Percolator - Coffee Temperature

The coffee temperature should be approximately 160 degrees F after brew cycle has completed.

Coffee Not Hot Enough

Make sure to use cold tap water to brew coffee as the unit is designed to begin with cold water.
Make sure that the washer on the bottom of the pump tube is not stuck. To ensure the washer at the bottom of the pump tube is moving freely, simply shake the pump tube. This should cause the washer to jingle. If the washer is not moving on its own, it is likely stuck due to build up. Even if the washer appears to be moving, it is still possible there is buildup elsewhere.
Clean the unit with "Dip it" or "Brew Rite" cleaner.