put all new filters, oil, cleaned the vent took oil sample fired her up when he oil warmed to 120 degrees it slowed rightdown . took her to the dealership. any ideas only thing left is the hoses. going to flow rate it tommorrow if it's not rainng
I know you already replaced the motor, I read somewhere the other day about a problem with the fan motor being in a bind with the fan shaft. This caused the motor to be less effecient and not able to achieve high speeds. The fix was to loosen the bolts holding the motor and let it fall into place. I thought this was only an issue from the factory. Just another idea.