Temperature sensor?

[Speedfreek]

I am trying to install a manual temp sensor and cannot find anywhere to put it. My jeep is an 83 CJ7 , i6. Every plug that I pull off of the intake has no water in it.. Where can I put it?

 

[dslywalker]

check this out.open the coolant sensor link
Mike
Table of Contents

 

[Speedfreek]

check this out.open the coolant sensor link
Mike
Table of Contents

Thanks Mike. Seems like I pulled out that sensor and there wasn't any water in there. Hmm. I'll have to check again.

 

[dslywalker]

You might not have the water routed thru there.There's a good pic in that website that shows the hoses.
Mike

 

[Speedfreek]

You might not have the water routed thru there.There's a good pic in that website that shows the hoses.
Mike

Thanks. I knew there was only air in there, and several other plugs too. I'll be working on this jeep monday and re-routing some hoses.

 

[TDHofstetter]

If you HAVE to, you could break the hose carrying hot coolant to the heater core. Install a threaded tee there with two hose barbs for the hose on the tee's two end ports. The side port can be reduced for the sending unit.

 

[Speedfreek]

If you HAVE to, you could break the hose carrying hot coolant to the heater core. Install a threaded tee there with two hose barbs for the hose on the tee's two end ports. The side port can be reduced for the sending unit.

Thanks, this is a good idea.

I was not able to find a good picture in the "table of contents" of the heater hoses. I will be able to work on it soon.

 

[dslywalker]

Look close at this pic and you will see them
Mike

 

[TDHofstetter]

...and if you click on the thumbnail to see the picture... then click the picture so it takes you to a page dedicated to the full-sized picture... then hold down the (CTRL) key on your keyboard while you roll the mouse wheel, you can zoom in right up close to see the details you wanna' see.

 

[Speedfreek]

...and if you click on the thumbnail to see the picture... then click the picture so it takes you to a page dedicated to the full-sized picture... then hold down the (CTRL) key on your keyboard while you roll the mouse wheel, you can zoom in right up close to see the details you wanna' see.

Look close at this pic and you will see them
Mike

Just wanted to say a BIG THANK YOU to you two for helping me. I just got back from my first drive in my jeep in 15yrs and it felt great. The engine is running like a sewing machine! Thank you again for your help.

 

[dslywalker]

Have fun
Mike

 

[Speedfreek]

Ok guys. I ran one heater core hose to the rear of the intake manifold and ran a hose from the front of the intake to the thermostat housing. I have my temp sensor near the front in the intake. Everything is flowing fine but my temp never gets over 130. What's wrong?

 

[TDHofstetter]

Sounds to me like the thermostat is stuck open... or missing.

 

[dslywalker]

x2 on that or someone put a real low temp stat in it.It should have about 180-195 stat in it.
Mike

 

[cooldaddy]

ok,guys,, I have been looking for a tempature sending unit on a 79 CJ4 .2, I cant find where is. an...thanks. help would be great!. thanks

 

[IOPort51]

top of the head, drivers side, way in the back.

 

[Jimbos76cj]

My coolant switch on the 84 is top of the head drivers side all the way back by the fire wall. On my current motor that's where I have my sender unit for the electric gauge.

For my fan control I have another set into the intake passages.

If your gauge is not reading more then 130 I would make sure you don't have an air pocket I the intake. Are you using the stock sender with an aftermarket gauge? Mechanical gauge? How are your gauge power and grounds?

Once the engine gets to temp feel the hoses.. If your main hoses are hot and your smaller hoses are cooler you may have a block in the heater core. I bet you have a sender/gauge issue.

 

[cooldaddy]

my engine is a 79 AMC 258 i6 / 4.2l . is it pos. the temp. sensor is just below the thermostat?

 

[Jimbos76cj]

I don't think so.. Most are in the head. Some 4.0's I think had a fitting in the thermostat housing. I think.