Coolant temp sensor
 

I have a 94 cherokee country with the HO 4.0 liter and my temp gauge fluctuates when I am on and off the throttle. Does not use coolant or get hot but gauge is not reading right. I've looked at a couple other threads and I saw there are 2 sensors right? I replaced the thermostat and sensor on housing and....no dice! I bought sunpro temp gauge if all else fails

....the temp sensor is the one at the back of your block

Where exactly on the block? And what is the one on the housing.. Control sensor?

And do both sensors look the same?

the one on the housing is coolant temp sensor the one on the head drivers side rear is coolant temp sender

Thanks man where would be the best place to pick one up?

Yes the one all the way at the back of the cylinder head on the drivers side is the sending unit. It's only job is to show the temp on the dash gauge. I've broken that thing like 3-4 times working in that area since it's a brittel hard plastic on top. But the good thing is you can just crazy glue it back together and it works. :)

i tried every auto parts store here everybody said gotta order it so had to order

Right on! Lol cheap and easy! That's the way I like it! Haha I'm not around my jeep now but I'm almost sure that's the problem. I still might just put a mechanical gauge on it

there is no mechanical water temp gauge just gauge or light

Until you tighten Down to hard and snap off the gage at the last top thread...i left it in there not worth my time

So the sunpro temp gauge won't work?

Post a pic of the part.

Which part? Here is the new temp gauge

Attachment 64780

That oughta work right? Idk if the tip at the end will be too long but I think that would be the only issue. I'll just mount the gauge below the dash