> > If it's good on the highway and not around town, i don't think
> > it's a collapsing hose, since the pump is going slower around
> > town. But do speak up if i am wrong!
> I guess it would depend on how you are driving. The pump speed
> is proportional to the engine RPM, so if you are loafing along on
> the highway at 2,000 rpm in overdrive, accellerating in a lower
> gear to 4,000 or 5,000 rpm in town would spin the pump much
> faster.
He did say stop and go traffic.
> Plus, on the highway at speed you'd have much better
> flow through the radiator, so even if it was partially collapsed
> and thus the flow was restricted, the heat transfer inside the
> radiator itself would be better and could compensate.
That's true.
I think in most cases, highway good and around town bad means
airflow problems or water pump problem.
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