'82 240D

Fixed the leak. Pinhole in the water pump housing. Now...

The temp reads just over 100º when warm. Before, even with the leak, it would BARELY hit 80º, so it makes me a little nervous.

Tried a new thermostat and new temp sensor - same thing. Water pump is less than a month old (brand new, OE, turns fine, not leaking). Seems to have started after doing a hose-water flush of the cooling system with the heat switched on to get the garbage out of the heater core.

So.

Same results with two thermostats (on is Behr and one is made-in-China Napa) and with two temp sensors (old one and new one). Maybe there's still air in the system? But I drove it and topped off (only needed a few ounces), though even after draining the radiator and block (removed plug on side of block) it only took 1.5 gallons of coolant (G-05 and distilled water, 50/50). I figured there must have been some water left in the block. I dunno, just trying to think of every relevant thing.

Ideas?

Thanks again for everything!!!

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Cam

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Cam
1982 240d