S.Masaru Posted July 17 Report Share Posted July 17 Thank you for your help. Sometimes the rotation speed drops while idling. I'm not sure if this is a problem with the engine or the ECU settings, so I'm having trouble. I'd appreciate some good advice. https://drive.google.com/file/d/1vXejK6h-EFHMfiVONhG8UKtcZlxXIHj6/view?usp=sharing https://drive.google.com/file/d/1UlD5GINskKVrI_hMJ6KGNfQ46CDg4LuX/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 17 Report Share Posted July 17 This is due to a trigger error, if the ecu receives an unexpected signal from the trigger sensors then it no longer knows crank position, so it disables spark and fuel for a short time until crank position has been re-synced. TTP 1 Quote Link to comment Share on other sites More sharing options...
S.Masaru Posted July 17 Author Report Share Posted July 17 Thank you. I'll look into it right away. Quote Link to comment Share on other sites More sharing options...
S.Masaru Posted July 18 Author Report Share Posted July 18 Thank you for your assistance. I replaced the crank sensors with spare ones I had and took a log. The idle target RPMs have still not been reached, but the drop in RPMs like last time seems to have gone away. It would be helpful if you could point out any problems you notice from the log. Thank you in advance. https://drive.google.com/file/d/1b3iuwhgTdQ_8o_rI5ZfXpJ_Tr_tEnHy3/view?usp=sharing https://drive.google.com/file/d/1vXejK6h-EFHMfiVONhG8UKtcZlxXIHj6/view?usp=sharing Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 18 Report Share Posted July 18 Your manifold pressure at idle is just kissing the MAP lockout for the idle control, so idle control is constantly bouncing on/off. Increase the MAP lockout to 100Kpa, and you will probably get better control by switching to closed loop mode also. Quote Link to comment Share on other sites More sharing options...
S.Masaru Posted July 18 Author Report Share Posted July 18 Thank you for your detailed explanation. I'll try it out tomorrow. Quote Link to comment Share on other sites More sharing options...
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