Skip the auto shop - Our mechanics make house calls

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

asked by on

Instrument lights (brakes,engine oil,water) come on and go off sporadically also speedometer and tachometer stop work and start working sporadically.
My car has an automatic transmission.

A: Hi there. There is a loose ground that is c...

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 tight and not broken. If all wires are connected and the battery cables are tight, then the instrument cluster voltage regulator needs replaced. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from You Mechanic, to guide you with the diagnosis and repair of your vehicle’s instrument lights.

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: Had the steering rack replaced and now the steering angle sensor is acting up after a front end alignment.

Hi there. If the codes are coming on for the steering angle due to either the sensor failing or the plug not plugged in all the way. Check the harness on the steering sensor and see if its plugged in....

Q: Timing kit

Hi, thanks for writing in. Your symptoms sound more like the idler assembly for the serpentine belt, which is spring-loaded, may be the source of the squeak, or the serpentine belt idler pulley - with a failing bearing. If you...

Q: Hi there i have a ford focus 2004 which has a slight knock when i tilt it left or right what could this be please

When you turn the steering wheel and you occasionally hear a knocking sound, it can be caused by multiple components. Some of the more common components include the wheel bearings, power steering box, tie rods, CV joints or strut mounts....

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...
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...