urr Posted August 21, 2021 Report Share Posted August 21, 2021 Hi , First of all thank you for your all interests, We work on S54 engıne and upload link trigger base map to our ecu . Today we try to start up our engine but we encounter spark firing problem and injection.We did all injection tests and firing tests when we start up engine trigger signal's YES green light up but we don't see injection and firing's signals. We share our link pc log , trigger basemap , program and video to attachment. Best Regards , WhatsApp Video 2021-08-21 at 19.17.20.mp4 bmw s54.pclx log.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 21, 2021 Report Share Posted August 21, 2021 Your crank sensor polarity is wrong, swap the +/- wires are the crank sensor. Quote Link to comment Share on other sites More sharing options...
urr Posted August 22, 2021 Author Report Share Posted August 22, 2021 Hi Adamw Thank you for giving us feedback. We tried the solution you suggested , but stil encountered the same problem.Is there any other solution we can try ? best regards Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 22, 2021 Report Share Posted August 22, 2021 Please do a new trigger scope and a log of it cranking. Quote Link to comment Share on other sites More sharing options...
urr Posted August 23, 2021 Author Report Share Posted August 23, 2021 new trigger scope log (2).llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2021 Report Share Posted August 23, 2021 Your trigger scope still shows the incorrect polarity. The correct waveform should rise to the right through the missing tooth area then fall sharply after the gap similar to my pink line drawing. Quote Link to comment Share on other sites More sharing options...
urr Posted August 23, 2021 Author Report Share Posted August 23, 2021 Hi Adamw I share our pinouts of the crank and camshaft sensor's sockets to attachment so according to the information you shared with us, we think that we have done wrong wiring somewhere, but we don't have a wiring diagram for the s54 crank and camshaft sensors. Would you share with us if there is a wiring diagram for these sensors ? In the picture I shared, our wiring is as follows ; CRANK SENSOR Yellow - signal Black - GRND CAMSHAFT POSITION SENSOR Red - 12v White - signal Brown - GRND Many thanks for your help in advance , BEST REGARDS Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2021 Report Share Posted August 23, 2021 You cam signal looks fine. For the crank sensor, yellow is ground, black is signal/trig 1. Quote Link to comment Share on other sites More sharing options...
urr Posted August 23, 2021 Author Report Share Posted August 23, 2021 We made the wiring change you recommended on the crank sensor. But the ignition is stable when starting the engine, then it becomes irregular.We tried to change the trigger erming threshold, but we still couldn't find a solution. I added the new scope and pc log to the attachment. We see the problem you mentioned in the scope graph again. Best Regards. TriggerScopeLog 09.llgx PC Datalog - 2021-08-23 11;59;54 am.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2021 Report Share Posted August 23, 2021 trigger looks good now and rpm and dwell is stable in the log. What do you mean by "But the ignition is stable when starting the engine, then it becomes irregular"? Have you fitted ignitors to drive the coils? Quote Link to comment Share on other sites More sharing options...
urr Posted August 23, 2021 Author Report Share Posted August 23, 2021 we don't need ignition module because our coils are audi bosch r8 coils. Another thing we suspect is that the trigger offset on the s54 basemap is locked at 274 degrees. Could it be related to the advance calibration ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 23, 2021 Report Share Posted August 23, 2021 You need to check the trigger offset with a timing light. But usually the S54 is around 274-276 in my experience. 10 hours ago, Adamw said: What do you mean by "But the ignition is stable when starting the engine, then it becomes irregular"? Please give us a log of the engine running with "unstable ignition" Quote Link to comment Share on other sites More sharing options...
