Skip the auto shop - Our mechanics make house calls

Q: hi! got new half-shafts aka drivetrain in the start of this year and now im getting vibrations when accelerating in second gear

asked by on

got new shafts aka drivetrain in the start of this year and now im getting vibrations when accelerating in second gear, could it be that the half shaft are bad ?

My car has 67600 miles.
My car has a manual transmission.

A: Yes, start by checking for play in the shaf...

Yes, start by checking for play in the shaft joints and check the motors mounts. If only one side is bad use chassis ears to isolate which side is causing the problem. If the half shafts were "bad" (as in imbalanced), you would have had this issue (vibration) from the beginning unless of course a balance weight fell off (if used, sometimes rubber dampers are installed on shafts). However, it is possible for the half shafts to wear and create excess clearance, particularly on inboard joints that could create your symptom under acceleration.

The question then becomes why did the CV fail prematurely? One overlooked area are the motor mounts - but this is less likely since the car is only 4 years old. If the motor mounts are broken, worn, misaligned, or sagging you will get vibration and shudder and that misalignment WILL also prematurely wear out your axles because your CV joints would not be working at the design angle (i.e., the load is in the wrong spot). Depending on how you drive and the miles on the car, check the motor mounts. Check the CV shafts for excessive play. If the problem is not the CV shafts, really any rotating component is suspect. If you need help with this, a technician from YourMechanic can inspect the vibration and help you make the correct repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Do you have to lift the engine to change to oil pan

Hi, thanks for writing in about your Ford 500. The short answer is no. You'll have to remove the catalyst, bracket, and then the transmission's lower inspection cover. Once that's done, remove the oil filter adaptor to the oil pan...

Q: Jerking of the steering wheel that occasionally becomes locked

GM has a TSB out for this issue. Basically what the bulletin says is that, due to increased friction in the steering gear, there can be a locked up or notchy feel that can be experienced when the steering wheel...

Q: My car has an oil leak, my axle is hot, and there is shaking.

Hello and thank you for contacting YourMechanic. The axle should not be very hot. The axle will have some heat transfer from the transmission, but not so hot to where you cannot touch it. Check the transmission oil level to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...