Wtbspeed gear

[harrahs23]

I switched gears to 4:88's and now I need the proper speed gear so my speedometer will stop bouncing all over the place and I can kill the check engine light. It's a np231. If anybody has one for sale or knows where I can get one that would be great. Thanks.

 

[DaYeep]

Regearing won't cause these symptoms. Sounds as though the connector on the sending unit where the speedo gear is located, might be loose/bad. Disconnect it, clean it and reconnect. Have you tampered with the speedo gear, as the are clocked in 120 degree settings (3 ways to install)?

 

[DaYeep]

I run 4.88's with 35's and my speedo is off about 8mph at 60, but runs fine. I have had the "bouncy speedo" and for me, it has always been a dirty connector.

 

[Serious Offroad]

http://www.naxja.org/forum/showthread.php?t=1099560

 

[DaYeep]

Again, to be more specific:
A new speedo gear can increase the true accuracy of your gauge to the true speed of your vehicle.
It will NOT stop the bouncing of the indicator or warning lights.

 

[harrahs23]

It didn't bounce around when I had 3:07 gears. Now it bounces everywhere and causes the jeep to cut out almost like a governor. I heard that I needed a 37 or 39 tooth gear. I'll clean the connection and try to reinstall. I just unplugged the sensor and now it doesn't cut out but the check engine light is on

 

[DaYeep]

The plug reseat likely fixed your speedo problem. Now download your engine faults to see why they are on. I think all this is coincidence.

 

[kastein]

Agreed. I would bet the code is a "no VSS signal" fault due to the intermittent connection.

You still could use a speedo gear to correct the speedo but there is no way for larger tires causing a check engine light via a wrong speedo gear.