Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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Did the garage use a dial test indicator gauge to check wheel hub run-out? Also, did the mechanic check wheel bearing play?
Run-out is measured to make sure the hub rotates almost perfectly round with very little "ovalness" to the motion. Normally this vibration under acceleration is due to driveshaft problems. Has the vehicle been in an accident previously?
Check if the tyres are balanced (wheel leads can fall off), check for wheel bearing play, make sure the wheel nuts are tight. It's best to check the basics before digging deep into other suspension components. It's difficult to diagnose this sort of problem with the car in person, and impossible to diagnose over a computer so I can only give suggestions according to my experience. Most garages would say that you should let it develop rather than randomly changing suspension components and hoping for a fix, it can get expensive for the customer.
I would recommend starting with the basics like I mentioned and then work inwards and start checking suspension components for play. Engine related issues can also cause steering vibration under acceleration such as dual-mass flywheel if fitted, engine misfire or engine mounts. You will have to go through a process of elimination to resolve this problem and check through with everything I have stated in this message thread.
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