Skip the auto shop - Our mechanics make house calls

Q: Dashboard gauges don't work

asked by on

My gauges on my dashboard don’t work - oil, temperature and amp. But my dashboard lights and gas gauge work. So I decided to change the temperature sending unit, because the needle pegged when it was grounded. But that didn’t help the issue. The feed wire has 12 volts when the ignition is on. And I have checked the ground straps on the driver’s side of the truck running from the frame to the firewall and on the passenger side running from the engine to the firewall. What else could you recommend? Help is needed.

A: There is still a ground path problem from t...

There is still a ground path problem from the engine to the instrument cluster, whether through the chassis or not. Might be worth running a new ground wire directly from the engine block to the ground connector on the instrument cluster in the dash. If you need help having this done, have a certified technician, like one from YourMechanic, inspect the electrical system and resolve the 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

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: Temperature gauge rises when stopped

It sounds like there may be a problem with your cooling fan, particularly the fan clutch. The fan clutch has a mechanism, that based on the temperature of the engine, will either let the fan spin faster or slower. When...

Q: Full system failure and no power to the vehicle

Hi there. Check all of the grounds to the vehicle from the engine to the frame and from the chassis (body) to the frame. A faulty or loose ground will cause multiple issues with the engine and electrical systems. If...

Q: Brakes no longer working.

If you step on the brake pedal and it feels soft or drops to the vehicle floor, air has entered the system. However, if the brake pedal is hard and difficult to depress, the power brake booster may be at...

Related articles

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...
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.