I called my dealer today, and found that the '94 YJ does not have a speedo
cable. It has a speed sensor, which he says might be the reason the
speedometer reads erratically, bounces around, and sometimes does not read
at all.

Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
where it is and if it is easy or hard to replace?

Tom

 

If the sensor was bad, it would normally not work period. Most
electronics up and quit, they don't give fits first.

You are now describing a dirty connection on the plug for the speed
sensor. A contact cleaner spray does wonders for these computer signal
plugs and sockets. WD40 will work for this but a real contact cleaner
is better. I also use dielectric grease on the rubber skirt seal the
plugs have to help keep them clean.

I don't know for sure, but I think I remember someone saying it was down
on the side of the t-case.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

mabar wrote:
>
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom

 

If the sensor was bad, it would normally not work period. Most
electronics up and quit, they don't give fits first.

You are now describing a dirty connection on the plug for the speed
sensor. A contact cleaner spray does wonders for these computer signal
plugs and sockets. WD40 will work for this but a real contact cleaner
is better. I also use dielectric grease on the rubber skirt seal the
plugs have to help keep them clean.

I don't know for sure, but I think I remember someone saying it was down
on the side of the t-case.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

mabar wrote:
>
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom

 

If the sensor was bad, it would normally not work period. Most
electronics up and quit, they don't give fits first.

You are now describing a dirty connection on the plug for the speed
sensor. A contact cleaner spray does wonders for these computer signal
plugs and sockets. WD40 will work for this but a real contact cleaner
is better. I also use dielectric grease on the rubber skirt seal the
plugs have to help keep them clean.

I don't know for sure, but I think I remember someone saying it was down
on the side of the t-case.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

mabar wrote:
>
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom

 

I had a bad VSS (Vehicle Speed Sensor) on my 91 YJ and my speedometer still
worked fine. For me, when I would push in the clutch when coming to a stop,
the engine rpm's would drop way down to where the engine would almost die
and sometimes the vehicle would shudder and then usually the rpm's would go
back to normal just before it died. It is located on the tcase, I belive
it was where the speedo cable plugs in.


Jeff Hendron 2003 Jeep Wrangler Rubicon
MatrixOne Support Skyjacker 4" lift, JKS Disconnects
Agilent Technologies Fabtech Front Bumper, Rock Krusher Rear Bumper
Co Springs, Colorado Rock Krusher Rock Rails, Custom Swingout Tire Carrier
(719) 531-4319 33x12.50 Goodyear MTR's, Mickey Thompson Classic Lock Wheels
jeff_hendron@agilent.com Bush Whacker Fender Flares, Warn XD9000i Winch

Yamaha WR250ZF


: If the sensor was bad, it would normally not work period. Most
: electronics up and quit, they don't give fits first.

: You are now describing a dirty connection on the plug for the speed
: sensor. A contact cleaner spray does wonders for these computer signal
: plugs and sockets. WD40 will work for this but a real contact cleaner
: is better. I also use dielectric grease on the rubber skirt seal the
: plugs have to help keep them clean.

: I don't know for sure, but I think I remember someone saying it was down
: on the side of the t-case.

: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's

: mabar wrote:
:>
:> I called my dealer today, and found that the '94 YJ does not have a speedo
:> cable. It has a speed sensor, which he says might be the reason the
:> speedometer reads erratically, bounces around, and sometimes does not read
:> at all.
:>
:> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
:> where it is and if it is easy or hard to replace?
:>
:> Tom

 

I had a bad VSS (Vehicle Speed Sensor) on my 91 YJ and my speedometer still
worked fine. For me, when I would push in the clutch when coming to a stop,
the engine rpm's would drop way down to where the engine would almost die
and sometimes the vehicle would shudder and then usually the rpm's would go
back to normal just before it died. It is located on the tcase, I belive
it was where the speedo cable plugs in.


Jeff Hendron 2003 Jeep Wrangler Rubicon
MatrixOne Support Skyjacker 4" lift, JKS Disconnects
Agilent Technologies Fabtech Front Bumper, Rock Krusher Rear Bumper
Co Springs, Colorado Rock Krusher Rock Rails, Custom Swingout Tire Carrier
(719) 531-4319 33x12.50 Goodyear MTR's, Mickey Thompson Classic Lock Wheels
jeff_hendron@agilent.com Bush Whacker Fender Flares, Warn XD9000i Winch

Yamaha WR250ZF


: If the sensor was bad, it would normally not work period. Most
: electronics up and quit, they don't give fits first.

