Chris01XJ

So i hop in the jeep to go run a errand, when i went to crank it up it just clicked like my battery was dead (just replaced it btw) so tried again and it started right up, but all my gauges went flat and the odometer is saying "no bus".......did i blow a fuse?

Caish

Fuse, or you got a bad ground someplace.

tjwalker

A NO BUS with the engine running fine is usually a connection on the dash cluster or a related ground. Disconnecting it, cleaning it with a spray of electrical contact cleaner, applying a dab of dielectric grease and reconnecting usually resolves.

Here is MORE information on the "other" way that you can see NO BUS
------------------------------------------------------------

A NO BUS on the dash along with a NO-START condition is usually one of the 5 volt management sensor shorting out.

98% of the time, that sensor is the crankshaft position sensor. Theoretically, any of the 5 volt sensors can do this, but the crank sensor is way more prone to this than the others.

Try this. Unplug the crank sensor. You can do it either at the connector on the sensor itself on the bellhousing, or at the connector under the hood near the firewall/#6 injector.

After unplugging the crank sensor from the computer bus, look to see if the NO BUS is gone. If it is, you have proof positive that the crank sensor is the culprit and you should replace it.

freegdr

batt conn check them again