Skip the auto shop - Our mechanics make house calls

Q: Car doesn't start after replacing key cylinder.

asked by on

I replaced the key cylinder. I used the heavy key chain and the car started fine. Then, all of a sudden, it won't start unless I let it sit for a short period of time. It is very erratic in this behavior, sometimes going weeks with no problems, and then acting up.

A: It sounds like you could have a faulty igni...

It sounds like you could have a faulty ignition switch. I would recommend getting a technician to test the switch to see if it is working correctly or if it needs to be replaced.

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: How to change battery in fob

Hello. The batteries for these key fobs are available from most auto parts stores and online. Once you get the battery the case is easy to split apart to replace the battery. This can easily be done on your own....

Q: Check engine light comes on when fuel gauge drops to 1/4 tank or lower.

Hi there, thanks for writing in. It sounds like your car is experiencing misfires due to low fuel. Even though your tank reads 1/4 full, the fuel level sender may be incorrect. This could be compounded by the fact that...

Q: Check engine light / truck stalled on me today and wouldnt start

As you may know the oxygen sensors which are part of your emissions system read exhaust gases to determine whether or not the appropriate amount of oxygen is present in the exhaust. Based upon this reading, this information is relayed...

Related articles

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...