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jim

wrote:
On Sat, 31 Oct 2015 17:29:44 -0500, "Terry Coombs"
wrote:

wws wrote:
Is the hole in that valve as big as the heater hose ID ?
Try pulling the hose and starting it to check for flow.
Might try bypassing the valve any way - winter is almost here.
Hope your tests don't point to the pump.
ww

I hope not too , but if that's the problem I'll fix it . I have my doubts
, all indications are that there is some foreign matter blocking a passage
or fitting . The wife's assessment for today is "Better than it was but not
as hot as it should be." .
As stated before, bypass the valve and see what happens. A bad pump
would almost certainly result in a very quick overheat incident. It
has every time it has happened to me. (twice on my own and 2 or 3
customer vehicles)

I would say it is the thermostat.
Block off flow to the radiator and there
will be more heat from the heater than you
know what to do with.