View Single Post
Old 10-31-2007, 10:01 PM
ramjensen ramjensen is offline
Registered User
Join Date: Jul 2006
Posts: 79
Auxiliary water pump was the culprit?

Unplugged the aux water pump as you said, Brian. Problem stopped immediately. I assume that my ammeter readings were somehow incorrect and the aux water pump is in fact faulty. It must be drawing too many amps and activating some sort of protection circuit that shuts down the system to avoid frying the pushbutton unit? Why did the problem happen only with cool outside temps? Does the aux pump come into play only when it's cool outside? I assume replacing the aux pump is the thing to do, unless this test reveals something else is at fault? Thanks for the help.
87 300D 162,000 miles: It's not just a car, it's an adventure!

Last edited by ramjensen; 11-14-2007 at 08:46 PM.
Reply With Quote