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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Wiper Problems

Old Jan 2, 2012 | 06:07 PM
  #1  
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Wiper Problems

Ok im working on my father inlaws 1992 f150 it didnt have no low beam lights only high beam , i took the wiper - dimmer -turn signal switch apart and cleaned the contacts .Low beams work now but wipers will not turn off and washer pump is running even after i unplug the wires from switch it continues to run til i turn ign switch off .How is it running with switch unplugged ????? Ive taken it apart and cleaned everythiong and still the same
 
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Old Jan 2, 2012 | 06:42 PM
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Replace the switch?.
 
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Old Jan 2, 2012 | 06:57 PM
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Originally Posted by Encho
Replace the switch?.
X2
Common problem on these trucks.
 
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Old Jan 2, 2012 | 07:06 PM
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Thanks Guys . I just wondered why it ran after i unplugged switch
 
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Old Jan 2, 2012 | 07:41 PM
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Maybe when you cleaned it you created a bridge and it's shorting something inside, i hope you didn't put the part before you let it dry. Try a new switch, since it could be the easiest choice.
 
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Old Jan 2, 2012 | 09:15 PM
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I got some wiper problems too. Ive replaced the switch and the motor, still the same thing, only works on high setting, no low or intermittent, my washerfluid pump doesnt work either (which sucks in salty road conditions because I have to stop frequently at gas stations to clean the windshield.
 
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Old Jan 3, 2012 | 05:30 AM
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Joey,
You need a new wiper speed governor for your 1987, or you need to open it up and solder the broken connections.
This is a black plastic 2.5" cube usually bolted to the top of the parking brake bracket.
The switch plugs into it, and it plugs into the harness under the dash.
 
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Old Jan 3, 2012 | 02:17 PM
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Originally Posted by ArdWrknTrk
Joey,
You need a new wiper speed governor for your 1987, or you need to open it up and solder the broken connections.
This is a black plastic 2.5" cube usually bolted to the top of the parking brake bracket.
The switch plugs into it, and it plugs into the harness under the dash.
Ok thanks, I appreciate it!
 
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Old Jan 3, 2012 | 02:26 PM
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The screws that retain the mounting bracket also hold the housing closed.


Here's the heatsink that comes loose.
 
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Old Jan 3, 2012 | 04:33 PM
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Check that the washerpump is connected, that's below the reservoir, if it's connected, check the little hose that goes to the windshield spray.
 
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Old Jan 3, 2012 | 04:48 PM
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You can usually hear the washer pump if it is working.
If it is, then the little nozzles in the cowl can be plugged, or the washer fluid has crystallized in the line.
I pin can clear the nozzles and an air hose can purge the lines back to the fluid reservoir.

If the motor is not working check for power to the plug when the **** is depressed.
I swapped my motor before realizing that the wires were broken where they enter the plug at the motor.
 
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Old Jan 3, 2012 | 07:35 PM
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Well, my current issue is that the little hose broke, so that's yet another posibility.
 
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Old Jan 3, 2012 | 07:43 PM
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Where does it squirt out now?
 
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Old Jan 3, 2012 | 09:04 PM
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Just half way, over the fender, the crappy plastic line broke right there.
 
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Old Jan 4, 2012 | 12:42 PM
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When repairing the electrical govenor, DO NOT bolt it back down. Wrap it with foam rubber, put tape around the foam to hold it on, and just push it somewhere out of the way. The park brake releases very hard on these trucks. The controller is mounted just above the park brake rubber stop, and it will shake the insides of the controller apart after years of the brake pedal banging against the stop. Apply the brakes and release them and see how hard the pedal hits the stop. The whole dash will jump.
 
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