Q: car wont start and knocking noise

asked by on October 21, 2017

im driving down the road and my car dash blinks and then my car cuts off so i pulled to the side of the road and try to crank it nothing happens i got a jump nothing happen, changed the alternator it doesnt crank but have knocking noise can you give me some advice

My car has 127000 miles.
My car has an automatic transmission.

Car is making a noise Inspection $79.99 - $99.99 Get a Quote

When you turn the engine over with the starter motor, if there is an unusual and marked noise, such as knocking, that did not exist before, that most likely signifies that something has broken. Is the car, by chance, out of oil? Running the engine without oil can cause an engine to stop and also will cause noise. If there is adequate oil, to have the exact cause of the knocking pinpointed, and get an estimate of the required repairs, you can request a vehicle noise diagnostic and the responding certified mechanic will also determine why the car is not starting. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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

What is the purpose of having 2 thermostats in a 2013 crystler 200

Your vehicle has two thermostats, a primary and a secondary. The primary and secondary thermostats have different temperature profiles with respect to their opening temperature because they are located on different areas of the engine. The primary thermostat is located...

My car won't go in reverse then when it do it stops suddenly in its tracks

Hello, thank you for writing in. There are several issues that would cause issues while reversing and in drive. Start by having the vehicle scanned for diagnostic codes. This can be done at most automotive parts stores, or it can...

VVT VS VCT

Mike, you are very welcome! Keep in mind there are several components to these systems, and the issue may not be the solenoid alone. Despite the cause of the noise, the technician will be there to find it and help...

Battery isnt charging while driving?

It sounds like you may have a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator pulley....

Changed my brake pads, now there is a grinding noise and the brake is spongy

The grinding noise you may be hearing may be a sign of worn out brake pads grinding on the brake rotors. When the brake pads wear down beyond a specific measurement, this kind of sound is common and may also...

Intake maifold runner control is stuck open

Hello, thanks for writing in about your 2001 Mazda Miata. Due to this trouble code, the intake manifold runner control will need to be replaced. If this is not done you can cause serious damage to your car. If you...

Car only starts when pressing the gas pedal

Hi. The computer system that runs your engine has a memory system that requires the battery to keep it alive. If the battery is disconnected for any reason, the computer learns that specific idle, which is no the appropriate one....

Related articles

The Best Used Cars to Buy for Teenagers
If If you’ve decided that you’re ready to purchase a used car for your teenager, then you’re probably pretty picky about what you’re looking for. Likely affordability, safety, and fuel economy are high on the list. With that said we’ve...
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...
A Buyer’s Guide to the 2012 Toyota Camry
America’s America’s best-selling passenger car for over a decade, the Toyota Camry is highly reliable, comfortable, and gets great gas mileage. It’s now available in a four- or six-cylinder engine, as well as a hybrid option, and it continues to...