Strange problem with Corolla Altis Grande

[ussi]

Assalamu Alaekum

Fellow members,
I have just bought a grande which has 42k on the odo genuine mileage
Now I'm facing 2 3 issue with it

1. The steering feels a bit hard. I also visited the dealership but they said its normal. Made me check 2 other cars and the steering was same. Thought he said that your axel have a bit water in them they need to be greased again so i got it done
   Now there is a slight vibration between 30 to 40km/h

2. The car doesn't run smooth on low rpms. As soon as lift up my foor from the pedal at 30 or 40 the car slows down so quickly it feels like someone is applying brakes or stopping the car and when it reaches 10kmh it frees itself back.
   The vehicle till 20 or 30 doesn't runs smooth it feels like its still in the 1st gear

3. Whenever i leave the throttle and press it again even a slight press makes a bit of jerk and clicking sound
   On depressing the throttle it again feels like a jerk and makes that clicking sound which sometimes turns into KRR KRR noise.

4. It makes the same click sound while putting the car in D and R
   Also the gear lever while shifting from D to N seems hard and a bit stuck

I don't know if all these problem are related to each other or not
The car is in warranty
Have gotten 40k km inspection done
Brake pads were also changed as they were near to end so i didn't wanted to damage the discs
I will again visit the dealership because these issues are not good for a new car

Can anyone please shed some light on this if they have faced this issue
Expert opinion needed!

Thanks!

[JunaidDogar]

Indications are related to CVT gear behavior.
When was the CVT gear oil changed.

[ussi]

Brother its not changed
Its 42k driven 2020 model
Dealership guys said it will be changed at 80k kms
@JunaidDogar

[JunaidDogar]

Recommended oil change interval for CVT is 40K kms, you can check car's manual.

Vibration started after greasing of axles?

[ussi]

[ussi]

Yes vibration started after greasing axels
Before i didn't feel any vibration

[haseeb.basharat]

Not a cvt related issue.

You have a damage cv joints mainly known as inner axles. Once you replace them problem will be resolved. Vibration will also show up at high speed too. Cost of new cv joints pair is 36000 and that was in June.
Cvt oil change interval is 55000kms or 2 years whichever comes first.

[ussi]

Cv joints already gone at 40?
What about other problems?
Also when i floor the car a bit and then leave the throttle the rpm gets stuck and its high reving like its in sports mode
What is causing that?

[ussi]

@haseeb.basharat
Bro also there was no vibration before they greased the cv joints

[ussi]

@Xulfiqar

[haseeb.basharat]

Cv joints already gone at 40?

In order to take out old boots they would have unlocked complete axle. They dismantle inner cv joint with the help of hammer. Now that's malpractice, and hammer bends up that tripod bearing inside the cv joint. It's on the dealership, if the work was performed recently then you can go and claim it. Tell them that you guys have bent tripod bearing by hammering it out, and now I have vibrations (claim it) my axle is ruined by you guys. Other problems are related to that as well because your cv joints are loose now.

Also when i floor the car a bit and then leave the throttle the rpm gets stuck and its high reving like its in sports mode

That's normal in k313 cvt, the ecu keeps on thinking for a while that you need more power and keeps the rpm high for a while, it will drop back to normal within 5 seconds once you start driving economically.

Bro also there was no vibration before they greased the cv joints

Because your cv joints were not hammered out.
In order to change boots hammer on cv joint to dismantle it is the best malpractice in Pakistan. You can change complete cv joint or just a tripod bearing if you're able to find it somehow.

Everyone will say that it's a problem of gear, but nope. Been there and resolved that issue after banging my head here and there.

[JunaidDogar]

Claim the axles in warranty, they have messed up with the axles during repair.

[ussi]

Sir the boots were not replaced
They only greased the axles
I think they didn't remove the axels as the car was ready in a short period of time
Maybe they have greased them while they were on the car

Tomorrow visiting them again for the problem

[haseeb.basharat]

In order to grease you have to remove axles.

[Xulfiqar]

I have also once seen a Honda dealership in Karachi do a grease job on an installed axle, by just unclipping their boots - shooting them with petrol and refilling them with some random grease.

This was the most famous dealer for being the worst in sales, after sales, service, or even attitude.

[Xulfiqar]

cv joints do not need regreasing for atleast 200,000 kms service - its 2022, does your dealer live in the past?

[haseeb.basharat]

He must have ruptured cv boots which made them leak.

[Xulfiqar]

Most probably.

Depending on the speed and experience of mechanics there, a corolla axle can be removed in under 20 minutes

[haseeb.basharat]

Yeah and then taking out tripod bearing with a hammer is an open welcome sign for vibrations.
They don't even have tool to remove outer axle boot without removing inner cv joint. Even for the change of outer axle boot they will dismantle whole inner cv joint.

[Xulfiqar]

The boot stretch tool cannot work on factory or original type cv boots, the stretch boot is a very unique formulation and requires a spreading gun to install.

I do install those sometimes but only on very unique and rare axles whose boots require very expensive tooling like the old mercedes benz axles which are filled with a liter of gear oil each.

Btw, the tripod is removed with a leather faced hammer and punch to drive it off the splines, are these jokers directly hanmering the bearings?