Symptoms Of A Bad Windshield Wiper: Diagnose A Problem!

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Car windshield wipers play a very important role, related to the visibility and safety of the driver and other people who board a car. It is convenient to detect in time the symptoms of a damaged or bad windshield wiper making a proper and simple diagnosis.

Wiper systems mainly consist of the wiper blades, wiper arms, a latching system, a motor and sometimes there is also a pump to spray fluid and a reservoir where the fluid goes. You will need to use the elimination process to find the precise cause of the wiper malfunction. This can be done thanks to several simple diagnostic steps and certain tools.

Damaged Wiper Blade Symptoms: Diagnosing A Difficulty

Diagnosing a Problem With a Windshield WiperThe steps you must follow to detect that something is wrong with your windshield wipers are the following:

  1. Put the car in “Neutral” if it is a standard transmission or “Park” if you have a car with automatic transmission. Apply the emergency brake and proceed to raise the hood, locate the fuse box and try to find the corresponding windshield wiper fuse and/or relay. The fuse is of a glass tube type or blade design., then visually examine the fuse to see if the filament inside either type is internally disconnected or blackened. If so, replace the blown fuse. Pull the relay out and replace it with another relay of the same pin design and voltage. Turn on the wiper and see if it works properly, if the wiper works fine then the fault was with the fuse or the relay.
  1. Turn on the windshield wipers; as you may also need to turn the ignition key to the “On. Look for and listen to the movement and the sound made by the windshield wiper motor. If you can’t feel any movement and you don’t hear any sounds, then turn off the wiper motor. If the wiper motor is hidden under the upper exterior vent panel, use a screwdriver to pry the panel out. Now if the windshield washer motor works thanks to a vacuum system, check the vacuum hose for cracks and loose connections from the source to the windshield wiper motor. Repair vacuum hose or tighten connection.
  1. Inspect the wiper rod connections.. You’ll notice a main drive arm, plus two wiper rod arms, supported by pivots. The connecting rods are connected by spacers and cotter pins, or with small nuts. Make sure the bolts or nuts have not come loose and have not fallen off the arms, as the arms should not be bent or warped. Try to find tiny twigs or rocks wedged between the lift arms and remove them if you find any. Move the lift arms by hand to see if they work properly, then spray a little white grease on all the linkages on the lift arm and also on the pivot points.
  1. Examine the wiper motor drive gear where it connects to the main tie rod. Both the gear and the sleeve must not be broken or out of order. Try to feel the mesh of the coupling gears so that they are tight. Tighten the windshield wiper motor bracket bolts using a screwdriver, if equipped with mounting bolts. If the wiper motor has a ground strap, unscrew the ground strap with a screwdriver and clean the connection with a piece of sandpaper, then reconnect and tighten.
  1. Look at the connection cable to the wiper motor so you can make sure it is clean and tight.. Flip the ignition key and wiper switch, clamp a test light wire to ground, and stab the hot wire into the wiper motor with the help of the test light probe. If it has voltage (voltage), the problem lies in a faulty wiper motor, check the windshield wiper pump motor in the same way by having an assistant activate the pump button with the key and turn it on. Ground the test light wire and stab the test light probe into the hot washer pump wire; voltage on the washer pump motor means the small motor is not working.
  1. Examine the condition of the wiper blades if they do not pass cleanly over the windshield and leave streaks.. Replace the brushesif necessary, by unfastening the old blades and fitting the new ones into the framed guides or slots.

With these steps you will detect the real problem in a windshield wiper, follow these steps if you notice the symptoms of a damaged or bad windshield wiper in your car.

You can also read: How to fix problems in the windshield wiper motor.

Advice

In the event of a flushing fluid problem, check to see if there is soap and water in the flushing reservoir, then examine the plastic feed hose for kinks or broken connections. Blow through the plastic hose to remove blockages and clean out the small filter pan at the bottom of the hose or reservoir.