: You are now describing a dirty connection on the plug for the speed
: sensor. A contact cleaner spray does wonders for these computer signal
: plugs and sockets. WD40 will work for this but a real contact cleaner
: is better. I also use dielectric grease on the rubber skirt seal the
: plugs have to help keep them clean.

: I don't know for sure, but I think I remember someone saying it was down
: on the side of the t-case.

: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's

: mabar wrote:
:>
:> I called my dealer today, and found that the '94 YJ does not have a speedo
:> cable. It has a speed sensor, which he says might be the reason the
:> speedometer reads erratically, bounces around, and sometimes does not read
:> at all.
:>
:> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
:> where it is and if it is easy or hard to replace?
:>
:> Tom

 

I had a bad VSS (Vehicle Speed Sensor) on my 91 YJ and my speedometer still
worked fine. For me, when I would push in the clutch when coming to a stop,
the engine rpm's would drop way down to where the engine would almost die
and sometimes the vehicle would shudder and then usually the rpm's would go
back to normal just before it died. It is located on the tcase, I belive
it was where the speedo cable plugs in.


Jeff Hendron 2003 Jeep Wrangler Rubicon
MatrixOne Support Skyjacker 4" lift, JKS Disconnects
Agilent Technologies Fabtech Front Bumper, Rock Krusher Rear Bumper
Co Springs, Colorado Rock Krusher Rock Rails, Custom Swingout Tire Carrier
(719) 531-4319 33x12.50 Goodyear MTR's, Mickey Thompson Classic Lock Wheels
jeff_hendron@agilent.com Bush Whacker Fender Flares, Warn XD9000i Winch

Yamaha WR250ZF


: If the sensor was bad, it would normally not work period. Most
: electronics up and quit, they don't give fits first.

: You are now describing a dirty connection on the plug for the speed
: sensor. A contact cleaner spray does wonders for these computer signal
: plugs and sockets. WD40 will work for this but a real contact cleaner
: is better. I also use dielectric grease on the rubber skirt seal the
: plugs have to help keep them clean.

: I don't know for sure, but I think I remember someone saying it was down
: on the side of the t-case.

: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's

: mabar wrote:
:>
:> I called my dealer today, and found that the '94 YJ does not have a speedo
:> cable. It has a speed sensor, which he says might be the reason the
:> speedometer reads erratically, bounces around, and sometimes does not read
:> at all.
:>
:> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
:> where it is and if it is easy or hard to replace?
:>
:> Tom

 

The speed sensor plugs mechanically into the transfer case near the output
shaft. It has an electrical connector that plugs into the nearby wire loom.

Your speedo is more likely filled with dirt and grime and is sticking, or
the ground to the dashboard electronics is intermittant.





"mabar" <xyzz4567@HotPop.com> wrote in message
news:42386e1c$1_1@newsfeed.slurp.net...
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom
>
>

 

The speed sensor plugs mechanically into the transfer case near the output
shaft. It has an electrical connector that plugs into the nearby wire loom.

Your speedo is more likely filled with dirt and grime and is sticking, or
the ground to the dashboard electronics is intermittant.





"mabar" <xyzz4567@HotPop.com> wrote in message
news:42386e1c$1_1@newsfeed.slurp.net...
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom
>
>

 

The speed sensor plugs mechanically into the transfer case near the output
shaft. It has an electrical connector that plugs into the nearby wire loom.

Your speedo is more likely filled with dirt and grime and is sticking, or
the ground to the dashboard electronics is intermittant.





"mabar" <xyzz4567@HotPop.com> wrote in message
news:42386e1c$1_1@newsfeed.slurp.net...
> I called my dealer today, and found that the '94 YJ does not have a speedo
> cable. It has a speed sensor, which he says might be the reason the
> speedometer reads erratically, bounces around, and sometimes does not read
> at all.
>
> Anybody ever replace the speed sensor on a '94YJ? Any hints or ideas as to
> where it is and if it is easy or hard to replace?
>
> Tom
>
>