well people have been saying its the speed sensor and other people are saying its the cluster.

i would like to fix this my self but obviously 3 different answers is not helping me
my last resort is to take it to the shop -__-

so back to the VSS.. when i start it jiggles but stays at 20 mph, and sometimes if im lucky it works perfectly fine
when i turn the engine off and turn off the power, it jumps up to 40mph and drops to zero

so what is exactly wrong?

 

It's the cluster. Mine does the same exact thing. My brother replaced the VSS before selling me the car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Volcom &raquo;</TD></TR><TR><TD CLASS="quote">It's the cluster. Mine does the same exact thing. My brother replaced the VSS before selling me the car.</TD></TR></TABLE> yep the motor can just get worn, the needle can get sticky, or stick in certain places, a short in the board so forth....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaccord &raquo;</TD></TR><TR><TD CLASS="quote"> yep the motor can just get worn, the needle can get sticky, or stick in certain places, a short in the board so forth....</TD></TR></TABLE>
so i just gotta replace the cluster and GG?

 

Refer to the Accord FAQ, Cluster Removal Thread.

I had a similar problem.

If you have a CEL light, it's the VSS.

If you don't try replacing just the green circuitry behind the speedometer. (refer to the thread)

 

I had the Speedometer indicating 20mph and Odometer not working problem, half the time. The other half it worked perfectly. Mine is a 1998 Civic EX. My problem was a broken solder connection (often called a "cold solder joint") on IC1 pin 10. My circuit board is the one pictured by REVOAPPAREL in this thread on 8-15-2012. This pin is one of the epoxy (or glued) pins. I used the soldering iron to remove this epoxy from the pin before re-soldering it. (The heat kind of crumples the epoxy so it can be scraped off with the iron tip.) The Vehicle Speed Sensor signal comes into IC1 on this pin, but also on IC1 pin 12, and IC2 pins 10 and 15. __ I found which solder connection was broken in the following manner: Removed the circuit board from the speedometer/odometer mechanism (it pulls right off.) Attached a 12 volt power supply to IGN and GND. Used a voltmeter to read COS & SIN voltages. These 2 voltages tell the speedometer needle where to point. (RED voltmeter lead on COS+ and BLACK voltmeter lead on COS-.) (Don't look at the voltages with respect to GND. The speedometer doesn't see that.) When the circuit board was working correctly, the COS voltage was 5.04 and the SIN voltage was 0.26. These are logic levels ONE and ZERO. (If you remember your Trigonometry, the COS of zero is ONE and the SIN of zero is ZERO. Zero is the vehicle speed.) When the circuit board wasn't working correctly (this is when the needle would indicate 20mph IF it was attached) COS voltage was 2.47 and SIN voltage was 1.80. When I read these WRONG voltages, I started touching things and when I pushed on IC1 the voltages became correct for a moment. Then I used a probe to push against each IC1 pin individually and found pin 10 was the pin not making contact. __ A person should be able to use this technique to find a bad solder joint anywhere on the board causing incorrect speedometer readings when the vehicle is sitting still. ___ I also traced out the entire circuit board and drew a schematic. If I figure out how to post a scanned pdf of this, I'll attach it. ___This is my first post to any automotive thread. I sincerely hope this helps many of you out with your speedometer indicating 20mph problems! Enjoy Troubleshooting! ((Toolman1966 _ APRIL 14, 2013))

 

And this thread is from 2007?

 

I have this same problem on my 94 Accord LX 5spd. I was changing my upper control arm and had to move my underhood fuse box out of the way to get to the nut. When I put the car back together, the speedometer now jumps to 20MPH when I turn the key. It kind of wobbles there. The first time it happened, I turned the car off and back on, and the speedo worked fine. Now, its just jumps to 20MPH whenever I turn the key.

Is there any wire from the VSS that goes to the underhood fuse box?

Does anyone have the wiring diagram for the VSS to the speedometer?

EDIT: I got it to work: https://honda-tech.com/editpost.php?...ost&p=49427413