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Old 12-30-2011, 07:38 PM   #1
xpmr5
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Windshield Washer Fluid Not Working

I have a 2007 Focus, and just a few weeks ago, my windshield fluid stopped pumping. The wipers still work, but the pump makes no noise at all. I pulled off the fender liner, went out and bought a new pump, and that didn't fix it. No noise is made from the pump. I benched tested both the pumps on a 12V jet ski battery and they both work. I checked the voltage at the wiring harness and it shows 0V off and 12.3 volts switched on. So, I know it's getting voltage to the connection, but it does not spin either pump at all. What could cause this? Should I look more into the fuse box for another fuse?


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Old 12-30-2011, 07:51 PM   #2
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You could have a true problem. But I had all the same symptoms with my car a couple of winters ago. As it turned out, the chucklehead previous owner must've diluted the windshield washer fluid with water in the summer or something. Because it froze for me in the winter and would only work on the above freezing days. Cold days... no pump noise... nothing but the wipers. I added the strongest winter warrior fluid... almost half a gallon (to bring it to full) and thought it would be good. Nope. Next cold day, same problem. Apparently water was in the line and I should've just "burned through" ALL of it but I didn't. Next time it got above freezing, I did just that. Then filled up with the winter warrior stuff and haven't had a problem since.
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Old 12-30-2011, 08:05 PM   #3
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Yeah, I was hoping it was something as simple as swapping new washer fluid, but now it seems like the problem is electrical. It's getting voltage to two good working motors, and they aren't spinning at all. The only thing I can think of is maybe the amperage is too low? I don't know, I'm not very good with electrical stuff.
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Old 12-30-2011, 11:51 PM   #4
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It was the ground wire. I have no idea where this ground wire ends. Hopefully it's just a loose or corroded connection that can be tightened or sanded down. Does anyone know where this wire ends? Thanks in advance.
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Old 12-31-2011, 03:19 AM   #5
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Two possible failure points; Washer switch contacts or poor ground wire (blk) at left A pillar.
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Old 12-31-2011, 02:31 PM   #6
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I tested the washer switch and it tested out fine between points 2,3, and 6 in regards to continuity with the switch in the on and off positions. I made a ground from the battery to the pump and it pumped as it should using the stock yellow wire as the power source. I've determined that the problem must lie in the ground wire in an area between the switch and the wiring harness from the pump.

Next, I stripped the piece of ground wire about 1 inch from the plastic harness connector for the pump and there was perfect continuity between the connector inlet and that piece of wire. However, there is not continuity between the ground wire connector and the ground on the battery with the wiper switch in either the on or off position; therefore problem must lie in that ground wire.

BC_ZX3, is the left A pillar the area between the driver side door and windshield covered by plastic trim? If so, I took that piece off. I guess now I should start testing continuity between the ground wire on there and the one on the connector for the washer pump.......?
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Old 12-31-2011, 05:05 PM   #7
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I found the culprit. The white/black ground wire was corroded and cut through where the wire met with the main wiring harness above the fender liner. Thanks to everyone who helped out.
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