Quote:
Originally Posted by StreetTripleR
I haven't temped the heater core plumbing but the in and out are very hot to the touch. It's possible that my aux pump is broken but that only assists heat at idle and wouldn't explain my loss of heat at all rpms.
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In my W126 it did. I had zero heat at all RPMs when driving. It was the dead of winter in the teens for high temperatures when mine went out.