Items you will need

  • Fuses (if required)
  • Relay (if required)
  • socket wrench set
  • Ratchet
  • screwdrivers
  • white fat
  • Sandpaper
  • Attendee
  • test light
  • Windshield wiper blades (if required)

Car windshield wipers play a very important role, related to the visibility and safety of the driver and other people who board a car. It is convenient to detect in time the symptoms of a damaged or bad windshield wiper making a proper and simple diagnosis.

Wiper systems mainly consist of the wiper blades, wiper arms, a latching system, a motor and sometimes there is also a pump to spray fluid and a reservoir where the fluid goes. You will need to use the elimination process to find the precise cause of the wiper malfunction. This can be done thanks to several simple diagnostic steps and certain tools.

Damaged Wiper Blade Symptoms: Diagnosing A Difficulty

Diagnosing a Problem With a Windshield WiperThe steps you must follow to detect that something is wrong with your windshield wipers are the following:

  1. Put the car in “Neutral” if it is a standard transmission or “Park” if you have a car with automatic transmission. Apply the emergency brake and proceed to raise the hood, locate the fuse box and try to find the corresponding windshield wiper fuse and/or relay. The fuse is of a glass tube type or blade design., then visually examine the fuse to see if the filament inside either type is internally disconnected or blackened. If so, replace the blown fuse. Pull the relay out and replace it with another relay of the same pin design and voltage. Turn on the wiper and see if it works properly, if the wiper works fine then the fault was with the fuse or the relay.
  1. Turn on the windshield wipers; as you may also need to turn the ignition key to the “On. Look for and listen to the movement and the sound made by the windshield wiper motor. If you can’t feel any movement and you don’t hear any sounds, then turn off the wiper motor. If the wiper motor is hidden under the upper exterior vent panel, use a screwdriver to pry the panel out. Now if the windshield washer motor works thanks to a vacuum system, check the vacuum hose for cracks and loose connections from the source to the windshield wiper motor. Repair vacuum hose or tighten connection.
  1. Inspect the wiper rod connections.. You’ll notice a main drive arm, plus two wiper rod arms, supported by pivots. The connecting rods are connected by spacers and cotter pins, or with small nuts. Make sure the bolts or nuts have not come loose and have not fallen off the arms, as the arms should not be bent or warped. Try to find tiny twigs or rocks wedged between the lift arms and remove them if you find any. Move the lift arms by hand to see if they work properly, then spray a little white grease on all the linkages on the lift arm and also on the pivot points.
  1. Examine the wiper motor drive gear where it connects to the main tie rod. Both the gear and the sleeve must not be broken or out of order. Try to feel the mesh of the coupling gears so that they are tight. Tighten the windshield wiper motor bracket bolts using a screwdriver, if equipped with mounting bolts. If the wiper motor has a ground strap, unscrew the ground strap with a screwdriver and clean the connection with a piece of sandpaper, then reconnect and tighten.
  1. Look at the connection cable to the wiper motor so you can make sure it is clean and tight.. Flip the ignition key and wiper switch, clamp a test light wire to ground, and stab the hot wire into the wiper motor with the help of the test light probe. If it has voltage (voltage), the problem lies in a faulty wiper motor, check the windshield wiper pump motor in the same way by having an assistant activate the pump button with the key and turn it on. Ground the test light wire and stab the test light probe into the hot washer pump wire; voltage on the washer pump motor means the small motor is not working.
  1. Examine the condition of the wiper blades if they do not pass cleanly over the windshield and leave streaks.. Replace the brushesif necessary, by unfastening the old blades and fitting the new ones into the framed guides or slots.

With these steps you will detect the real problem in a windshield wiper, follow these steps if you notice the symptoms of a damaged or bad windshield wiper in your car.

You can also read: How to fix problems in the windshield wiper motor.

Advice

In the event of a flushing fluid problem, check to see if there is soap and water in the flushing reservoir, then examine the plastic feed hose for kinks or broken connections. Blow through the plastic hose to remove blockages and clean out the small filter pan at the bottom of the hose or reservoir.

Items you will need

  • Fuses (if required)
  • Relay (if required)
  • socket wrench set
  • Ratchet
  • screwdrivers
  • white fat
  • Sandpaper
  • Attendee
  • test light
  • Windshield wiper blades (if required)

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