Skip the auto shop - Our mechanics make house calls

Q: knocking noise at shifting gears vvt damage would that make a nosie

asked by on

knocking noise at shifting gears vvt damage would that make a nosie

My car has 132000 miles.
My car has a manual transmission.

A: Unfortunately, it is not possible to know w...

Unfortunately, it is not possible to know what the noise is without hearing it in person. VVT damage would most likely cause a rattling noise in the valve train. It could become louder between shifts, but the shifting of gears isn’t the issue you should be worried about.

If there is indeed a problem with the VVT, this should be repaired ASAP. You could be starving the head of oil that will cause major damage. The solenoid that actuates this system has plastic guides that can fall apart sending lots of debris into the motor. In addition to this, you could have valve interference with the pistons causing even more damage.

If the VVT is the problem, it will make a rattling noise on start up. Often it will continue after start up.

Transmission problems can have excessive clearance between the gears that will can make noise in between shifts as well. The trans will need to be rebuilt, but it won’t cause any other problems. To have this diagnosed, a certified professional, such as one from YourMechanic, can come to your car’s location to inspect the knocking noise and let you know what needs to be done.

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: Opinion about older AC systems versus the AC systems in modern cars

Here is the kicker. The old air conditioning systems were huge and they wasted a lot of energy. But with that said, they blew as cool as can be and lasted a long time. For example, you can take...

Q: What can happen without using my fuel rail pressure sensor?

The fuel rail pressure sensor is used by the computer to regulate the fuel pressure by regulating the voltage to the fuel pump to slow it down or speed it up. If the pressure switch is bad then the computer...

Q: steering wheel noise

The shaking could be your tie rods. There are two sets of tie rods on your vehicle. The two inner tie rods and two outer tie rods. The outer tie rods are easily replaced but require the car to be...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.