the pumps running at different temps sounds more like a thermostat issue rather than a pump...and i know Hervey sells a bunch of different tstats...
KB
Good point. Usually the obvious answer is the correct one. Hmm, I really can't remember what thermostat I have. Another thing to have a look at this winter.
Nick A.
1988 BMW 325is
1982 DeLorean DMC-12
1989 Jaguar XJ6