Toymods Car Club Inc: Tech & Conversions => 1jz auto comp question.

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celicamad
Forums Junkie

Location:
newcastle
Registered:
June 2002

Re: 1jz auto comp question.	Mon, 03 March 2003 09:07

sure you can try resetting the ecu .if i where you id write to your alarm manufacturer.And try to buy a key. Resetting your ecu should be a frequent thing you do . You only need to have hit the rev limiter or had bad detontation under certain load conditions and your ecu will have pulled out some timimg . EVERY time i do power runs for people with a 1j if they arent that great i tell em to reset the ecu and go again they almost always get a better power figure you only need to leave the battery disconnected for a few minutes.The computer will have cleared all codes and reverts to the factory program the fuse trick seems VERY weird indeed .with no power to it the ecu reverts to the original factory program regardless. The problem they are discusssing( in the forum link above) is the ecu hitting the rev limiter before the gear change .this problem will go away away without pullling the fuses . I think he just tried it that way and assumed it was the cure . My wifes Cressida (1jz) did the same thing yet again once the correct change down tension was set the problem went away (forever) . These guys tension the cables right up to get harder shifts which does work but there is a maximum tension level the rev limiter is a sure sign .NOTE it will only do this at FULL throttle . Also if you want a harder shift back off about 1/4 throttle JUST before a gear change an nail it again as soon as it shifts this stops the FLUTTER and soft shift .and is good for a tenth or 2 on the 1/4 mile i still feel your pointing more towards a mechanical problem.I have seen the exact same prob with a 1j with a burnt out 3rd gear clutch pack it wouldnt enagage 3rd or reverse(shared clutch pack). Funny enough the guys that have killed these auto's have fitted big coolers and never had the problem again the way you drive is not the issue its the size of the factory cooler unless you 1j is BOG stock and you live in similar weather conditions to japan you need a cooler .IF you actually measure tranny temps they are BLOODY hot .even with light driving And no!! the change down cable will not cause your problem but has casued others Particuarly when overtensioned i would suggest a quick trip to an auto trans specialist if the reset doesnt work (i doubt it will) [Report message to a moderator]

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