walker cooling systems is terrible on the MDD. The cooling fan I replaced 5 times, all radiator switches twice and the thermostat twice..the fans.grounding and grounding have been replaced or flushed....There is a solution buy a 40 dollar car 16 inch cooling fan a simple switch to the motor..problem solved runs at 205 degrees and does NOT over heat. I have spent lots of money trying the walker way...waste of money and aggravation. I got the Walker run around to boot.750 hours since new.
