Skip the auto shop - Our mechanics make house calls

Q: I replaced both Vss but still problems exist with speed over 20 mph. Speed tac and rpm gauges go crazy.

asked by on

replaced both VSS and did not fix problem of going over 20 mph the tac and rpm gauges jumps back and fourth and will not go

My car has 155000 miles.
My car has an automatic transmission.

The problem may not have been in the sensors, but the electronics inside the instrument cluster itself. If the circuit board has corrosion or is cracked, it may interrupt the electrical signals to the motors that move the needles across the display. Consider hiring and experienced technician like one from YourMechanic who can come out and take a closer look at your erratic instrument cluster and offer a more personal diagnosis.

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!
  • Home
  • Questions
  • I replaced both Vss but still problems exist with speed over 20 mph. Speed tac and rpm gauges go crazy.

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 wont start battery, alternator, and starter has been replaced....lights come on and it turnsover it clicks ...

Hi there. In most cases, when the engine clicks over and the starter will engage initially but stops, it's caused either by a starter or ignition relay that is faulty - or the starter motor is not correctly installed and...

Q: How do I reactivate the auto-up and auto-down features?

The auto-up and auto-down features allow you to entirely roll up or down a power window with one press of a button. Sometimes the auto-up and auto-down functions stop working, and need to be reactivated. To do this, pull the...

Q: Instruments and radio going on and off in car

It sounds like you may have an alternator issue. Many times when alternators go bad they can affect other electrical systems of the vehicle since the alternator is tied in with the electrical system. My first recommendation would be to...

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...
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.