General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

Tachometer and speedometer broken

Thread Tools
 
Search this Thread
 
Old Oct 25, 2014 | 05:27 PM
  #1  
jreniak's Avatar
Thread Starter
Joined: Oct 2014
Posts: 4
Default Tachometer and speedometer broken

2000 Accord, 4 cyl, stick shift.

Tachometer is totally dead and speedometer is reading 40 mph as soon as you start the car. It does not change if you start driving.

Does any one know if the inputs for tachometer and speedometer come from the same place?
 
Old Oct 25, 2014 | 05:42 PM
  #2  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,098
From: United States
Default

1. For the Accord 4 cylinder with manual transmission, the speedometer gets it's signal/pulses from the Vehicle Speed Sensor (VSS). Does your Check Engine Light work and is the light on all the time?

For info. only: 4 cylinder with A/T gets the signal/pulses from PCM/ECM.

2. For both 4 cylinders with A/T or M/T, the tachometer gets its signal/pulses from the PCM/ECM.
 
Old Oct 27, 2014 | 09:49 AM
  #3  
jreniak's Avatar
Thread Starter
Joined: Oct 2014
Posts: 4
Default

Thank you for your response.
Just to clarify, the CEL was not on?
Also, after reading your response I decided to pull out my instrument cluster and try it out in a friend's accord just to make sure that the cluster itself is at fault.
It is. Then I opened the back and looked at the circuit board to see if there are any obvious defects. The board look good, there were no burn marks or cracked solder.

I called the local junkyard and the cluster is about $75. Would you know if the cluster from the other Accord is going to read the correct mileage (my mileage) since the input comes from the PCM/ECM?
 
Old Oct 27, 2014 | 09:50 AM
  #4  
jreniak's Avatar
Thread Starter
Joined: Oct 2014
Posts: 4
Default

Correction...............................Just to clarify, the CEL was not on!!!
 
Old Oct 27, 2014 | 03:59 PM
  #5  
redbull-1's Avatar
Super Moderator
Joined: Oct 2010
Posts: 7,098
From: United States
Default

The odometer reading is part of the instrument cluster.
 
Old Oct 28, 2014 | 08:21 AM
  #6  
jreniak's Avatar
Thread Starter
Joined: Oct 2014
Posts: 4
Default

Thank you.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
hondan00b
General Tech Help
3
Nov 2, 2010 06:55 AM
boerckk
General Tech Help
1
Sep 21, 2010 07:03 PM
02EXACCORD
General Tech Help
0
Sep 30, 2008 12:14 PM
nrmskate
General Tech Help
2
Sep 27, 2007 05:47 PM
pyaarawala
Audio/Visual Electronics
3
Aug 27, 2007 06:58 PM




All times are GMT -5. The time now is 02:27 AM.