Q: My engine won't turn just a single click or knock when I turn the key

asked by on August 13, 2017

My engine won't start just a single click or knock in the engine carpartment when I turn the key battery and electric All is working

My car has 2003000 miles.
My car has an automatic transmission.

If the starter motor is not even cranking the engine, among the first possibilities is a weak battery, excessive voltage drop in the starter circuit due to poor electrical connections, or a dead starter/solenoid. Prior to performing diagnostics the battery should be load tested. With a battery in good condition and the immobilizer (security) system off, if the starter motor does not operate at that point, there are only two possibilities: 1) either there is no power to the starter motor/solenoid, or an excessive voltage drop, hence the entire starter circuit would have to be diagnosed; or 2) there is power but the starter/solenoid itself is bad and that includes intermittent operation which does happen. If you desire that a specialist from YourMechanic determine which of these is the issue, and get it resolved, please request a no start diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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

2003 Toyota Camry radiator fans are not coming on when the car is started but one fan runs when the temp sensor is unplugged.

The radiator fans are controlled by the Electronic Control Unit via the fan relay. The fans are supposed to come on when the engine reaches a certain temperature, or when the AC pressure comes up. If the car is overheating...

Whining noise, now car is dead

From the way you describe your concern, it leads me to believe that you do have something going on with the belt drive or possibly the charging system. For your safety, the belt drive, which is driven by the crankshaft...

Radiator leaking from crack in top

This is pretty common. The metal gets very thin from cooling system wear, and the tank cannot hold the pressure any more and splits. I recommend replacing the radiator and testing the complete system for any other problems.

Related articles

A Buyer’s Guide to the 2011 Toyota Land Cruiser
This This multi-tasking full-size SUV offers all the versatility of a traditional mini-van with the amenities and comfort level of a high-end sedan. Add in the 4WD that allows you to chew up rough terrain if desired (or necessary) and...
The Best Used Cars to Buy If Safety is #1
Maybe Maybe you’re a parent buying the first car for your teenager, or perhaps you’re a new parent and the safety of your little one is of the utmost importance. Or perhaps you're a safety-minded individual looking to make a...
The Top 5 Selling Cars in Kansas in 2012
Kansas Kansas sees a varied climate with all four seasons, which means drivers in the area choose a variety of vehicles. In years past, some of the front-runners have included the Ford F-150, Buick and Toyota Camry. 2012’s top five...