Thread: Coolant

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OK, so I drained the coolant. It was surprisingly clean. But I had already purchased a Prestone "flush product" so I decided to use it before I put new coolant in. I changed the upper radiator hose from the universal accordion hose to the preformed hose that I got a part number for on this forum (thanks!), and installed a new thermostat. I was surprised that there was a thermostat already in the engine and it was indeed closed, not stuck open. After sealing the system back up and filling with distilled water and the "flush" product, I took it for an extended drive. After about a half hour of driving and several full throttle runs, the temp was still showing only about 140-150 degrees. Same as before. So I'd have to assume the old thermostat was working, and the new thermostat is working and the 140 degree reading is false.

So what's wrong? Bad sending unit or temp gauge?

This car has what I consider to be cheesy Dolphin gauges. They are on my list of changes, but it would be simpler and cheaper to just do the sending unit now.

Thoughts?

Thanks...


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