when i brake after going around 50mph the engine or the transmission i dont know which one slightly thuds and goes back to the normal idle...is this normal? it is very slight but definitely there...it will get stuck just above 1k rpm and then thud and then go under its not smooth

 

so what exactly does the idle do when you brake? does it shoot up?

 

it shoots up slightly...very minor though. I read further into this and some people are saying an engine knock when coming to an stop and it describes my situation perfectly. when i am coming to a stop the engine knocks

 

so it feels like maybe weak engine or transmission mounts?

 

mines is at 52k miles 2013 nissan maxima...would i be able to just take it to the nissan dealership and have them take a look at it?? it was a prior rental just got it a week ago from hertz

 

Doesn't sound normal. Check the transmission fluid. It may need to be changed. Dealer may charge you to take a look at it, but call and ask and provide them a VIN.

 

Definitely not normal....as stated...it's worth getting it checked.

 

as said i would let the dealer check it incase its trans related

 

ok so after a few trips to a dealer and asking my friend i think its just me getting used the cvt...the rpm needs stays put around 1k rpm when i am coming to a stop and then drops to normal when i am completely stopped i dont know if that is normal or not but my friend says it is just the cvt

 

I get a bit of a click (almost like the sound of a car doors locking from when you are onthe outside) around 40km/h on accelerate I was told there was a bit of a engine check that happens -- its a little annoying but you will get used to it,

Not sure if that is the same thud -- there is also a bit of an engine brake on the CVT's could the two be related?

Are you coming from a car that had a regular transmission?

 

When I first got my 2010 I recall a few times when stopped or just about stopped, the car would lurch as if I had been hit by the guy behind me. With some experimenting it appears that I was not pressing on the brake enough. With just a lite pressure on the petal the car would sometimes seem to "lurch" or"thud", just applying a little more pressure on the brake pedal eliminated the sudden thud or lurch.

 

The torque converter locks at 19 mph that you will feel when you come to a stop. Car does have engine braking in regular D and more aggressive engine braking in Ds mode, but it should not have an audible or heavy thump at 50 mph.