Speedometer Problem

thusu · Newbie Joined: Oct 11, 2004 Posts: 1

I bought this car a few months ago, and had overheating problems. So I took it to the Honda Dealership, and they diagnosed a Blown Head Gasket. So they replaced the head gaskets, water pump, thermostat, timing belt, head bolts, and all the other intake gaskets. So I picked my car up the other day and drove it home and I had no problems at all, everything worked fine.

The same night when I took it out for a drive WITH THE LIGHTS ON I noticed after about 10 minutes of driving that the Speedometer started acting crazy, and after a while it just stayed at 0mph, and when it did this the odometer stopped moving too. So I tried to adjust the Light Switch that controls the brightness of the Instrument Panel, and if I keep the switch at one extreme the speedometer stays at 0mph but if I keep it at the other extreme the speedometer stays at 140mph and the odometer moves like it is going that speed, even if I am parked.

I do not have this problem when I am driving around in the day with the lights off, unless I like try to use my power windows or something, and then the speedometer jumps a little bit and comes back to the normal speed. Also yesterday when I was driving on the highway with the lights on I did not have any fluctuation with the speedometer.

So my questions are:

1). Does this have anything to do with the dealership's work on the BHG ?

2). Could this be a bad Speed Sensor ?

3). If it is why does it only fluctuate when the lights are on ?

4). If it isnt what could it be ?

5). Why do you think that it doesnt fluctuate when I go at a constant high speed ?

I am sorry I am asking so many questions, its just that I have spent almost $2000 on the whole BHG job, and now this problem, just frustrated. It is a great car, and I want it to last.

Your help, will be GREATLY APPRECIATED.

xfactor · Posted: Mon Oct 11, 2004 12:43 pm Post subject:

sounds like some wires got crossed up when they did the head

i would just take it back and tell them

might also just be a bad ground somewhere which could also be from the head work

typeII-Ak · Newbie Joined: Sep 18, 2004 Posts: 2

Do you think it is electrical not mechanical?
I have the same problem and this happens to me all the time. The car runs great thought.
I'm concerned about this flashing D4 light.

mossman · Newbie Joined: Jul 16, 2004 Posts: 6

Take it back to the shop. They obviously screwed something up. They could have accidentally damaged the speed sensor or a wire. I am sure that it is nothing serious. Let me know what you find out.