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2012 Infiniti M56 - Torque Converter Going?
2 years 6 months ago - 2 years 6 months ago #51940
by Shanehsmp
2012 Infiniti M56 - Torque Converter Going? was created by Shanehsmp
Car:
2012 Infiniti M56, about 60k miles, Original plugs, always premium 91 or better.
5.6L V8 VK56VD engine (Direct Injection) 7 Speed Automatic Transimission.
My car has been doing a weird low speed 45mph/5th gear and under bogging. On decel, my timing retards all the way down to -7° and the effect is a very noticeable "brake". It only does this after engine temps have warmed up, if I drive at a cooler temp, it decels normally, no aggressive engine brake and timing isn't retarded. Also, from a stop, the car will shudder from 1st to 2nd to 3rd.
I decided to log my transmission because, specifically my torque converter speed slip - it should be very close to Engine RPM however, I am getting values of 65000 RPM and this is after verifying with two different scanners. Below is what my 2nd scanner is showing me.
Any thoughts - I have been trying to figure this out forever, finally think I am there....just need some confirmation.
2012 Infiniti M56, about 60k miles, Original plugs, always premium 91 or better.
5.6L V8 VK56VD engine (Direct Injection) 7 Speed Automatic Transimission.
My car has been doing a weird low speed 45mph/5th gear and under bogging. On decel, my timing retards all the way down to -7° and the effect is a very noticeable "brake". It only does this after engine temps have warmed up, if I drive at a cooler temp, it decels normally, no aggressive engine brake and timing isn't retarded. Also, from a stop, the car will shudder from 1st to 2nd to 3rd.
I decided to log my transmission because, specifically my torque converter speed slip - it should be very close to Engine RPM however, I am getting values of 65000 RPM and this is after verifying with two different scanners. Below is what my 2nd scanner is showing me.
Any thoughts - I have been trying to figure this out forever, finally think I am there....just need some confirmation.
Last edit: 2 years 6 months ago by Shanehsmp.
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