turbo coolant hose under the PS pump [now heater valve]

Bernie Benz b.benz at charter.net
Mon Aug 29 17:05:54 EDT 2005

> From: Kenneth Keith <auditude at gmail.com>

> The same failure happened back in the day on my '88 5kcstq.  Now I
> need a new heater valve.  There is an all-metal one that I found at
> Napa, here:
> http://www.napaonline.com/cgi-bin/ncommerce3/ExecMacro/NAPAonline/search_resul
> ts_product_detail.d2w/report?prrfnbr=15568088&prmenbr=5806&usrcommgrpid=629505
> 94
> .
> That one doesn't have what appears to be a water temperature sensor in
> it, which my originals had.  I do like the all-metal construction of
> that Napa piece, but do I need to get the factory plastic one with the
> temp sensor in it?
Bentley is in error in that they label both this DCC (digital climate
control) WTS (water temperature sensor) and the ECU WTS as being G62.  Makes
trouble shooting very confusing!  They may well be identical sensors, not
enough T/R info on the ECU WTS to be able to tell for sure.  But the two
circuits have nothing in common.

The DCC WTS' only purpose is to shut off the hot water flow to the heater
core when not needed, so it could be located anywhere, and was not used on
some earlier models, hot water being on all the time.

Hope this helps, Improvise!


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