Skip the auto shop - Our mechanics make house calls

Q: Won't turn off when I turn the key

asked by on

my 1989 jeep comanche will not shut off when i turn the key to the off position. the radio however does turn off on key i have replaced the coil and the ignition switch, when i replaced the coil it shut off a few times and now its back to not turning off..have any idea's what to try next?

My car has 106000 miles.
My car has an automatic transmission.

Your vehicle’s inability to shut off can be due to several issues. You may be looking at an issue or a short with the ignition system. If the aftermarket ignition switch that is on the vehicle was installed incorrectly, or was dead on arrival (a bad switch), then you would have this issue. You may want to look into the ignition pull rod, which resets the switch when turned to off, is not damaged. These are made from a weak metal usually, and may have become damaged. If you are inclined to believe it is an electrical issue, turn to your alternator. The diodes may be providing more electricity to the engine after they should have cut off. The alternator would need to be replaced at this point.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Truck won't start consistently

Hi there: If the battery tested as being good, then the alternator shouldn't be the source of your problem. The alternator is responsible for charging the battery but also for powering all the components on your vehicle as the engine's...

Q: Battery drain

The smartglow fuses you are referencing won't directly place a noticeable drain on the battery themselves, but if they are blowing repeatedly then there is an electrical short somewhere that could be causing a battery drain on another system. If...

Q: Car stalling at random, could be an electrical problem?

Generally, when the car is running consistently and on all cylinders, when stalling it is often times a fuel supply issue (or in some cases indirectly related to electrical - i.e. bad connection or pulse to the fuel injectors). I...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...