94 accord speedometer stops at 20mph

Question

Ive read many things about accord's speedometers stopping at 20mph but all theirs have something else wrong. ive read that you might have to grease where it connects in the back of the needle. im not sure what im supposed to do some anyone help me out?

Answer 1

Hi there !

That is a very common problem to Honda Accords.

I have seen what you are describing many , many times.

The speedometer will not work or be erratic.

The speedometer is run electrically.(i do not mean digital!)

So there is nothing to grease in the Speedometer System as everything is electronic components.

To measure the signal you need to hook and auto meter to the wire and check for AC VOLTAGE. It will be small and goes up and down with the speed of the vehicle. A good square wave on a scope.

The main Integrated Chip on the speedometers circuit board has probably gone bad.This causes erratic or no operation of the speedometer/odometer.

There is no way to repair the problem.You must get a new or used speedometer ! !

My local pick n pull junkyard will sell me a speedometer for $20.00 for that vehicle in San Jose California.(the dealership wants $180.00 brand new.)

I hope that helps. Good Luck!