Q: Instrument cluster on the dash, tachometer bounces, speedometer at 0. Unplugged ABS module, speedometer at 0. doesn't shift gears

asked by on

My dash has just recently started going haywire. My Tachometer will bounce up and down along with the temperature gauge. My Emergency brake light stays on and my Speedometer will sit at zero regardless of what speed I am going. The ABS light remains on as well. The AC does not blow cold air when this happens. I read that it could be the ABS module about to go out and to try driving around with it unplugged to see if the dash situation persists. I tried that and when I do, speedometer still sits at 0 and my car does not shift gears while in drive. When i re-plug the ABS module back in, it drives like normal and the dash works like its supposed to but only for a short time before it starts doing what it did before, but during the time the dash is going crazy with the ABS module still plugged in, the car drives normally. I took it to Auto zone to get diagnostics run on it. The only error it could find suggested that my speed sensor encountered an intermittent problem. What could it be?

My car has 114000 miles.
My car has an automatic transmission.

Hello. There are a lot of possible issues that can cause this. Most of the time this is either due to a short in the ABS module or it may just be a voltage issue. I would usually start by making sure that the battery and alternator are in good shape. If they are good, then I check the connections at the battery and the ground connections. Any of these will cause this issue if they are interrupting the voltage supply. If those are all fine, then it will need a new ABS module. I recommend having another expert provide an inspection for the car. A qualified professional from YourMechanic can inspect the relevant electrical systems in order to diagnose the problem and advise you on correct repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Instrument cluster on the dash, tachometer bounces, speedometer at 0. Unplugged ABS module, speedometer at 0. doesn't shift gears

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: Can you resurface the rotor?

You can not install new brake pads on a vehicle without either re-surfacing the brake rotor on a lathe or replacing the rotor with a new one. This is because allowed thickness variation on a rotor (new or used) is...

Q: Dashboard warning lights come on during acceleration

Hello. Thanks for writing in about your Infiniti EX35. It sounds like one of your sensors for the system is reading incorrectly. I usually check the tires first as an odd tire on the car will cause this. If the...

Q: Q: Gears won't shift

If the gears are seizing, and the transmission will not shift, it is possible that there may be some sort of electrical or mechanical problem. I would recommend having a professional technician, such as one from YourMechanic, diagnose the vehicle's...

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...
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.