Sc1243 Posted July 1, 2022 Report Share Posted July 1, 2022 Hi, having trigger errors on my car, engine is a 2jz using 36-2 crank wheel and 1 tooth cam sync Was running fine last season, over winter I changed to a built non vvti head using cam sensor picking up from Exh cam gear, fitted dry sump setup along with some other small upgrades. Car was running fine with no errors last seasons Just to cover a few points, I have tried cam sync off and it still shows trigger errors. At one point with the engine running and cam sync off if I plugged in a cam sensor (not fitted to engine) It made the engine cut out then wouldn’t restart until I disconnected The engine is a 2jz with standard crank vr sensor and a non vvti head so use a aftermarket cam pickup which uses another identical crank sensor to pick up from a adjustable cam gear bolt Initially I thought it was a cam sensor fault causing trigger error but obviously isn’t as with cam sync off it still does it The car has done approx 6 hours on the dyno with no issues at all, went to track and had this issue so changed crank sensor, ran on dyno for a couple of hours to confirm it was fixed and all good. Went to track yesterday and straight away had issues. Sometimes it cuts out backfires and wont start until 10-20 mins (sometimes no signal on trigger scope when cranking but sometimes there is) I have tested wiring which is all fine, tried 3 genuine sensors and checked the pickup wheel for teeth damage and all seems good. The ecu has been on the car for approx. 4 years and running without fault, the only change to the car is the non vvti head and different cam sensor setup but like I say with cam sync off it still has the issue Also iv had the loom out, double checked all the wiring, changed the ecu earth to its own post on the engine block , the coils ground separately to the cylinder head Still the same, iv attached the tune and various scopes and log files. hope this helps Thanks Tune with new arming.pclr scope with errors.llg more errors.llg log while taking scopes.llg idle scope.llg cranking scope.llg crank no start.llg 3k scope.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 1, 2022 Report Share Posted July 1, 2022 All those scopes look ok, but I suspect they just havent captured the exact moment it has occured. I would expect to see something pretty obvous in the scope with the severity of the erratic RPM in some patches of the log. Can you do a few more scope captures around the RPM or whatever it is most likely to occur at. You may have to upload to google drive or similar if you run out of upload allowance on the forum. Has trigger 1 filtering always been at level 4? Can you drop it to level 1. Quote Link to comment Share on other sites More sharing options...
Sc1243 Posted July 2, 2022 Author Report Share Posted July 2, 2022 Hi I'll do a recording on my oscilloscope and see what I can see on that. I did quite a few scope captures and they all looked fine to me Trigger 1 filtering has always been on 1 I just tried a few different settings but didn't make any difference Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 2, 2022 Report Share Posted July 2, 2022 Yep standalone scope will be good. Set it up to trigger off the cam tooth in auto mode so the crank waveform will be constantly updated but will appear static on screen Quote Link to comment Share on other sites More sharing options...
Sc1243 Posted July 2, 2022 Author Report Share Posted July 2, 2022 Standalone scope looks perfect even when the ecu is recording 30k rpm and trigger error counter is increasing With the trigger filter on 1 it only records the odd error aboke 6k with it on anything higher than 1 it gets more errors Re done engine to chassis and battery to chassis fm grounds just for good measure Also ran new sheilded cable with new pins for cam and crank sensors Quote Link to comment Share on other sites More sharing options...
duncan351 Posted January 6, 2023 Report Share Posted January 6, 2023 SC1243 did you ever figure out your trigger error problems with your 2jz? I am experiencing very similar issues you are describing. I have Changed out trigger wheel, brand new Toyota Crank sensor, put a 10K resistor, then a 20k resistor, adjusted arming voltage and filters and still getting trigger errors at high rpms. Did have a problem for almost a year then one day I start my car and make a hit and I can 't make a clean pull anymore. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 6, 2023 Report Share Posted January 6, 2023 @duncan351You would be best to start your own thread with scopes etc, unlikely related to the OP that was getting trigger errors at all RPM's, even during cranking etc. Quote Link to comment Share on other sites More sharing options...
Sc1243 Posted January 25, 2023 Author Report Share Posted January 25, 2023 On 1/6/2023 at 4:15 AM, duncan351 said: SC1243 did you ever figure out your trigger error problems with your 2jz? I am experiencing very similar issues you are describing. I have Changed out trigger wheel, brand new Toyota Crank sensor, put a 10K resistor, then a 20k resistor, adjusted arming voltage and filters and still getting trigger errors at high rpms. Did have a problem for almost a year then one day I start my car and make a hit and I can 't make a clean pull anymore. Hi, yes sorted, it was simply the air gap on the crank sensor. Wether or not there was another issue I had resolved when I was replacing other parts I don't know. The machining on the billet oil pump blank was obviously different to OEM hence the difference in air gap. Now iv closed it up the arming thresholds are much lower too Cheers Quote Link to comment Share on other sites More sharing options...
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