 June 2005 04:44
Re: Boost issues with 4AGZE feral4mr2 Fri, 24 June 2005 12:45
Read Message Re: Boost issues with 4AGZE Adsport Fri, 24 June 2005 13:41
Re: Boost issues with 4AGZE feral4mr2 Fri, 24 June 2005 22:35
Re: Boost issues with 4AGZE Adsport Wed, 29 June 2005 07:51
Re: Boost issues with 4AGZE Irish Sun, 03 July 2005 06:25
Re: Boost issues with 4AGZE Adsport Sun, 03 July 2005 10:30
Read Message Re: Boost issues with 4AGZE Irish Sun, 03 July 2005 23:02
Re: Boost issues with 4AGZE THE WITZL Mon, 04 July 2005 04:08
Re: Boost issues with 4AGZE toof Sun, 03 July 2005 23:31
Re: Boost issues with 4AGZE Irish Mon, 04 July 2005 06:51
Re: Boost issues with 4AGZE toof Mon, 04 July 2005 10:05
Read Message Re: Boost issues with 4AGZE feral4mr2 Mon, 04 July 2005 11:17
Re: Boost issues with 4AGZE Irish Mon, 04 July 2005 22:46
Re: Boost issues with 4AGZE toof Tue, 05 July 2005 13:06
Re: Boost issues with 4AGZE THE WITZL Mon, 04 July 2005 12:11
Re: Boost issues with 4AGZE THE WITZL Mon, 04 July 2005 12:16
Read Message Re: Boost issues with 4AGZE feral4mr2 Mon, 04 July 2005 13:59
Re: Boost issues with 4AGZE Adsport Mon, 04 July 2005 14:35
Re: Boost issues with 4AGZE bayka Mon, 04 July 2005 16:40
Re: Boost issues with 4AGZE Adsport Tue, 05 July 2005 12:33
Re: Boost issues with 4AGZE Irish Mon, 04 July 2005 22:59
Read Message Re: Boost issues with 4AGZE nick.parker Tue, 05 July 2005 05:14
Re: Boost issues with 4AGZE Irish Tue, 05 July 2005 05:46
Re: Boost issues with 4AGZE Irish Tue, 05 July 2005 06:06
Re: Boost issues with 4AGZE nick.parker Tue, 05 July 2005 06:23
Re: Boost issues with 4AGZE Irish Tue, 05 July 2005 06:26
Read Message Re: Boost issues with 4AGZE bayka Tue, 05 July 2005 17:00
Re: Boost issues with 4AGZE Adsport Wed, 06 July 2005 05:33
Re: Boost issues with 4AGZE toof Tue, 05 July 2005 22:28
Re: Boost issues with 4AGZE Irish Wed, 06 July 2005 01:38
Re: Boost issues with 4AGZE toof Thu, 07 July 2005 08:15
Read Message Re: Boost issues with 4AGZE feral4mr2 Sat, 09 July 2005 21:06
Re: Boost issues with 4AGZE Irish Fri, 08 July 2005 01:11
Re: Boost issues with 4AGZE ke382TG Fri, 08 July 2005 01:34
Re: Boost issues with 4AGZE toof Fri, 08 July 2005 02:17
Re: Boost issues with 4AGZE ke382TG Fri, 08 July 2005 02:39
Read Message Re: Boost issues with 4AGZE toof Fri, 08 July 2005 02:50
Re: Boost issues with 4AGZE Ben Wilson Fri, 08 July 2005 03:31
Re: Boost issues with 4AGZE nick.parker Sat, 09 July 2005 14:02
Re: Boost issues with 4AGZE Ben Wilson Sun, 10 July 2005 22:30
Re: Boost issues with 4AGZE Adsport Sun, 10 July 2005 09:46
Read Message Re: Boost issues with 4AGZE feral4mr2 Sun, 10 July 2005 10:27
Re: Boost issues with 4AGZE raaf86 Wed, 10 August 2005 13:44
Re: Boost issues with 4AGZE Adsport Thu, 11 August 2005 12:20
Re: Boost issues with 4AGZE Matt-AE86 Sun, 10 July 2005 16:54
Re: Boost issues with 4AGZE toof Mon, 11 July 2005 00:32
Read Message Re: Boost issues with 4AGZE Ben Wilson Mon, 11 July 2005 01:05
Re: Boost issues with 4AGZE toof Mon, 11 July 2005 02:05
Re: Boost issues with 4AGZE Irish Thu, 28 July 2005 00:02
Re: Boost issues with 4AGZE feral4mr2 Thu, 28 July 2005 10:18
Re: Boost issues with 4AGZE Skein Thu, 28 July 2005 13:58
Read Message Re: Boost issues with 4AGZE BradW Fri, 29 July 2005 10:51
Re: Boost issues with 4AGZE Adsport Mon, 01 August 2005 02:23
Re: Boost issues with 4AGZE Irish Tue, 02 August 2005 08:56
Re: Boost issues with 4AGZE Adsport Wed, 03 August 2005 01:19
Re: Boost issues with 4AGZE Irish Wed, 03 August 2005 03:43
Read Message Re: Boost issues with 4AGZE toof Wed, 03 August 2005 05:58
Re: Boost issues with 4AGZE Adsport Wed, 10 August 2005 12:07
Re: Boost issues with 4AGZE oldcorollas Fri, 12 August 2005 11:55
Re: Boost issues with 4AGZE toof Thu, 11 August 2005 05:13
Re: Boost issues with 4AGZE toof Thu, 11 August 2005 06:10
Read Message Re: Boost issues with 4AGZE Adsport Thu, 11 August 2005 12:32
Re: Boost issues with 4AGZE toof Fri, 12 August 2005 10:47
Re: Boost issues with 4AGZE Adsport Fri, 12 August 2005 12:08
Re: Boost issues with 4AGZE Irish Fri, 12 August 2005 10:56
Re: Boost issues with 4AGZE toof Fri, 12 August 2005 11:30
Read Message Re: Boost issues with 4AGZE Irish Fri, 12 August 2005 13:20
Re: Boost issues with 4AGZE oldcorollas Fri, 12 August 2005 14:20
Re: Boost issues with 4AGZE Irish Fri, 12 August 2005 14:43
Re: Boost issues with 4AGZE oldcorollas Fri, 12 August 2005 16:05
Read Message Re: Boost issues with 4AGZE gearb0x Sat, 13 August 2005 02:54
Re: Boost issues with 4AGZE Irish Fri, 12 August 2005 14:47
Re: Boost issues with 4AGZE toof Sat, 13 August 2005 10:45
Re: Boost issues with 4AGZE Adsport Sat, 13 August 2005 11:34
Re: Boost issues with 4AGZE oldcorollas Sat, 13 August 2005 11:58
Read Message Re: Boost issues with 4AGZE Adsport Sat, 13 August 2005 12:07
Re: Boost issues with 4AGZE toof Thu, 18 August 2005 06:36
Re: Boost issues with 4AGZE Adsport Thu, 18 August 2005 09:45
Re: Boost issues with 4AGZE Irish Sat, 20 August 2005 13:20
Re: Boost issues with 4AGZE Irish Sat, 20 August 2005 13:21
Read Message Re: Boost issues with 4AGZE Adsport Sun, 21 August 2005 04:53
Re: Boost issues with 4AGZE toof Sun, 21 August 2005 10:23
Re: Boost issues with 4AGZE Irish Sun, 21 August 2005 10:25

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