Q: Knocking when down shifting

asked by on November 19, 2017

When down shifting a knocking sound comes from either the clutch, or the transmission.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How does the front passenger power window switch work?
Your car is equipped with power windows in the front and rear (unless you drive a coupe, in which case you only have front windows anyway). The passenger side power window switch offers the ability to do three things: Roll...
How do you dehumidify the interior?
While your Accord is designed to protect you against temperature extremes, it’s not airtight. That means humidity can rise in the cabin. To dehumidify the air, just follow these easy steps: Switch on the fan. Switch the air conditioning on...
What does the Air Bag Warning Light mean?
The Air Bag Warning light is located on the instrument panel. When the light is illuminated, there is a problem with the air bag system and the vehicle should be inspected or repaired as soon as possible. Tip Like all...
Malfunction with brake light sensor.
These systems can be tricky. Also on European vehicles they sometimes have more lights than Americans are used to. It is possible that there is a bad connection that is causing this light to come on. However it is also...
my car runs weak
Hello there, many different parts can cause the vehicle to run weakly. It would most likely be a misfire condition, spark plug wire, fuel pump, low fuel pressure, or an oxygen sensor. A qualified technician, such as one from YourMechanic,...
Service Brake System Light beeps on for a minute then turns off
There is a problem with your brakes or the ABS that is turning this light on. A code reader should tell you what specifically is the problem. Most likely, a wheel speed sensor (https://www.yourmechanic.com/services/wheel-speed-sensor-replacement) is dirty or has failed. This...
Excessive fuel consumption
Hello. An excessively high fuel trim and decrease in fuel efficiency can be caused by many things. If you have already replaced the aforementioned components then I would move on to examining the vehicle's engine management system. The fuel trim...
car only cranks will not start. 2001 Mitsubishi Galant
Hi there - yes, the fuel pump can fail (https://www.yourmechanic.com/question/is-my-fuel-pump-working) that quickly. It's also possible that the fuse or fuel pump relay have failed, yielding the same result. You can confirm that this is a fuel supply issue by spritzing...
security light blinking
The immobilizer may be preventing the engine from starting. If the security warning light is on constantly while you are trying to start the car, please refer to YourMechanic's immobilizer tutorial - suggestions for disabling (https://www.yourmechanic.com/article/how-to-shut-off-the-anti-theft-device-in-your-car-by-jason-unrau). If you cannot disable...

Related articles

A Buyer’s Guide to the 2012 Volkswagen Routan
For For those who need a vehicle that focuses on people-moving and little else, the 2012 Volkswagen Routan just might hit the mark. With improved fuel economy and responsiveness compared to the Chrysler platform on which it is based, this...
Ten Sports Cars That Double as Good Daily Drivers
The best daily driver is a car that's reliable, usable, and still fun to drive. Popular daily sports cars include the BMW M3, Subaru WRX, and VW GTI.
Industry News for Automotive Techs: October 1-7
Wireless electric car charging, VW diesel scandal payouts, 3D-printed car technology, new Cardone car parts, and high September auto sales.