ericsiewkk Posted March 5, 2019 Report Share Posted March 5, 2019 i have a problem with erratic vvt position when vvt is activated causing the car to jerk as the cam actually changes position randomly. engine is suzuki swift sport m16a vvt running with trigger mode "Suzuki Swift V2 VTC" attached is the log file suzuki vtc.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 5, 2019 Report Share Posted March 5, 2019 The cam is not moving in your log but the Inlet LH error counter is incrementing quickly. Have you done the cam angle test to confirm the trig 2 VVT offset is set correctly? Procedure below. Use a test pulse count of 6. Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 5, 2019 Author Report Share Posted March 5, 2019 if i use cam angle 92 error counter keep increasing. if i use 481 it shows no error. but both value cannot have a stable vvt position. Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 5, 2019 Author Report Share Posted March 5, 2019 here is another log with cam angle 481 suzuki vtc2.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 5, 2019 Report Share Posted March 5, 2019 Can you do a trigger scope and also attach your .pclr. Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 13, 2019 Author Report Share Posted March 13, 2019 m16a.pclr Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 15, 2019 Author Report Share Posted March 15, 2019 adam, any idea? Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 15, 2019 Report Share Posted March 15, 2019 Yes, I did have a quick look. When testing I had something odd going on that I couldnt understand either. I had to set my trigger offset 360 different to yours to get the same cam angle test results, then my cam control was erratic like yours. With my trigger offset set to 0 my VVT worked properly. So Im not sure if that means the vvt mode is set up wrong or maybe some of these engines have teeth in different locations. I havent had a chance to discuss with our engineering guys yet. Can you try this map below, I have set up the user defined VVT mode. It will only give 35deg max advance but if it works for you it will give me some good info to pass back to engineering to check where the problem is. User defined.pclr Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 15, 2019 Author Report Share Posted March 15, 2019 thanks adam will try it by tomorrow Quote Link to comment Share on other sites More sharing options...
ericsiewkk Posted March 16, 2019 Author Report Share Posted March 16, 2019 adam your map is working good vvt is stable. this the log. m16a vtc good.llg Quote Link to comment Share on other sites More sharing options...
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