Washer Pump Inop
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Senior User
Joined: Jun 2009
Posts: 286
Likes: 0
From: PA, USA
Washer Pump Inop
OK, I have a 93 F250 4x4 with the 5.8. This is a small thing, but it's annoying the heck out of me. The washer pump won't spray when I press the button. I thought maybe it was just the so I put a new one on and still nothing. I checked the voltage at the pump connections and there is a very small amount of voltage (0.1 to 0.3) scrolling on the meter, but it stays the same when the button is pushed. I can hear the relay behind the glove box clicking when I press the button and the wipers go as they should, but no spray. Someone suggested that I take the switch apart and clean the connections. I tried that yesterday and still nothing.
Any suggestions? Thanks!
Any suggestions? Thanks!
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
I know that on mine the wires just before the plug into the pump had corroded and failed inside the insulation.
Fortunately there was enough slack in the harness to cut it back and reattach the plug.
Not a definitive answer, but something to check....
If you have a testlight with a pin type probe you might pierce the insulation on the hot side (say 6" up) and still be able to see it light from inside the cab as you press the switch.
Fortunately there was enough slack in the harness to cut it back and reattach the plug.
Not a definitive answer, but something to check....
If you have a testlight with a pin type probe you might pierce the insulation on the hot side (say 6" up) and still be able to see it light from inside the cab as you press the switch.
Cargo Master
Joined: Jul 2009
Posts: 2,541
Likes: 54
From: Des Moines
Have you checked to see if it's drawing from the reservoir tank? Just pull the hoses that lead to the sprayers off at the pump and see if it's drawing from the tank. If it is, then it's possible there's a blockage after the pump or the hose[s] could have collapsed [which I don't really see with this type of hose] and it's preventing the delivery of the fluid to the sprayers.
Once you determine if the pump is drawing, reattach the hose to the pump and pull it at the sprayers. If you're still getting fluid, then the sprayers are clogged. If you have an air compressor with a "gun" attachment, shoot some compressed air thru them in short bursts. If that doesn't do it... find new sprayers.
Once you determine if the pump is drawing, reattach the hose to the pump and pull it at the sprayers. If you're still getting fluid, then the sprayers are clogged. If you have an air compressor with a "gun" attachment, shoot some compressed air thru them in short bursts. If that doesn't do it... find new sprayers.
Cargo Master
Joined: Jun 2002
Posts: 2,033
Likes: 32
From: Aurora,Colorado
If he isnt getting 12DCV, when the washer button is depressed ,at the wiring connection to the pump-that is probably the source of the trouble.
Try placing one side of the Volt Meter to a good ground and see if you see 12DCV then-it may just be a bad ground.If the ground is bad-trace the wire back and try to determine where one side should be grounded. When corrected-then:
Listen for sound of the pump running. Verify that the pump is pumping by opening the washer hose between the jets and the pump.
And like some else also said- after correcting the electrical problem- check and make sure that the sprayers on the cowl are open-I use a small safety pin and run it thru the sprayer jets to make sure that they are still open.Surprisingly-about 50 percent of the time-the dang jets are closed up with junk and preventing the water from spraying out onto the windowshield.
Try placing one side of the Volt Meter to a good ground and see if you see 12DCV then-it may just be a bad ground.If the ground is bad-trace the wire back and try to determine where one side should be grounded. When corrected-then:
Listen for sound of the pump running. Verify that the pump is pumping by opening the washer hose between the jets and the pump.
And like some else also said- after correcting the electrical problem- check and make sure that the sprayers on the cowl are open-I use a small safety pin and run it thru the sprayer jets to make sure that they are still open.Surprisingly-about 50 percent of the time-the dang jets are closed up with junk and preventing the water from spraying out onto the windowshield.
Thread Starter
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Senior User
Joined: Jun 2009
Posts: 286
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From: PA, USA
Thanks for the suggestions, guys!
I checked the wires to the pump and they are good for quite a ways back from the plug.
As far as it drawing from the tank, I never got that far. When I plugged in the new pump (think I neglected to mention the new pump I tried in my first post), I tested it before I installed it in the reservoir. I laid the free pump across the fender, reached in the truck and hit the button while listening and looking for it to activate. It did the same thing as the old pump; nothing.
While I had the whole thing unplugged I blew through the hose and a little fluid came out the sprayers on the hood, so I think those are OK. I'll try the safety pin idea if and when I get the thing pumping, just to make sure they are good and free.
