Engine temperature gauge

[tprman]

I am wanting to install a after market  temperature gauge on my 88 MJ 4.0. I have noticed the  factory temperature gauge hole on the back of the engine is to small to screw in the new gauge sensor. Where is a good place to mount the sensor on the engine. I would like to use the same hole as the old sensor on the back of the engine but I have not yet found a after market senor that will work..  any suggestions that might work . Thanks. 

[omega_rugal]

thermostat housing...

[tprman]

 I thought about that. But I’d have to buy a new thermostat housing .  Mine does not have a place for Temp gauge.

[Ωhm]

Block coolant drain plug. Near the ECT sensor.

[tprman]

I’ll check that out. Thanks. 

[Jeep Driver]

1 hour ago, tprman said:

I am wanting to install a after market  temperature gauge on my 88 MJ 4.0. I have noticed the  factory temperature gauge hole on the back of the engine is to small to screw in the new gauge sensor. Where is a good place to mount the sensor on the engine. I would like to use the same hole as the old sensor on the back of the engine but I have not yet found a after market senor that will work..  any suggestions that might work . Thanks. 

My Speehut sensor fits in the back of the head. 

 

What gauge/sensor are you trying to use?

[Jeep Driver]

41 minutes ago, tprman said:

But I’d have to buy a new thermostat housing

And what's wrong with buying a new one? JY for $8.00

[tprman]

Just a standard after market gauag. But I think i May have found a  thermostat housing that will work. 

[DirtyComanche]

The factory put the sending unit there for a reason.  It's the hottest part of the engine.

[omega_rugal]

the radiator, where you put the thermo switch for the efan...

[DirtyComanche]

1 hour ago, omega_rugal said:

the radiator, where you put the thermo switch for the efan...

 

That won't tell you if you're overheating from a stuck tstat.  Actually, it will only tell you if things have gone nuclear hot and the cooling system is completely saturated.