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Old 02-02-2007, 05:32 PM
rrgrassi's Avatar
rrgrassi rrgrassi is offline
mmmmmm Diesel...
Join Date: Jun 2006
Location: Royse City Tx
Posts: 4,927
Originally Posted by Jeremy5848 View Post
If the CCU is undamaged now, leaving the aux water pump disconnected will not harm the CCU. But as has been said, whatever caused the pump to fail could also have damaged the CCU.

In my case, failure of the pump (during a PO's ownership) caused several traces on the PC board to fry. Someone had done a rather sloppy repair, which I cleaned up. I assume that the pump was replaced at that time but admit I haven't checked it other than measuring the current draw.

Rrgrassi, have you measured the current draw of your pump? It would be interesting to compare my 0.9 Amp to whatever yours draws. A larger initial surge is certainly one reason why mine will eventually blow a 1 Amp fuse but yours does not. Then again, my pump could have been replaced years ago and is again getting old.
Jeremy, actually, I have not done that yet. Now I'm curious...I'll try to do that this weekend and post the finding.

70's SPM #5608 Fairmont A-4 MOW car

06 VW Jetta TDI 290K miles

91 W124 300D Turbo replaced. 188K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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