 Window washer pump doesn't work, Do these fail? |
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| 914 RZ-1 |
 Mar 8 2019, 08:22 PM
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#1
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Porsche Padawan  Group: Members Posts: 684 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California  |
The pump for the washer fluid doesn't work. I installed it two years ago and it has not been used while I painted the car.
I checked the fuses, the wiring (at the fuse box and the pump and switch), and the connections. The switch I installed has a light on it, so I know it works. The pump makes no noise except for a click when I engage the switch. I have the ignition on and even tried it with the engine running, the wipers on, the lights on. Could the motor be bad? I bought it new. |
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| Dave_Darling |
Mar 8 2019, 10:59 PM
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914 Idiot Group: Members Posts: 15,066 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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The stock four-cylinder doesn't have a pump. The car used air pressure from the spare tire to pressurize the reservoir.
Any electric pump would be an add-on. If you have one, you will have to figure out how it was added and where the wires and such go. --DD |
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| Valy |
Mar 8 2019, 11:40 PM
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#3
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
QUOTE(914 RZ-1 @ Mar 8 2019, 06:22 PM)  The pump for the washer fluid doesn't work. I installed it two years ago and it has not been used while I painted the car. I checked the fuses, the wiring (at the fuse box and the pump and switch), and the connections. The switch I installed has a light on it, so I know it works. The pump makes no noise except for a click when I engage the switch. I have the ignition on and even tried it with the engine running, the wipers on, the lights on. Could the motor be bad? I bought it new. Assuming you are talking about an electric pump that once worked. Most wipers pumps need to be mounted under the reservoir low water level and with the pipe inlets down. This is in order to always have water to pump and cool and to never sip water through the bearings into the electric motor. |
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| porschetub |
Mar 9 2019, 01:07 PM
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#4
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Advanced Member Group: Members Posts: 4,759 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(914 RZ-1 @ Mar 9 2019, 03:22 PM) The pump for the washer fluid doesn't work. I installed it two years ago and it has not been used while I painted the car. I checked the fuses, the wiring (at the fuse box and the pump and switch), and the connections. The switch I installed has a light on it, so I know it works. The pump makes no noise except for a click when I engage the switch. I have the ignition on and even tried it with the engine running, the wipers on, the lights on. Could the motor be bad? I bought it new. As you have a separate switch you can discount the wiper switch being faulty,sounds like you installed a relay and that's the clicking you can hear,appears the pump may be stuck,try transposing the wires and run it backwards it may free up. If no luck you could jumper you relay and see if the pump runs,after that I'am out of idea's,good luck. |
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| 914 RZ-1 |
Mar 10 2019, 06:18 PM
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#5
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Porsche Padawan Group: Members Posts: 684 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
Assuming you are talking about an electric pump that once worked.
Most wipers pumps need to be mounted under the reservoir low water level and with the pipe inlets down. This is in order to always have water to pump and cool and to never sip water through the bearings into the electric motor. Yes, it worked fine before. I thought maybe since it was sitting in froze up. I installed it as you describe: under the reservoir and with the hose inlets down. Thanks for pointing that out. It confirms I installed it correctly. That's one thing I needed to know. (IMG:style_emoticons/default/beerchug.gif) As you have a separate switch you can discount the wiper switch being faulty, sounds like you installed a relay and that's the clicking you can hear, appears the pump may be stuck, try transposing the wires and run it backwards it may free up. If no luck you could jumper you relay and see if the pump runs,after that I'm out of idea's, good luck. I did not install a relay. I just wired it to the fuse board on a free fuse. It worked fine before. I will try switching the wires, thanks. This is the kind of info I was looking for. (IMG:style_emoticons/default/beer.gif) |
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| Chris914n6 |
Mar 10 2019, 08:12 PM
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#6
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Jackstands are my life. Group: Members Posts: 3,424 Joined: 14-March 03 From: Las Vegas, NV Member No.: 431 Region Association: Southwest Region |
Dry soap gets sticky. Soak it in some water for a day and try again.
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| 914 RZ-1 |
Mar 14 2019, 11:33 AM
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#7
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Porsche Padawan Group: Members Posts: 684 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
As you have a separate switch you can discount the wiper switch being faulty,sounds like you installed a relay and that's the clicking you can hear,appears the pump may be stuck,try transposing the wires and run it backwards it may free up.
If no luck you could jumper you relay and see if the pump runs,after that I'am out of idea's,good luck. This worked, thanks! (IMG:style_emoticons/default/piratenanner.gif) I had to turn the switch off and on a few times to break it loose. |
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