urr Posted August 25, 2021 Author Report Share Posted August 25, 2021 Hi Adamw Sorry for the late response , We started our engine but there is a situation like this ; While starting our s54 engine, we had this problem with the base trigger setup given by the link for the s54engine . We entered our own custom trigger arming threshold and trigger setup started cranking. We already know that we have to set it ourselves, but isn't it more correct to run it with the base trigger setup of the link ecu? I am sharing the log and scopes before and after starting the engine in the attachment.We would be very happy if you could check and get back to us. Thank you for your all interest , Best Regards. triger scope start.download s54 start.pclx triger scope engine run.llgx s 54 log.llgx Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 25, 2021 Report Share Posted August 25, 2021 Multitooth/missing trigger mode will not start reliably with no sync. Are you saying the engine will not run with the correct S54 trigger mode? Quote Link to comment Share on other sites More sharing options...
urr Posted August 26, 2021 Author Report Share Posted August 26, 2021 hi Adamw We set the sync and made the engine running with our own trigger setup but what we really wonder, we couldn't trigger the advance gun and we couldnt make the engine runnig with the base trigger setup given by the link for the s54 engine . Now we can running the engine with our own custom trigger setup.We just want to make sure we have the right setup.I am sharing the base trigger setup and my own custom trigger setup scopes in the attacment I also added custom trigger offset BTDC advance setting.Would you check the custom setups I shared? and Do you have any suggestions to improve the setup? We want to make sure we are in the correct trigger setup for the s54. Thank you for your all interests. Best Regards. TriggerScopeLog s54 link base.llgx TriggerScopeLog custom link.llgx custom tdc.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted August 26, 2021 Report Share Posted August 26, 2021 Looking at that trigger mode it looks like you should be using cam pulse window on trigger 2 as there are multiple pulses on trigger 2 in both halves of the engine cycle. Maybe try this setup Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 26, 2021 Report Share Posted August 26, 2021 As Vaughan says your existing sync set up is not suitable, it may work ok with the cam pulse window depending one whether the cam was fully advanced or fully retarded when you done the scope. Your cam looks about 50deg retarded compared to the expected position. I know of several other S54 engines running the S54 trigger mode with G4X successfully. Can you tell us what the problem was when you tried the S54 mode. Quote Link to comment Share on other sites More sharing options...
urr Posted August 28, 2021 Author Report Share Posted August 28, 2021 Hi Adamw We tried to run engine with the trigger mode that the linkecu gave for the s54 engine and the engine didnt running, then we enter our own custom tigger mode and start the engine and it s running . We shot a video step by step. You can download it from the link below. The size of the video is large so I am sending it with the wetransfer link. We also tried the setup suggested by Vaughan, but it didn't work. We will be glad if you watch and check the video. Thank you for your all interests. Video link; https://we.tl/t-dhxYTzUAVC Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 28, 2021 Report Share Posted August 28, 2021 Offset should be 0 for the S54 triggermode. Quote Link to comment Share on other sites More sharing options...
urr Posted August 30, 2021 Author Report Share Posted August 30, 2021 Hi Adamw As you suggested, we started the engine in the base s54 triggermode of the Link ecu by making the offset 0 zero.We checked with timing light, there seems to be no problem.We have another important problem. As you can see in the video before, we are running our S54 with ITB and the e-throttle is constantly giving an error. We get the Max % DC limit (code 70 error) and fault code 84 error. Throttle works but when it draws high amperage we get this error. Shall we give up ITB and switch to single body? does this solve the problem? Does Link ecu have base setup for s54 oem ethrottle? We would be very happy if you could make a recommendation. Thanks a lot for your help Best Regards Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 30, 2021 Report Share Posted August 30, 2021 You should be able to get the ITB's working, I have done a few but all on G4+ ecu's so the throttle settings wont be much good. The main problem is the vacuum pulls the throttles shut very hard and it takes a lot of amps to get them to initially open. What I do is run very retarded ignition timing at idle ~0deg, so that the throttle idle position needs to be open more to achieve the correct speed, this seems to make them easier to move. I have heard some customers have had to remove some of the throttle return springs (i think they have 1 per throttle), but I personally havent had to do that. Quote Link to comment Share on other sites More sharing options...
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