Water pump stealth failure?

[Richard J Lebens]

did you change the gage sending unit?  Is it one of those MFTSs?  Isn't
180 degrees good?

--- Jim Jordan <j8k3sp00n at gmail.com> wrote:

> Hi,
> 
> I still have indicated overheating on my 5KT.  I've replaced
> virtually
> everything in the cooling system except the water pump.  It was
> replaced
> about 20K miles ago along with the TB.  I suspect that the garage
> that was
> supposed to replace it didn't or used a junk one.  The one that was
> in there
> prior to that "work" was a lifetime warrantied Graf which doesn't
> have a
> good rep in some quarters.
> 
> Does anyone know a way to check the water pump short of removing it
> and
> inspecting it?  Obviously, if I remove it, I might as well do the TB
> in the
> process, which I don't want to do now.  
> 
> I drove the car on the freeway today about 50 miles total, ambient
> temp was
> 90+ F, and the temp gauge sat just under the top mark when driving at
> highway speeds.  I measured the coolant temp in the expansion tank
> just
> before shutting down at ~180 deg F.  The fan came on during driving
> and shut
> down shortly after I shut the engine down.
> 
> Thanks for your ideas. 
> 
> Cheers!
> 
> Jim Jordan
> 
> 
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