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Re: 91 regal fuses
The motor to the wipers may be burning out. when a motor from the wiper starts to go bad it pulls more amps. You can try to disconnect the wiper motor and see idf the fuse does not blow. If you disconnect the wiper motor and see the fuse does not blow this may be a sign the motor is bad. Replace it and all should be well. P.S. if you remove the motor and the fuse still blows it may be there is a short some where in the electrical system of the switch to the wiper system.
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If your wiper fuse keeps burning out, your wiper motor might be failing which causes too much amperes required to turn the motor which in turn trips the maximum rated amperes of the fuse.
Follow the wiring of that fuse to your wiper motor to make sure the wiring is not nicked and grounding to the metal. Once you confirm that there is no shorted wire, disconnect the wiper motors wiring connector. Fuse a new fuse and if the fuse does not blow anymore then you isolated the problem which is the wiper motor causing the fuse to blow. Fix or replace the wiper motor.
When diagnosing blown fuses, I usually temporarily replace any fuse in a vehicle with a circuit breaker type fuse. If there is still a short somewhere in the wiring or the component itself in line with the fuse, the circuit breaker fuse will just trip and I just reset it again after I fix the problem. An advantage of keeping to replace a blown fuse while diagnosing.
Does the fuse blow when the wipers are off or when you turn the wipers on? A fuse blowing means either a short circuit or an overload. Lets say that your wiper transmission is new and working properly, then an overload is probably blowing the fuse which is caused by the circuit pulling to much current because something is not aligned correctly and moving freely when the wiper motor is turned on. Before you connect the arms to the transmission, move the arm assembly manually with your hand to make sure the wipers go across and back on the windshield. This will verify that the arm assembly is moving freely and not jamming. Then turn the wiper transmission without connecting the wiper arms and see if the transmission is working properly and not blowing the fuse. This will verify that your wiper transmission is not defective. Check the wiring going to the wiper transmission for any bare spots or nicks on the wire insulation. If you have a bare spot or nick that is touching metal, the fuse will blow (this is called a short circuit). If you find a bare spot or nick on the wire use electrician tape to insulate the bare spot or nick. Usually three wraps of electrician tape around the bare spotor nick will do the job. Oh, make sure to replace the fuse with the correct amp fuse. Your car dealer auto parts can provide the information (over the phone) on the correct amp size. You can purchase the fuse at any auto parts. FYI: Too small an amp on the fuse will blow when the wiper is turned on. Too large of a fuse will cause the wiring to burn if your wipers should stop shifting and jam. Good Luck. Hope this helps.
Does the fuse blow as soon as you turn on the switch? Or do the wipers operate for a bit then the fuse blows? Will the wipers work in intermittent mode? Can you move the wipers by hand? Unless other wiring work has been done (eg radio replaced) I suspect the wiper motor is toast.
The power distribution box in the engine compartment # 6 , 30 amp mini - fuse , front wiper motor , front wiper relay , front washer pump , FEM ( also # 7 , 25 amp mini - fuse , rear wiper etc. ) The owners manual shows to disconnect your battery cables before servicing anything in the PD BOX
your relay could be shorted which makes the fuse keep blowing
dis-connect wiper motor and replace fuse and try switching wiper motor on if fuse does not blow motor faulty and shorting out and causing fuse to blow.if still blows fuse must be a short in the wiring from wiper motor plug back to wiper motor switch.
Are you replacing it with the correct amp fuse? Buy a couple of the RIGHT fuses and try this.Your wiper motor may be bad, or the wiper mechanism is binding, causing the motor to over amp and blow the fuse. Try lubricating, if you get to it, the arm mechanism, and make sure it is not hitting anything while it is in motoion. Not familiar with this cars set up. Remove wiper blades, or stand them up and see if it still blows tyhe fuse
If the fuse blows as soon as you put it in and the wipers are off then you have a short between the fuse block and the wiper switch.
If the fuse blows only when you turn the wipers on then more than likely the wiper motor has shorted and burned out. This one is very likely if the snow storm was heavy and you was driving in it. Cause- Moving large amounts of snow and ice off the window puts a heavy load on the wiper motors.