Skip the auto shop - Our mechanics make house calls

Q: As I drive, the door locks and keep locking and unlocking, and acceleration seems sluggish.

asked by on

Initially, it only happened once in a while. Now it happens every time I drive. As I drive the door locks keep locking and unlocking, and acceleration seems sluggish. It will stop for a while when driving and then start up again. There is no check engine light on.

My car has 86000 miles.
My car has an automatic transmission.

A: Hello, thanks for writing in. Most of the t...

Hello, thanks for writing in. Most of the time this is due to a bad connection or a failing ignition switch. If this is occurring with the locks as well as a power loss then you may have a bad ignition switch. I would treat these as separate issues though. I would start by checking for any codes in the computer relating to the power loss and check all of the sensor readings. That should turn up the problem with the power loss. Then I would check and see what the locks are cycling by checking the connection at the main switch and doing a voltage drop test of the ignition switch. It can also be a fuse box or battery issue so those should be checked also prior to replacing anything. If you need to have this door lock and power loss checked, consider YourMechanic, as a certified mechanic can come to your home or office to inspect the issue for you and make or suggest the necessary repairs.

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

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 do i turn off the auto door lock feature on my 1998 Silverado?

Hi there. With the ignition switch off grab the multi function switch and pull it towards you. Hold the switch and turn on the key to run two times. After you shut off the ignition switch, release the multi function...

Q: Car wont shift into Drive.

Does the transmission slip in the other ranges or when you select drive, does the engine speed increase without moving the vehicle? In this case you may have an internal transmission failure as a broken forward band is common for...

Q: Car over heating

If there are no leaks and no blockage in the system or problems with the cooling fan, then you may have a water pump that has worn impellers that may need to be replaced. I would recommend having the car...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.