I'm going to make time tomorrow to try the things suggested by phoneman91 (interesting name, by the way) with the tester. I will get back with you when I have some results (or lack of). Any suggestions if the ground checks out?
I checked the wires to the pump and they are good for quite a ways back from the plug.
As far as it drawing from the tank, I never got that far. When I plugged in the new pump (think I neglected to mention the new pump I tried in my first post), I tested it before I installed it in the reservoir. I laid the free pump across the fender, reached in the truck and hit the button while listening and looking for it to activate. It did the same thing as the old pump; nothing.
While I had the whole thing unplugged I blew through the hose and a little fluid came out the sprayers on the hood, so I think those are OK. I'll try the safety pin idea if and when I get the thing pumping, just to make sure they are good and free.
I'm going to make time tomorrow to try the things suggested by phoneman91 (interesting name, by the way) with the tester. I will get back with you when I have some results (or lack of). Any suggestions if the ground checks out?
Cargo Master
Joined: Jun 2002
Posts: 2,033
Likes: 32
From: Aurora,Colorado
Thanks for the suggestions, guys!
.
While I had the whole thing unplugged I blew through the hose and a little fluid came out the sprayers on the hood, so I think those are OK. I'll try the safety pin idea if and when I get the thing pumping, just to make sure they are good and free.
I'm going to make time tomorrow to try the things suggested by phoneman91 (interesting name, by the way) with the tester. I will get back with you when I have some results (or lack of). Any suggestions if the ground checks out?
.
While I had the whole thing unplugged I blew through the hose and a little fluid came out the sprayers on the hood, so I think those are OK. I'll try the safety pin idea if and when I get the thing pumping, just to make sure they are good and free.
I'm going to make time tomorrow to try the things suggested by phoneman91 (interesting name, by the way) with the tester. I will get back with you when I have some results (or lack of). Any suggestions if the ground checks out?
If the ground is good-make sure that there is good battery. I bet that the cause is a bad ground. I also had this problem on my 92 and just had to wiggle the connection to the pump to get it to work. There was some corrosion on the plug.
Yeah- that phoneman handle. That is what happens when one works for the telephone company for over 40 years!!! The 91 refers to the year that I last got surplused by Ma Bell.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
I had the same problem with mine several years ago. It ended up being a bad connection inside the connector.
Even though it is the wrong connector, I found a GM alternator connector at A'zone that does fit and stay plugged in.
This is the GM alternator plug I found that fits. It doesn't look the same but it makes a good connection and stays plugged in.
http://cgi.ebay.com/ebaymotors/Alter...Q5fAccessories
I have a new Ford connector waiting to go on, but will leave it alone while its working.
Even though it is the wrong connector, I found a GM alternator connector at A'zone that does fit and stay plugged in.
This is the GM alternator plug I found that fits. It doesn't look the same but it makes a good connection and stays plugged in.
http://cgi.ebay.com/ebaymotors/Alter...Q5fAccessories
I have a new Ford connector waiting to go on, but will leave it alone while its working.
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Thread Starter
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Senior User
Joined: Jun 2009
Posts: 286
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From: PA, USA
If the ground is good-make sure that there is good battery. I bet that the cause is a bad ground. I also had this problem on my 92 and just had to wiggle the connection to the pump to get it to work. There was some corrosion on the plug.
Yeah- that phoneman handle. That is what happens when one works for the telephone company for over 40 years!!! The 91 refers to the year that I last got surplused by Ma Bell.
Yeah- that phoneman handle. That is what happens when one works for the telephone company for over 40 years!!! The 91 refers to the year that I last got surplused by Ma Bell.
Thanks again for the suggestions and the confidence. I will give this all a shot today.
Small world phoneman. I can see how that would stick. I am in the army and install phones for a living as well. Started out the tactical type, now I'm working more of a civilian type gig.
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Cargo Master
Joined: Jun 2002
Posts: 2,033
Likes: 32
From: Aurora,Colorado
Thanks again for the suggestions and the confidence. I will give this all a shot today.
Small world phoneman. I can see how that would stick. I am in the army and install phones for a living as well. Started out the tactical type, now I'm working more of a civilian type gig.
Small world phoneman. I can see how that would stick. I am in the army and install phones for a living as well. Started out the tactical type, now I'm working more of a civilian type gig.
I was a dedicated Comm Tech to Dyess AFB, Abilene Tx, for over two years in the 80's. It is was interesting working with the military. We were the training center for the B1B bomber starting in 1985.
Good luck with the washer pump.
