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Old 08-27-2013, 05:10 AM   #1
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Please read! Speedometer problem!! Help!!!

I have a 1994 4.0L Jeep Wrangler YJ

The speedometer will only do 30mph NO MATTER WHAT I DO!

If the engine is off it will go down to zero.. But when I go it goes STRAIGHT to 30mph! Odometer-Tach-EVERYTHING works besides the speedometer!

With the speedometer-

I have taken it all apart..

Made sure all connections were good.

Plugged it into the connector with the needle exposed.

I started driving- It went straight to 30mph..

WHILE DRIVING- I tried to force the needle passed 30mph by lightly pushing it forward.. But when I let it go.. It bounced RIGHT back to 30mph.

So I tried to push it below 30mph- it bounced right back up to 30mph

I tried to pull the needle off and re apply it when engine was on and at a stand still.. Then I put it in gear and started moving and it went right to 30mph.

I tried to disconnect the battery- Reconnected and started driving- Went right to 30mph

I tried to spin the needle completely around to the right- then to the left- and still it went right to 30mph no matter what I did.

Once again- the odometer works fine- the tach works fine- the engine runs well. The jeep knows how fast it is going but for some reason won't let me know..

This is a 1994 4.0 Jeep YJ- The speedometer from what I read is all electric. (no cable)

I checked all the grounds I could see and all are snug- No corroded wires- No loose connections!

WTF!!!!!!??????!!!!!??????!!!!!????

Please don't reply with guesses.. If you have seen this issue or have had this issue before and have FIXED IT. PLEASE HELP!

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Old 08-27-2013, 09:07 AM   #2
jokerchief462

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94 has a VSS at the T-Case. Variable Speed Sensor. It takes the signal and sends it to the speedo. Search VSS problems

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Old 08-27-2013, 12:25 PM   #3
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It's not the VSS
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Old 08-27-2013, 12:28 PM   #4
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Quote:
Originally Posted by jokerchief462 View Post
94 has a VSS at the T-Case. Variable Speed Sensor. It takes the signal and sends it to the speedo. Search VSS problems
x2...If the sensor is working, then just get a new cluster
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speed control , speed sensor , speedo gear , speedometer issues , speedometer problem

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