- Mon Mar 08, 2010 9:47 am
#179833
I have a 1995 civic vx.
The speedometer always works during the first 5-10 minutes of driving, however when the engine warms up, the speedometer begins read incorrectly..
For example... Cruising at 65mph when engine is cold- all is normal.. 5-10 minutes later, speedometer will begin to drop to 40mph and stay within that range..
The guage will no longer read correctly until the next morning- again for about the first ten minutes of driving..
Once in a blue moon, the check engine light code 17 would come on after slowing down from high speed driving
What ive replaced:
3 clusters , new speed sensor, replaced speed sensor harness twice, bypassed vss wires in the harness and ran new wires directly from vss to speedometer cluster- still problem exists.
I reinstalled the vss back to the orig harness and did continuity tests and dc voltage tests..
With multimeter. I connected one end to the yellow/blue wire of vss connector and the other end to the black/yellow wire of speedometer harness.. I get full continuity.. BUT i am also getting continuity on all the remaining pins of the sppedometer harness too! (is this normal?)
i then checked continuity from the yellow/white wire of the vss harness and the yellow/blue wire of the speedometer harness and get full continuity- i checked all the other pins on the speedometer harness and get no readings...
I then did a dc voltage test...
With ign on and mutimeter on dc10, speedometer harness connected, i grounded the multimeter and the positive end connected to the yellow/white wire of the vss plug, i get a voltage reading of about 7v..
I pulled the vss assembly out of the transmission and inspected the gear teeth of the vss housing and it looks good
i inspected the plastic gear in the transmission that is visible through the hole where the Vss mounts and i didnt feel any missing teeth..
I feel drag on the vss when i turn it, not much drag on the gear in the trans..
The speedometer always works during the first 5-10 minutes of driving, however when the engine warms up, the speedometer begins read incorrectly..
For example... Cruising at 65mph when engine is cold- all is normal.. 5-10 minutes later, speedometer will begin to drop to 40mph and stay within that range..
The guage will no longer read correctly until the next morning- again for about the first ten minutes of driving..
Once in a blue moon, the check engine light code 17 would come on after slowing down from high speed driving
What ive replaced:
3 clusters , new speed sensor, replaced speed sensor harness twice, bypassed vss wires in the harness and ran new wires directly from vss to speedometer cluster- still problem exists.
I reinstalled the vss back to the orig harness and did continuity tests and dc voltage tests..
With multimeter. I connected one end to the yellow/blue wire of vss connector and the other end to the black/yellow wire of speedometer harness.. I get full continuity.. BUT i am also getting continuity on all the remaining pins of the sppedometer harness too! (is this normal?)
i then checked continuity from the yellow/white wire of the vss harness and the yellow/blue wire of the speedometer harness and get full continuity- i checked all the other pins on the speedometer harness and get no readings...
I then did a dc voltage test...
With ign on and mutimeter on dc10, speedometer harness connected, i grounded the multimeter and the positive end connected to the yellow/white wire of the vss plug, i get a voltage reading of about 7v..
I pulled the vss assembly out of the transmission and inspected the gear teeth of the vss housing and it looks good
i inspected the plastic gear in the transmission that is visible through the hole where the Vss mounts and i didnt feel any missing teeth..
I feel drag on the vss when i turn it, not much drag on the gear in the trans..
1994 Nissan truck XE
1995 Civic VX (53mpg)
1995 240SX SE
2000 Infiniti G20 touring
1995 Civic VX (53mpg)
1995 240SX SE
2000 Infiniti G20 touring