Hi, my name is XXXXX XXXXX X'X an Acura expert. I'd like to help you with your question today.
It sounds to me like you have a problem with the range switch. That's a switch that tells the car's computer what gear you are in. If the bulbs are good for the reverse lights and they don't come on in reverse the switch isn't working correctly most likely.
As far as the D4 light flashing that's a normal condition when you have a transmission related problem
Is there anyway to test if it is the range switch? Does the range switch control the speedometer as well?
The first step to fixing this is to have the car's computer scanned for trouble codes.
If the range switch is faulty it should code for it
There is a test for it where you Ohm check the connector pins in various gears
It shouldn't disable the speedo BUT it could cause shifting issues that could cause the speedo act funny
Autozone is open for another hour so I may run it down there real quick and have them test if out for me
That would work as long as their scan tool can read transmission related faults
What would be your guess as far as why the speedometer is malfunctioning?
Is it working at all? Intermittently?
It's pretty sporadic starting today
On your year CL the speed sensor is most likely faulty. It's on the outside of the transmission and pretty easy to replace.
Just unplug it and remove a 10mm bolt and pull it out.
ok. I am going to run down and see if Autozone can read it and price check the parts. thank you!
I took it down to Autozone they gave me a series of codes that are wrong with the car
Vehicle Speed Sensor
Faulty EGR Valve
and one that oddly enough simply said to "fix other problems"
So I have the VSS on order however I have a new problem as well. The parking and reverse gears are not working. Could this be related to the vss as well or is the transmission going out? I am waiting for my motor to cool down so I can check the transmission fluid now
Update. I check the transmission fluid it was low but didn't fix the problem. Oddly when I put the car in neutral it put it in drive
What is the range switch and where is it located?