My temp gauge on my 87 SDL barely moves up passed the 40 degree mark after running.

So i'm guessing the sensor is bad??? How would I check that?

For the price I may just get a new one and install, where exactly is is located on this car??

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87 300SDL (work in progress) will be DD
92 Toyota Land Cruiser 4x4 monster (heavily modified)
build thread on mud http://forum.ih8mud.com/80-series-tech/288587-rotf-lt1fire.html

84 K1500 GMC Suburban 6.2 diesel motor...... dying to offer its engine to the Land Cruiser

Could be that the thermostat is stuck open. Then again, might not be.

The sensor is by the #2 injector.

Sixto
87 300D^2

If that was true i'd most likely be losing coolant.... but i'm not at all

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87 300SDL (work in progress) will be DD
92 Toyota Land Cruiser 4x4 monster (heavily modified)
build thread on mud http://forum.ih8mud.com/80-series-tech/288587-rotf-lt1fire.html

84 K1500 GMC Suburban 6.2 diesel motor...... dying to offer its engine to the Land Cruiser

Stuck open != leaking. Just means coolant circulates right from a cold start which makes it difficult to get to operating temperature.

Sixto
87 300D^2

hmmm..... maybe that's it....
On my old 98 Grand Prix I had a stuck open thermostat and the coolant was disappearing

__________________
87 300SDL (work in progress) will be DD
92 Toyota Land Cruiser 4x4 monster (heavily modified)
build thread on mud http://forum.ih8mud.com/80-series-tech/288587-rotf-lt1fire.html

84 K1500 GMC Suburban 6.2 diesel motor...... dying to offer its engine to the Land Cruiser

An engine at 40*C isn't uncomfortable to touch. Can you leave your hand on the valve cover after driving (not idling) for 20 minutes? You'll injure yourself if you touch the valve cover for more than a second if the gauge indicates 80*C.

Sixto
87 300D^2

If you have a logical explanation for coolant loss associated with an open thermostat, I would like to hear it.

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When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.

um negative good buddy..... Now I need some burn cream JK

__________________
87 300SDL (work in progress) will be DD
92 Toyota Land Cruiser 4x4 monster (heavily modified)
build thread on mud http://forum.ih8mud.com/80-series-tech/288587-rotf-lt1fire.html

84 K1500 GMC Suburban 6.2 diesel motor...... dying to offer its engine to the Land Cruiser