coolant loss/auxilliary water pump
pjrose at frontiernet.net
Fri Feb 18 10:19:46 EST 2005
A few days ago in a thread about coolant-level warnings, I mentioned
that my car had recently started to have significant coolant loss.
After studying the tell-tale signs it became obvious that the source
(or _a_ source) was seepage from the auxilliary (after-run) water
pump. Fortunately I had a new pump on hand, and the replacement was
about the easiest job I've ever done on this car. About 10 minutes.
When I examined the old pump, I expected there to be some evidence of
"cracking" in the plastic housing --somewhere near the hose nipples.
I pulled on the nipples (ouch!) anticipating that one of them might
snap off--but no. What happened was that the entire pump housing
separated from the motor. So it appears that the seepage was from the
"joint" between the plastic housing and the metal pump. Is this
typical? I expected the sort of stress crack as in the radiator
nipple failure mode. Anyway, I expect that the old pump was the
original, in which case the failure came at about 150K miles. That's
one less component to worry about now--until 300K comes along :-)
mailto:pjrose at frontiernet.net
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