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SUPRAGTE
Forums Junkie


Location:
North Sydney
Registered:
May 2002
Re: 1jz ma61 overheating Wed, 04 December 2002 16:15 Go to previous messageGo to previous message
Man i been saying this from day one for that car, actually before the 1jz was even put in.

Get rid of that crap factory ECU. This will be most likely your overheating issue. You know how the car is running in limp mode as I told Michael as well, it reduces the ignition advance and increases the injector pulsewidths.

Engines that have a lack of ignition timing have major overheating issues as the combustion process is still occuring when the exhaust valves are opening into the exhaust manifold instead of back in the head. The massive increase in temp there causes the whole engine to become very hot through the cooling system. Correctly advanced ignition timing ensures the combustion process occurs as thoroughly as possible before the exhaust valves begin to open.

Compounding the problem is the increased fuel being injected as a result of the limp mode problem. This over fuels the engine and exaserbates the prolonged combustion process into the exhaust making it worse.

Send the factory ECU to the bin,get a manual 1jz ECU or better still get an aftermarket ECU to unlock all that extra power hidden somewhere in the 1JZ. Smile
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SubjectPosterDate
Read Message   1jz ma61 overheating dravenTue, 03 December 2002 08:50
Read Message   Re: 1jz ma61 overheating poombahTue, 03 December 2002 10:36
Read Message   Re: 1jz ma61 overheating dravenTue, 03 December 2002 13:13
Read Message   Re: 1jz ma61 overheating  SUPRAGTEWed, 04 December 2002 16:15
Read Message   Re: 1jz ma61 overheating mx83toyThu, 05 December 2002 00:30
Read Message   Re: 1jz ma61 overheating SUPRAGTEThu, 05 December 2002 01:05
Read Message   Re: 1jz ma61 overheating dravenThu, 05 December 2002 01:15
Read Message   Re: 1jz ma61 overheating mx83toyThu, 05 December 2002 02:46
Read Message   Re: 1jz ma61 overheating dravenThu, 05 December 2002 03:25
Read Message   Re: 1jz ma61 overheating gianttomatoThu, 05 December 2002 03:41
Read Message   Re: 1jz ma61 overheating ma61_turboThu, 05 December 2002 04:43
Read Message   Re: 1jz ma61 overheating ma61_turboThu, 05 December 2002 02:41
Read Message   Re: 1jz ma61 overheating ed_ma61Thu, 05 December 2002 04:03
Read Message   Re: 1jz ma61 overheating SUPRAGTEThu, 05 December 2002 05:31
Read Message   Re: 1jz ma61 overheating dravenThu, 05 December 2002 05:46
Read Message   Re: 1jz ma61 overheating NorbieThu, 05 December 2002 05:48
Read Message   Re: 1jz ma61 overheating BugmanThu, 05 December 2002 05:49
Read Message   Re: 1jz ma61 overheating zorroThu, 05 December 2002 10:43
Read Message   Re: 1jz ma61 overheating dravenThu, 05 December 2002 10:49
Read Message   Re: 1jz ma61 overheating ed_ma61Thu, 05 December 2002 13:25
Read Message   Re: 1jz ma61 overheating ed_ma61Thu, 05 December 2002 13:27
Read Message   Re: 1jz ma61 overheating dravenThu, 05 December 2002 18:39
Read Message   Re: 1jz ma61 overheating humbleFri, 06 December 2002 00:19
Read Message   Re: 1jz ma61 overheating gianttomatoFri, 06 December 2002 00:38
Read Message   Re: 1jz ma61 overheating dravenFri, 06 December 2002 04:39
Read Message   Re: 1jz ma61 overheating zorroFri, 06 December 2002 06:12
Read Message   Re: 1jz ma61 overheating SUPRAGTESat, 07 December 2002 09:42
Read Message   Re: 1jz ma61 overheating dravenSat, 07 December 2002 12:45
Read Message   Re: 1jz ma61 overheating SUPRAGTESun, 08 December 2002 09:40
Read Message   Re: 1jz ma61 overheating dravenMon, 16 December 2002 04:08
Read Message   Re: 1jz ma61 overheating SUPRAGTEMon, 16 December 2002 11:17
Read Message   Re: 1jz ma61 overheating dravenMon, 16 December 2002 12:39
Read Message   Re: 1jz ma61 overheating 5m3gheadMon, 23 December 2002 11:36
Read Message   Re: 1jz ma61 overheating dravenMon, 23 December 2002 13:15
Read Message   Re: 1jz ma61 overheating mx83toyMon, 23 December 2002 13:56
Read Message   Re: 1jz ma61 overheating dravenMon, 23 December 2002 18:46
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