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Hi All!
I have recently purchased a 1985 300TD (222K mi.) that seems to have the common semi-kinda-sorta-overheat problem. The engine temperature generally settles around 95C-100C per the dash gauge. I blasted the parts cannon since I wasn't sure of some of the cooling system history, and the gauge reading didn't budge an inch. I've reviewed a ton of threads regarding this issue, but I'm looking for a sanity check before I continue troubleshooting... Do you folks think this temp gauge reading is accurate vs what I'm measuring with my IR thermometer? See below for photos of the measurements. Here are the parts I've replaced thus far:
Some other details:
Here are some temperature measurements after bringing the engine to temp with a 15 minute romp around town: Gauge Reading: ![]() Temp sender / block area: 92.4C ![]() Cylinder Head Top Surface: 96.7C ![]() Thermostat Housing: 90C ![]() Radiator Inlet: 75.2C ![]() Radiator Outlet: 37.0C ![]() Oil Cooler Inlet: 75.8C ![]() Oil Pan: 68.6C ![]() |
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