Q: engine and electrical wont turn off

asked by on

Car starts fine but when i try to turn it off the engine and all the electrical stay on. Just replaced the ignition lock cylinder and still doing the same thing

My car has 200000 miles.
My car has an automatic transmission.

Hello. Thanks for writing in. Typically the ignition cylinder system is supposed to break the connection to the charging system so it will stop producing energy. If the system never gets the message to stop, or the charging system has malfunctioned and cant stop, the alternator will continue to provide energy to the engine keeping it going. If the alternator is the issue, you can unplug it and the engine should stop. Only do this when you have removed the key after it was running, and it is still continuing to run. Do not do this if the key is on. If the alternator stops, you know it is the cause of the "feedback". If it does not, then you will have to find an alternative source for the feedback, and it may be related to the ignition cylinder. Start by testing the alternator, and take any further diagnostics from there.

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
  1. Home
  2. Questions
  3. engine and electrical wont turn off

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

Q: Check Engine light on after car won't start

If the car is struggling to start, the battery and starting system need to be checked. A weak battery will not turn the engine over fast enough. Also, there will not be enough power for the fuel pump and ignition....

Q: Q: Is it worth fixing

Hi there, thanks for writing in about your 2000 Cadillac Escalade. If you overheated the engine until it died, then you may have damaged the engine internally on cylinder number 4. Your water pump is most likely the part leaking....

Q: Power windows and blinkers don't work.

Hi there. The relay to the windows could have stopped working. Also, the flasher or relay could have stopped working as well. Since these are two different electrical circuits, it could be possible that both relays quit, but more an...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...