Do you hear a knocking noise while backing up?
Attempt to replicate the noise while backing up. If the brakes are of a concern, you will likely hear it in both directions. Something like your drive shaft may not be heard while backing up. Most of these components can be tested while on the vehicle, but you may need a hand.
Why does my car make a knocking noise when I decrease speed?
Try downshifting the transmission on a road with no other cars and let the vehicle decelerate as the transmission slows down the vehicle without touching the brake pedal. If there is no nose, then the brakes is your problem. If the noise is still there, then either there is a loose suspension part or there is a problem with the transmission.
What makes a clunking noise when coming to a stop?
However the brakes and the drive shaft can both causing a clunking noise when coming to a stop. Attempt to replicate the noise while backing up. If the brakes are of a concern, you will likely hear it in both directions. Something like your drive shaft may not be heard while backing up.
Where does the knocking sound come from when decreasing speed?
The knocking sound appears to be coming from the driver’s side while decreasing speed at stops on straight roads. My car has 135000 miles. My car has an automatic transmission.
What does it mean when your car makes a knocking sound?
A knocking sound from your car’s engine is never a good sign. In fact, it almost always means you have a serious (and costly) problem on your hands. A low oil level can cause engine knocking. If you get lucky, the noise may subside when you refill the engine with oil.
Attempt to replicate the noise while backing up. If the brakes are of a concern, you will likely hear it in both directions. Something like your drive shaft may not be heard while backing up. Most of these components can be tested while on the vehicle, but you may need a hand.
The knocking sound appears to be coming from the driver’s side while decreasing speed at stops on straight roads. My car has 135000 miles. My car has an automatic transmission.
Where does the knocking come from in an engine?
Another possible source of engine knocking isn’t actually coming from the engine itself at all. It could be coming from the accessory belt. As the engine runs, it turns a belt that’s connected to various pulleys throughout the engine bay. This belt must be under the exact right amount of tension so that it turns smoothly and quietly.