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I've Nissan Sentra 2014 1.6 cvt 170k kms [105k miles] driven. I've had an issue with cvt while accelerating from full stop, a jerking at around 20kmph which feels like clutch is disengaged for a second and then suddenly reengaged . When I took it to nissan they advised cvt fluid flush &change and luckily the issue was resolved. Now the issue I'm facing is with a slightly increased rpm. Originally at 120kmph the rpm was 2k but now it goes up to 3k to 3.5k at the same speed. Before the cruise was silent at 120kmph now there is noticeable engine noise inside the cabin. The car was always serviced with nissan but now they are recommending cvt replacement. Any advise will be highly appreciated.
 

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I've Nissan Sentra 2014 1.6 cvt 170k kms [105k miles] driven. I've had an issue with cvt while accelerating from full stop, a jerking at around 20kmph which feels like clutch is disengaged for a second and then suddenly reengaged . When I took it to nissan they advised cvt fluid flush &change and luckily the issue was resolved. Now the issue I'm facing is with a slightly increased rpm. Originally at 120kmph the rpm was 2k but now it goes up to 3k to 3.5k at the same speed. Before the cruise was silent at 120kmph now there is noticeable engine noise inside the cabin. The car was always serviced with nissan but now they are recommending cvt replacement. Any advise will be highly appreciated.
If it went 100K+ on the original fluid then the dealer is probably right, your tranny is shot. The CVT on the '14 Sentra is a dual-range type with a planetary gear set for low and high range, it sounds like yours is stuck in low causing the elevated RPM.
 

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If it went 100K+ on the original fluid then the dealer is probably right, your tranny is shot. The CVT on the '14 Sentra is a dual-range type with a planetary gear set for low and high range, it sounds like yours is stuck in low causing the elevated RPM.
Thanks for the reply. But I can feel the planetary gear shift at around 30mph. Also all the transmission fluid was changed earlier @60k miles.
 

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Ah, that's different. Then the extra RPM may be from a "limp" condition that's limiting performance. Do you happen to have a copy of the code sheet? Hard to tell exactly what's going on without a complete readout.
 

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2006 Pathfinder LE, 2003 Frontier SVE
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Sounds like the steel belt is slipping on the pulley subset, if you ask me. This usually starts with an issue of the TCM/valve body. The usual fix is to replace the CVT.
 

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Sounds like the steel belt is slipping on the pulley subset, if you ask me. This usually starts with an issue of the TCM/valve body. The usual fix is to replace the CVT.
It'll have a P1F70 in the TCM if the belt is running away, a '14 should have judder diagnostics. OP never got back to us with codes.
 

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Ah, that's different. Then the extra RPM may be from a "limp" condition that's limiting performance. Do you happen to have a copy of the code sheet? Hard to tell exactly what's going on without a complete readout.
Hi. Took it to a garage to read the codes but all clean. The mechanic suggests this could be mechanical. He checked all the fluids and topped up. suggest to drive until the CVT gives up and then replace. However after fluid topup situation improved a little. Now at 120kmph rpm stays at 3k. No loud roar of engine. Not going beyond 3k like earlier. Originally it was at 2k though.
 

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Hi. Took it to a garage to read the codes but all clean. The mechanic suggests this could be mechanical. He checked all the fluids and topped up. suggest to drive until the CVT gives up and then replace. However after fluid topup situation improved a little. Now at 120kmph rpm stays at 3k. No loud roar of engine. Not going beyond 3k like earlier. Originally it was at 2k though.
The only thing "mechanical" that could cause that is belt-slip, as Smj said. We can't get documentation on overseas models here in the 'States, so I suppose it's possible your TCM doesn't have diagnostics. If it's slipping that badly the fluid won't help for long.
 
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