Quote:
Originally Posted by MercFan
I just went out to the car to test out the Aux water pump - I unplugged what I THINK is the aux pump plug - can someone verify that that's the proper plug? I measured resistance across it - it measured abou 5.5 - 6.5 Ohms.
When I put 12V across the two prongs I got nothing... I got nothing when I reversed the polarity. If this is the right plug then I think my Aux pump is dead.
Strange that there is continuity in the wire (non-zero resistance) but the pump refuses to operate...
Looks like I have a seized Aux pump... any other thoughts before I undergo the medieval Teutonic torture of pump replacement between the firewalls?!
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Yes. That is the aux water pump plug. If you want, you may keep it unplugged. This will not hurt anything. You just will not have the hottest heat in the world at idle. I live in NE Louisiana and it really never gets that cold here. This morning it was 29 degrees. But what I am getting at is that I kept the aux water pump unplugged for quite a while after I installed my new CCU because that pump is pretty pricey and I noticed no measureable heat loss in our climate here. Later in the spring when I changed my coolant, I then replaced the pump since I had the coolant drained anyway.
I drove December thru April with the pump unplugged with no ill effect.