Skip the auto shop - Our mechanics make house calls

Q: Speedometer not working

asked by on

My speedometer and odometer gage hasn't been working and the shift indicator shows sometimes and when the gages don't work the truck runs like crap and when they do work the truck runs normal

My car has 223394 miles.
My car has an automatic transmission.

Hi There, This may be caused by a faulty transmission speed sensor. The speed sensor reads the rotational speed of the reluctor wheel, located within the transmission. The speed sensor also controls the anti-lock braking system. Driving with a bad speed sensor usually causes the ABS to malfunction and can lead to loss of braking power and/or an accident. When this is not working properly, you may also notice the transmission hesitating to shift gears, erratic tachometer readings, the speedometer not working properly or the odometer not working properly just as you have described. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

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: Hood cable broken

Hello. The best way to get the hood open when the cable is broken from the lever is to use a pair of pliers to pull on the cable very hard. This should created the same force that is created...

Q: 95 Bluebird. Fixed the drive belt and want to know, can I use a drive belt from another Nissan car until the new one gets here?

Hi, thanks for your question. I'd be happy to help. As long as the belt is the same width and close to the same length you can use it.

Q: I have a 1998 Chevyc1500 once I crank it will randomly rev/accelerate and then it stops reving.

Hi Zoe. Thanks for contacting us today. In most cases, this type of problem is caused by a dirty throttle body, as carbon build-up and debris becomes trapped between the throttle blades. It can also be due to a damaged...

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...
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...
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...