Toymods Car Club Inc: Tech & Conversions => JZA70 Supra (1JZ-GTE) Major Problems

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poombah
Regular

Location:
Forrestfield, WA
Registered:
August 2002

JZA70 Supra (1JZ-GTE) Major Problems	Sun, 25 August 2002 09:39

One huge major problem with this car that has been going on for six months or so. It just randomly dies. Driving along, engine just shuts off, wont even crank over to restart. No Check Engine light, no indication of a problem. Over the last couple of months we've gone over everything from it being the Alarm System, Fuel regulator, Battery, Power leads, Fuel Pump (just been replaced), fuel lines, wiring looms.. everything. It stopped doing it for about a month... for no particular reason then just started again. We wired up a secondary ignition circuit with a push button to start it so when it dies completely and wont crank, we can force it to crank over and eventually by switching power on and off it seems to right itself and go. The problem is totally random, ie it can happen cold... hot... when the car is idling at the lights, when im doing 100km/h down the freeway, it just dies.. full stop. Im down to the point where it pretty much HAS to be either the ECU is faulty, or something sensor related.. (ie crank angle sensor or something crazy i was told). Pretty much I just need a suggestion or something or advice from anyone who has had the same or similar problem. Ive spoken to most of the import people around and they're all scratching their heads. Ive done everything that people have recommended like changing regulators and all that sorta thing but I'm pretty sure its an electrical problem. Ive got an Apexi S-AFC on order that should arrive this week sometime, I'm gonna fit it up and see if i can get any info out of it when the problem occurs as it monitors like boost and vacuum pressure and all sorts of stuff apparently. The fuel pump I fitted was a HUGE mother - Bosch 975 which is supposedly good for up to 600hp I've been told, and considering the only engine mods I've got are 3" zorst from turbo to tip and pod filter this should do the job. Apart from that when the car runs its runs PERFECTLY, no other problems whatsoever... but this problem makes the car totally unreliable as it can run fine for 2-3 days then one day sitting in traffic it just carks it and wont start. So i use the manual starter switch we wired up to crank the car over, but it just refuses to fire, or starts then dies straight away. Help me obiwan kenobi.. you're my only hope.. - Russ [Report message to a moderator]

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