Skip the auto shop - Our mechanics make house calls

Q: Speedometer not working when warm.

asked by on

The speedometer does not work on my Chevy S10. I replaced the speed sensor and the instrument cluster, and it is still not working. The speedometer works fine when first starting or in cold weather, but quits working once the motor or weather warms up.

Due to the fact this condition is caused by both outside weather and engine temperature I am inclined to look at the vehicle speed sensor side of the circuit as interior cabin temperature is less effected especially by engine temperature. The wiring at the vehicle speed sensor needs to be checked, also the speed sensor needs to be checked that it is generating voltage. Due to the conditions that the failure occurs running new wiring and replacing the connector at the speed sensor may be the repair as it may be difficult to create conditions where the speedometer works and fails for testing. You may want to enlist the help of a mechanic, like one from YourMechanic, to assist in the diagnosis and repair of this issue.

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: Speedometer and odometer not working

Hi, have you had a chance to get the engine code checked out? Other Integra owners have reported similar issues and usually the VSS or Vehicle Speed Sensor as the culprit. Both the speedometer and the odometer use this sensor...

Q: What year(s) and model(s) engine can be swapped out for my worn out 350sdl motor. Best bang for my buck.

Hi there. Unfortunately, since this is not a service that our mobile mechanics are able to provide, we're not able to give you recommendations for which engine would be applicable for swapping into your Mercedes-Benz. Although there are several engine...

Q: Instrument lights come on. Speedometer and tachometer stop working, then come back on periodically

Hi there. There is a loose ground that is causing the lights to appear at any time. Check the battery cables to ensure that they are tight. Check the ground wires under the dash and make sure that they are...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.