Just bought this 92 xj 4 liter automatic love it so fun but needs lots of tlc
Gas gauge runs backwards u derneath looks like new fuel pump hose and some wiring tank has been pulled recently did they hook up sensor wrong ? Is it grounding ? Doesn't seem like it cause it works just ba kwards when full the empty light is on then as I use fuel it goes towards full on the gauge ??
Also speedo doesn't work i looked at trans case wiring doesn't look like it has been messed with is it electric sensor ??any help greatly appeciated

 

gas gauge sensor seems like it is just installed backwards? idk.. as for speedo, if the wiring looks good, then it might be the relay? make sure to check wiring well before tearing into dash.

 

Thanks I have had three jeeps but never had a gas sending unit out I gues I will now thanks for reply anything helps

 

well if F=E and E=F then fill up once you hit 3/4 tank haha

 

Lol ya thats the red neck fuel drill right nown. Haha

 

Just take the cluster apart and use some white out and a black sharpie and fix it up!!! hahaha

 

The PO of my 89 did the same with the sending unit on mine. For me, E means excellent and F means.... Well you get the point. I also have a yellow light that tells me that my jeep is full and happy.

 

Damn! You beat me to say that. LOL

 

As far as the speedometer, it could simply be unplugged behind the cluster.

 

Thanks the sharpie idea sounds Well I'll skip that expletive lol
Ya it's little stuff like this that keeps going Crazy that is
Speedo is a start at the beginning and trace it down I guess
Thanks for reply All E n F

 

Chances are the gauge or the sender were changed, but not together. After '90 the gauge and sender were run on an opposite signal, so to speak. Unplug the connector at the fuel tank and unplug the dash. Set your multi-meter on the little speaker symbol, touch one lead to ground and the other to the signal wire. If you don't hear a 'beep', then you don't have a short. I say this because your gauge and low fuel light are both working in unison.
Oh, don't forget to check your meter before you check the wire......