Buy a GPS. They have speedometers in them using GPS tracking. Mine shows
on the main screen along with what the speed limit is. If I go over, it
turns red
John
"wagon bob" wrote in message
My speed odometer does't work. I've replaced instrument panel twice. I also
replace V.S.S. sensor and still nothing. Some good direction would be very
helpful. Thanks
You don't mention if it's something you really want to fix correctly, or
if it's a old truck that you don't want to invest a fortune in and just
want to know how fast your going....
If it's the latter, you can as was mentioned get a gps (if you don't
have one already) that will tell you your speed. They are very accurate
and an old Garmin can even be picked up used on ebay or the such. You
wont need to update the maps on it as you are primarily interested in it
for speed.
The other option which is cheaper and better than a GPS if you have a
smart phone...Download the app "waze"....It's free, always has the
latest maps and because it's user interactive, it has my favorite
feature: Police & red light camera locations....Users hit a button when
they see a cop and it pops up on the map...every user that passes by the
same location will hit "still there" or "not there" to keep it
accurate... I know it's a bit off topic from a non working
speed-o-meter, but it kills two birds with one stone: You'll know how
fast you are going, and where the cops are that will give you a ticket
for not knowing how fast you are going.. :)
On 2/23/2016 10:18 PM, wagon bob wrote:
replying to >>>Ashton Crusher, wagon bob wrote:
Sorry for not giving you enough information. I'm new to this so please be
patient. I've got a 1990 Chevy g-20 van.My problem is that my speedometer
doesn't work. I've replace instrument cluster and the vehicle speed sensor.
Still it didn't fix the problem. If possible is their a step by step on how to
find the problem .
Sounds like a wiring problem or a computer problem. TO my limited
knowledge, the VVS sensor output goes to the computer and the computer
tells the speedometer needle what to do. So a back computer or bad
wires could muck up the process. Seems likely that the computer
*might* also be controlling the transmission shift points based on the
VSS output. What you could try is to disconnect the wires from teh
VVS at the transmission and see if that causes the transmission to act
funny. If it does, then it means the VSS signal, when the VSS is
connected, is getting to the computer and it's able to do what it
needs to to control the transmission. That would leave you looking
for some break in the wiring between teh computer and the speedometer,
assuming your new speedo head is good. If disconnecting it doesn't
change transmission operation then perhaps all the VSS is used for is
to drive the speedo and you still won't know if it's wring or
computer.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.