Better With Synchro-Rev Off?

juld0zer · 01-18-2015, 09:03 AM

sorry to jumpstart this thread again but ever since i got my Z, the SRM doesnt feel anywhere as near as accurate as in the brand new demo cars i drove in the lead up to buyin mine second hand.

If any of you are keen for a little diy tinkering, let me know and ill give more details so we can collect some data here.
My thoughts are:
- Auto transmissions rely on input and output speed sensors to calculate a smooth shift
- Input sensor in our transmission would be the crank angle sensor
- Output speed sensor in our transmission is the one on the left side of the tail end
- If one of these sensors is not sending the right signal in a car with auto trans, sloppy shifts occur.
- My finger has been pointing at the output speed sensor for a while but cost and lack of availability here has put me off buying one and swapping it out.
- There is no SRM diagnostic and no SRM specific DTC so even if this sensor were to fail, all you'd get is S-mode error displayed on the cluster, afaik anyway. If any Nissan gurus have other info, that would be awesome. Maybe Consult has a menu for SRM?
- This is why i rule out my crank sensor because it has never spat a code for it, and the engine runs fine

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01-18-2015, 09:03 AM	#1 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 139	sorry to jumpstart this thread again but ever since i got my Z, the SRM doesnt feel anywhere as near as accurate as in the brand new demo cars i drove in the lead up to buyin mine second hand. If any of you are keen for a little diy tinkering, let me know and ill give more details so we can collect some data here. My thoughts are: - Auto transmissions rely on input and output speed sensors to calculate a smooth shift - Input sensor in our transmission would be the crank angle sensor - Output speed sensor in our transmission is the one on the left side of the tail end - If one of these sensors is not sending the right signal in a car with auto trans, sloppy shifts occur. - My finger has been pointing at the output speed sensor for a while but cost and lack of availability here has put me off buying one and swapping it out. - There is no SRM diagnostic and no SRM specific DTC so even if this sensor were to fail, all you'd get is S-mode error displayed on the cluster, afaik anyway. If any Nissan gurus have other info, that would be awesome. Maybe Consult has a menu for SRM? - This is why i rule out my crank sensor because it has never spat a code for it, and the engine runs fine