Q: Knocks upon starting and won't drive.

asked by on January 18, 2016

When I start my car it makes a knocking noise and I can't drive it. The gear stick does not shift out of park on my automatic transmission.

Your shifter has a solenoid that will not let the shifter come out of park unless your foot is firmly on the brake pedal. This is a safety feature to prevent cars from rolling away if the brake pedal is not depressed. If this solenoid, or another part of the park interlock system has failed, the shifter may not come out of park. Concerning your knocking noise I would check the level of your engine oil if you are able. Low oil can cause your engine to knock due to low oil pressure. I would ask for an inspection from a mechanic to check into both of your concerns so your vehicle will be 100 percent again.

Was this answer helpful?
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

Get a quote

What others are asking

Transmission not shifting gears, engine died out

Hi there. It sounds like the engine is the issue and not the transmission. If the engine was low on oil, then that will cause a serious engine failure. As the engine failing can cause some strange shifting issues as...

Bad O2 sensor

Hello, code P0420 represents right main catalyst deterioration. There can be a few things that need to be checked before replacing parts. The intake system needs to be inspected for vacuum leaks and unmetered air leaks. The exhaust system should...

Will a spare tire on the front of the car cause next to brake badly?

Hi, and thank you for your question. When you have an issue with a flat and need to replace it with a donut tire, you will experience some difficulty when driving the vehicle. When putting the donut tire on the...

Related articles

Symptoms of a Bad or Failing Crankshaft Harmonic Balancer
Common signs include engine vibration, misaligned timing marks, and a separated harmonic balancer.
How To Troubleshoot a Car That Makes a Whining Noise When In Gear
Whining is a common car noise that cars make when being shifted from gear to gear. Test your car in different gears and check the fluids.
The Most Common Error Codes for Transmission Problems
If your Check Engine Light has come on, there are a number of conditions that could be causing it. Many are related...