Anthony Parle Posted August 15, 2020 Report Share Posted August 15, 2020 Hi Guys, Thunder wire in ECU, I have a Subaru EJ 20 DOHC but only intake with AVCS, I check fuel and spark and its all good, I set the Trigger Setup to "Subaru EJ20 Quad AVCS", but I also tried the EJ25 AVCS but no different. Anyone got any suggestions? Tony Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 15, 2020 Report Share Posted August 15, 2020 If you've got fuel and spark it would suggest it is happy with the trigger. What is the actual problem? Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 15, 2020 Author Report Share Posted August 15, 2020 It won't fire, I don't think the spark is consistent, it appears like its a bit random. I will put a scope on the crank and the power to coil tomorrow and see if it is consistent, In the trace above the cam doesn't seem to appear on the last two revolutions. Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 15, 2020 Report Share Posted August 15, 2020 The cam rotates at half crank speed, the cam teeth will only show up every second crank rev. Do you have 2 or 3 teeth on your cams? This almost looks like youve got the V7 trigger pattern, but with the hall sensors on the cam from the EJ25 or quad VVT engine? Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 15, 2020 Author Report Share Posted August 15, 2020 Not sure how to tell Adam the engine I think is out of a 2010 car, its NA, It has 3 pin sensor at the back of each head and the solenoid at the front. DOHC but only adjustable on the intake. Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 15, 2020 Report Share Posted August 15, 2020 Are you sure it doesn’t have another sensor at the front of one of the cams? Can you do a couple more trigger scopes so we can confirm there are one two cam teeth Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 15, 2020 Author Report Share Posted August 15, 2020 Its cold here for Australia, and look what happened when I tried to get a longer trace Adam. Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 15, 2020 Report Share Posted August 15, 2020 Either that sensor is failing or you have a bad connection. I suspect more likely the sensor since it seems most erratic after an edge is detected. Try swapping with the sensor on the other side. Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 15, 2020 Author Report Share Posted August 15, 2020 10 minutes ago, Adamw said: Either that sensor is failing or you have a bad connection. I suspect more likely the sensor since it seems most erratic after an edge is detected. Try swapping with the sensor on the other side. Hi Adam, I got that problem sorted it was a problem with the 12 v supply, which leads to a question, I am using solid state relays on 4 function because I use this engine for R&D into exhaust pipe using pressure transducers plotting pressure waves etc. I have the 4 relays connected to DI 11 - 14. I turn them on by pulling to ground. They are for Cam sensor 12 v, Coils 12 v, Injectors 12 V & 12V for the DBW. Would there be any issue doing it that way. Also here is a further trace after sorting supply, I can't seem to get a longer one am I doing something wrong? Will see if the car now starts in a hour or so. Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 16, 2020 Author Report Share Posted August 16, 2020 Adam I have checked the timing and its correct unless I am a full 360 degree out. When you guys say the Trigger 1 is fitted to left band, I assume the left bank is the one on the passenger side and you are not talking about it when you are in front of the car? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 16, 2020 Report Share Posted August 16, 2020 11 hours ago, Anthony Parle said: I got that problem sorted it was a problem with the 12 v supply, which leads to a question, I am using solid state relays on 4 function because I use this engine for R&D into exhaust pipe using pressure transducers plotting pressure waves etc. I have the 4 relays connected to DI 11 - 14. I turn them on by pulling to ground. They are for Cam sensor 12 v, Coils 12 v, Injectors 12 V & 12V for the DBW. Would there be any issue doing it that way. What are the relays connected to DI'2s for? So you can monitor if they are on or off? 8 hours ago, Anthony Parle said: When you guys say the Trigger 1 is fitted to left band, I assume the left bank is the one on the passenger side Well that would depend if the car is LHD or RHD. But our LH/RH terminology would refer to the drivers perspective. Its odd that you only have 2 teeth on the cam, usually the AVCS engines have 3 or 4. Im not sure if we have a trigger mode that will work with this engine. I think the V7-10 mode will get it to run with trig 2 to hall, but Im not sure if it will be happy when VVT starts to work. Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 16, 2020 Author Report Share Posted August 16, 2020 Hi Adam, I removed the plug and put a led on the injector plug and videoed it, I also checked for trigger error and it said 1. Here is a link tot he video have no idea if it will help or not. https://youtu.be/0t2nKkedILk Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 16, 2020 Author Report Share Posted August 16, 2020 Here is the ECU program in case I got something wrong in the set up. 5mpreza DOHC 200815 Ver 3.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 16, 2020 Report Share Posted August 16, 2020 Can you please try the V7-10 trigger mode like I said earlier. The EJ20 quad mode wont work because it expects 3 teeth on trigger 2. Quote Link to comment Share on other sites More sharing options...
Anthony Parle Posted August 16, 2020 Author Report Share Posted August 16, 2020 59 minutes ago, Adamw said: Can you please try the V7-10 trigger mode like I said earlier. The EJ20 quad mode wont work because it expects 3 teeth on trigger 2. Hi Adam, Sorry I misunderstood you, okay so I just gave it a try and the engine is now firing, I think I may need to get rid of the excess fuel from the past attempts and it should be good to go. I also did some checks I have a number of EJ20 NA engine with AVCS only on the intake, all have 2 slots on the intake cam. I also have a number of turbo EJ25 and they have 3 slots on the intake cam. i will discuss with Josh tomorrow at Kelfords as we have some R&D cams beng made. Thanks Adam, your service and support is the reason I buy so many Link ECU and tell everyone that you guy are the best. Quote Link to comment Share on other sites More sharing options...
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