Q: Key won't turn in the ignition 1978 Ford Mustang II

asked by on

Steering is fine, must Hotwire to start, getting new solenoid but can't figure out why the key port won't turn

My car has 250000 kilometres. My car has an automatic transmission.

Hi there - there a couple of possible faults preventing your ignition key from turning in the ignition lock cylinder. First is that the key is sufficient worn, or the lock tumblers themselves, that they are simply not moving the tumblers enough to release the cylinder. Replacing the keys and tumbler will correct this. It is also possible on your model that there is an interlock mechanism that is not releasing - due to your "hot-wiring" - and there is a mechanical block on the lock cylinder. Restoring the wiring to include a working interlock will correct this possible problem. I would recommend an inspection of the ignition switch and interlock mechanism to determine the actual cause, by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Key won't turn in the ignition 1978 Ford Mustang II

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: No hot air coming from heater

You may have a clogged heater core that may be prohibiting the outer linings of the heater core to get hot. As you know, the heater core is a series of tubes that the coolant runs through that generates the...

Q: Q: My injectors are not pulsing.

Have the power and control circuits for the injectors been tested? If the injectors do have power, but no ground control from the computer to turn them on there may be a fault in the circuit or the electronic control...

Q: 2007 Jaguar XJ8 cannot start, headlight flashes

Hello. It is possible that there is a problem with the fuses. The headlight flashing could be a result in a problem with the car’s security system. After multiple attempts to start the car, the headlight may flash to let...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.