J4AVX

I have followed the steps and 'bypassed' the fuel pump ECU. I can hear the fuel pump but still no joy in the car starting up. I assume that the fuel pump ECU is working as its making a whining noise? Anything else i should be checking looking for?

Hi All It's me again! I think I've developed a new problem with my GS300. It doesn't start up, cranks but just doesn't tick over (could be related to previous fault where it started but cut out immediately but that's not the case now). So I replaced main ECU, no fix. Looked at the fuel pump and fuel pump ECU in the boot and might be an issue? I've put the car ignition on and then took the fuel pipe in the engine bay out and its not spitting any fuel out? I would have expected fuel to be gushing out when ignition is on which should signal the pump to come on? How can I check fuel pump ECU? Is it worth replacing? Any thoughts or ideas very much appreciated!

Thanks

Will do thanks bud

For anyone who's interested, here are some pictures of the car (Back in Summer'23).

Thanks! Very chuffed it's up and running, been driving it few days and no issues so far

Thank you!

Hi All Looking to do a full service on my 2JZ GE engine (Its a Lexus GS300 but exactly same engine as Supra NA). Can someone let me know what engine oil I need to use and how many litres? Also if someone can recommend a good brand please. Can anyone recommended where i can get all the servicing bits for this engine? Euro car parts/GSF any good for this engine? Thanks Jav

Hi All Something really odd happened today. I replaced the battery with a brand new one as old battery was completely dead and thought I'd upgrade anyway given it hasn't been replaced in a few years. I was getting car ready to replace ECU and thought lemme start up with new battery and check battery is all good, guess what! The car cranked over and started up and didn't cut out! Left it running for a while, turned off and tried again and was fine (didn't drive around though as its SORN and no MOT. So my question is (and I refuse to believe this!) could it have actually been a battery issue all along, I still think its very unlikely... Or The ECU still probs faulty and just luck that it cranked and started without cutting up Prior to this, the cars been sitting for around 8 weeks and that was the last time I tried starting but would cut out straight anway. So shall I still go ahead and replace ECU or leave as is and see if issue comes back? Car has no MOT etc so I want to get it over to the garage soon to get it done and back on road. Any advice is appreciated guys.

Thanks both! I'll give it a go over the weekend, fingers crossed it solves the problem. Will report back here

I've purchased an ECU online (the one that was on ebay). Can anyone guide me on how I can replace and check all the connectors to it? I've checked a Supra 2JZ GE engine diagram and looks like under glove box? Appreciate any help, I'm going to do a DIY job on the ECU.

Yes I've been looking at the same exact one, I've been speaking to the seller over last few days and he's willing to come down to £250 all in. I think it's a good price given ECU alone going for around £150. Deffo want to keep the car long term. Do I need to reprogramme the ECU or will it be a plug and play fitting? Thanks for the help!!

I have the error code that came up on the diagnostic - its coming up as 14 - Ignition no 1 signal. Any ideas?

The car isn't a Supra..its a Lexus GS300 1996 but the engine is the same one used in the Supra 2JZ GE. its a factory Lexus, the shared the same engine.

Thanks, that might be my next option by the sounds of advice I am getting. If I replace ECU is it a simple plug and play or does it need reprogramming? Can you let me know your price for ECU? You can DM (apologies if I am going against forum rules, happy to be corrected on rules!)