Clarification of Coolant sender and sensor

2WDNICK · Jul 28, 2015

Ive got a 95 XJ, I have a sensor for the computer on the thermostat housing and ive got a sender for my aftermarket temp gauge on the head by the firewall.
After 1996 where is the temp sender for the gauge go?
Is the sensor on the thermostat housing after 1996 for the temp gauge and the computer?
Ive seen a tee installed on the thermostat housing for the sensor and the sender but it doesnt look like they sit low enough into the flow of coolant.

Thanks.

ehall · Jul 28, 2015

97+ gauges are fed by the ECM, which uses the coolant sensor in the thermostat housing. One sensor provides all the data.

TRCM · Jul 29, 2015

96 the temp sensor for the gage is on the head by the firewall

2WDNICK · Jul 29, 2015

If you have a 97 or later where do you install an aftermarket temp sender for a temp gauge?

ehall · Jul 29, 2015

The place that is going to be the closest to the computer sensor is in the thermostat housing. There is a little flat spot right on the front of it, drill and tap there. There's also a block drain plug on the drivers side of the engine under the manifold, below the freeze plugs, but the wire will melt from the exhaust heat.

Euology101 · Jul 29, 2015

ehall said:
The place that is going to be the closest to the computer sensor is in the thermostat housing. There is a little flat spot right on the front of it, drill and tap there. There's also a block drain plug on the drivers side of the engine under the manifold, below the freeze plugs, but the wire will melt from the exhaust heat.

To the OP, if you don't like drilling and tapping, you can purchase this as well:http://www.hesco.us/products/7969/t...hi-flow-thermostat-housing-hfth2#.VbkKu_lVhBc

Exactly the same as the suggestion above, comes with a 1/8" NPT hole for a 2nd sensor, on the flat spot. - Just an FYI, I used this on a previous Wrangler, and had to elbow out 90 degrees, and install the new sensor in the elbow due to clearance at the fan shroud.

2WDNICK · Aug 5, 2015

Will the sensor stick far enough into the stream of water to get an accurate reading from the stock Thermostat housing?

Would that high flow housing cause any bottleneck if your not using anything else on the cooling system that is not high flow?

ehall · Aug 5, 2015

2WDNICK said:
Will the sensor stick far enough into the stream of water to get an accurate reading from the stock Thermostat housing?

I don't know what sender you are using but the stock ones work fine there

Would that high flow housing cause any bottleneck if your not using anything else on the cooling system that is not high flow?

No

Clarification of Coolant sender and sensor

2WDNICK

NAXJA Forum User

ehall

NAXJA Member

TRCM

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2WDNICK

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ehall

NAXJA Member

Euology101

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2WDNICK

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ehall

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