Hi Guys,
I was changing my PCV (man what a mission, the previous owner..for some reason epoxied the rubber washer/o-ring down), and I noticed a sensor at the back that was hanging free. Seems the cap and lugs have been broken. Im not sure what sensor it is? I will try take a pic and post later today. On my jeep its to the right of the PCV, and closer to the firewall?

 

Hmmm i would need to see a pic of it but if the Jeep is running fine then it might be ok....

 

i would need to see a picture, its not the temp gauge sensor is it? that is on the right close to the firewall.

 

Ok here it is. What does this sensor do? Its hanging on there with a lick and a promise ;-)

 

Looks to be the temp sender for your gauge in the inst. cluster. Does it work?

 

To me it looks like a loose wire plug plugged to a head bolt....
Could be the intake air temp sensor...

 

looks like the guage temp sensor. If the vavle cover is directly left then that be it...

 

after seeing the pic I'm 100% it is the temp gauge sensor. I just replaced that one myself. is your temp gauge working?

 

Another vote for guage sending unit for temp guage or idiot light, whichever you have.

 

It seems to be working......but then again...im not sure how well its working, it doesn seem kinda low....whats the normal operating temp of these jeeps?
Is this the same gauge sensor that tells your ecu to pump,the gas cause shes cold?

 

after warming up your jeeps temp should hover around the 210 mark (straight up noon). This sensor only sends the engine temp to the gauge, not to the ecu, and nowhere else.

 

Ok cool, thanks, mine seems to be running pretty cold then, eventually it might get to the 12:00 (100deg) if im doing traffic stop start. So maybe it is broken, I think I might replace it anyway.

 

Ok guys, if its the gauge temp sensor, then if I unplug it....my guage should not work....am I correct in saying this? I drove around yesterday, getting some heat into the engine so my temp gauge was at about 11:45 position.....I disconnected it to check, and my temp gauge still works?

 

I thought the temp sensor was on or near the thermostat housing?

 

there is a temp sensor there too, but it only tells the electric fan to kick on, nothing for the temp gauge.