Aftermarket coolant temp sensor?

[jchevy]

Im going fully buggy with my cherokee and going to be running aftermarket gauges. Does my computer need the coolant temp sensor in the t-stat housing? How/Where can I hook up an aftermarket coolant temp sensor?

 

[ericfx1984]

what year is your XJ?

 

[Super mud]

91+ (I'm supposing since u have a sensor in the tstat housing) That sensor sends info to the computer which gives resistance and also tells the computer when to switch the efan on. So, I guess its important. I'm not sure if theres another sensor for you gauge

I have a Renix so I have a temp sensor in the block and one in the head which sends to the gauge. I beleive you also have one in the block so I'm not sure where this is going now but were getting somewhere

 

[jchevy]

It is a 93. In a google search it looks like the sensor in the rear of the head is used for the gage. Can anyone verify that?

 

[ChiXJeff]

Yup. Sensor in the rear of the head is for the dash only. Idiot lights have a simple go/no-go sender, full gauge panels have a ranging sensor. The ECM reads temp from a sensor at the front.

Edit: I have a 94. Your 93 should be darned near identical.

 

[jchevy]

Ok great! Now that that is figured out does the computer us the oil pressure for anything?

 

[techno1154]

Ok great! Now that that is figured out does the computer us the oil pressure for anything?

No.