Originally Posted by Ear Mountain
it ran but only very slowly...
It unfortunately squealed some as well....
not putting out enough positive pressure?
Just been thru this. Your pump is going to fail soon. Code P0410 would come and go for a while.
Mine turned slow, had dead spots, finally fried.
Vac Solenoid above pump was sticking.
Also had one check valve (at exhaust , is the water source).) stuck open , the other stuck closed.
Loosened them up with solvent.
Take off rubber cover, if burnt smell and/or black windings, it is cooked.
You only need the pump, not the kit with extended hoses (waste of money).
Replaced bottom hose with clear PVC so I can watch for water and if found, time for new check valves.