Is your Elanden on a GM P-30 chassis?. If so, the temperature gauge is likely faulty. I have found this to be the case on two P-chassis motorhomes with the factory dashboard. Even though the gauges seem to operate correctly, the temperature displayed was 20-25 degrees lower than from either an aftermarket gauge or a Scan Gauge.
One gauge began showing the extreme temperature similar to what you see, but with no other symptoms. When it began flickering between 250 and 0 degrees, I replaced it with the aftermarket gauge. Your 1990 chassis doesn't have an OBD2 connector, and won't operate a Scan Gauge, so I suggest installing an aftermarket gauge and sending unit. Around $50 at any auto parts store.
Originally Posted by bill06447
Is it really running hot or is the gage faulty? First question that needs to be answered.