Q: Car will not shift, speedomete is erratic..

asked by on

When driving the car, it will not shift from the initial, or first gear.. speedometer is erratic. No OBDII code, Is it possible that the Output, or Input speed sensor is bad?

Hey there:

It’s possible that the speedometer sensor is the source of your shifting and speedometer issues. The speedometer sensor is designed to register the driveshaft’s rotational speed and relay this information through the speedometer cable and to the vehicle’s computer, which converts electrical pulses into a numerical speed. This is where it can cause issues in shifting in an automatic transmission.

Since your car is a 2008 Chevrolet Malibu, a diagnostic scan by a certified technician, such as one form Your Mechanic, will give you a good starting place to determine the exact source of your shifting and speedometer issues.

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. Car will not shift, speedomete is erratic..

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: My car is still acting up and the speedometer and odometer is not working.

Hi there. First remove the battery cables both positive and ground. Go in the cab and operate everything, even though there is no power. After 12 minutes put the battery cables back on. This will drain all power to the...

Q: Q: Transmission stuck in park

In order to shift out of park, the transmission module needs to see the engine idling and the brake pedal depressed. If one of these criteria is not met, then it will not let you shift out of park. There...

Q: Issue with my car stalling - 2003 Chevrolet Malibu

Hello, thanks for writing in. Replacing the battery reset the diagnostic code retention, so if a problem code for catalytic converter failure is present, that is a persistent problem, and requires attention. The sluggish performance you mentions, and your advanced...

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...
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...
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...