After replacing the stat and achieving the ideal operating temp, my heat still not up there. So, tested the aux pump by disconnecting it and applying 12v power from battery. Every time I connect (either polarity), I hear a light thunk. I expect to hear a wrrrrrr sound if its running. This tells me that its probably seized. Do you agree? What is the life expectancy on these pumps anyway?

I am wondering if it can be un-seized? Has anyone ever tried taking one of these off and opening them up to see whats making them stuck?

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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth...
2007 Honda Accord EX
2007 Honda Accord SE V6
96 C220
97 Explorer - Found Another Home
2000 Honda Accord V6 - Found Another Home
85 300D - Found Another Home
84 300D - Found Another Home
80 300TD - Found Another Home
Previous cars:
96 Caravan
87 Camry
84 Cressida
82 Vanagon
80 Fiesta
78 Nova
Ford Cortina
Opel Kadet
68 Kombi
Contessa