tephanie Posted March 12, 2017 Share Posted March 12, 2017 i recently had my entire engine andt ranny out for a re build of the bottom end of my 93 jdm auto non vvti supra. However the engine was restalled the car started and soon the ecu blew....not the fuse the ECU not stressing cause i know these stock ECU are over 20 years.. i bought another one the car started and drove perfectly for 280 kms...then it blew again.....again not the ecu fuse but the actual ECU I checked the grounds they all look good.. any suggestions Quote Link to comment Share on other sites More sharing options...
fastcar Posted March 12, 2017 Share Posted March 12, 2017 Have you actually checked the grounds properly with a multi meter? Sounds like the power is spiking and blowing the ECU. Bad earth connection or power supply split cables! Really need to check the resistance with a multi meter to rule the wires out Quote Link to comment Share on other sites More sharing options...
evinX Posted March 13, 2017 Share Posted March 13, 2017 I have a mechanic in trinidad who knows his supras if you want me to put you in contact with him? Hes had loads of 1jz and 2jz powered cars and supras to Quote Link to comment Share on other sites More sharing options...
tephanie Posted March 13, 2017 Author Share Posted March 13, 2017 will dothat let u know what happens Quote Link to comment Share on other sites More sharing options...
tephanie Posted August 30, 2017 Author Share Posted August 30, 2017 I have a mechanic in trinidad who knows his supras if you want me to put you in contact with him? Hes had loads of 1jz and 2jz powered cars and supras to which mech u talkin about Quote Link to comment Share on other sites More sharing options...
evinX Posted August 30, 2017 Share Posted August 30, 2017 Shazaan autoperformance ali. Hes had 1jz mkiiis, 2jz big single cressida, 2jz tt mkiv supra. Hes been into them long before me. 10years plus. Fb him youll find him. From Tunapuna Quote Link to comment Share on other sites More sharing options...
jagman Posted August 31, 2017 Share Posted August 31, 2017 First , you need to inspect both ECU s - did they "blow" in the same place on the circuit cards , this can narrow down the output wires , the fault is most likely in the engine loom/gearbox loom - short circuit , maybe a plug backwards or wire trapped . Then , with the wiring diagrams , megga each pin on the ECU connector , this will show the faulty wire , this can be done with a stabilised power supply , set to 12v , it will show large current draw on a wire where it should not draw much . Then inspect that wire and loom run to its final connection , sensor or whatever , disconnect the load , sensor or whatever and check again . Now it's known if it is sensor or wire , repair wire as necessary . As it ran 280 km , it's an intermittent fault and probably a wire chaffed , so around steering, wheels, shocks , fans , and grommets and clamps . Could be as easy as a 2 pin connector forced on backwards or with a broken clip - Only about 80 or so pins to check Quote Link to comment Share on other sites More sharing options...
tephanie Posted January 19, 2018 Author Share Posted January 19, 2018 hey guys ...it ended up being a coilpack connector wired the wrong way around...problem solved now Quote Link to comment Share on other sites More sharing options...
evinX Posted January 19, 2018 Share Posted January 19, 2018 Any pictures of the car? My friend recently purchased a red tt 6 speed hardtop in Trinidad Quote Link to comment Share on other sites More sharing options...
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