1When should you replace windshield wipers?
Wiper blades should be replaced every six months to a year or as soon as you notice a difference in driving visibility. When wiper blades no longer make proper contact with the windshield surface, they can begin to squeak, chatter, skip, smear or streak reducing driving visibility.
2Do it Yourself Windshield Wiper Repair
Do-it yourself windshield wiper repair is fairly easy for even the most novice of mechanics. Commonly windshield wiper arms fail because they become loose, or rusted, and repairing them is easy enough. Like any car repair the actual process and the exact problem will vary from vehicle to vehicle, depending on how your wiper arms are attached to the vehicle. These repairs can be completed with the use of pliers, new windshield wipers, and a crescent (or adjustable) wrench. Some people may find having a ratchet set nearby to be useful as well. Typically the most common problem you will find is that one wiper moves independently (or not at all) from the other. Here is how you can repair that problem.
3What is the Problem?
Ascertain the problem to determine what is going on when your wipers are turned on. If one arm moves differently (slower, erratic, or not as far as it should) than the other, it usually means that the nut connecting it to the car is loose. If the arm refuses to move at all, the arm could be broken.
4Repair the Armature
Tighten the problem arm back in place or, if need be, remove the arm assembly to see if the arm itself is broken. If the arm is broken you will need to buy a new one and replace it. Pay particular attention to how the arm connects to the vehicle. Most likely your arm is just loose and can be re-tightened. Once the arm is tight, turn the wiper blades back on to see if you have alleviated the problem.
5Check the Linkage
The linkage can sometimes become damaged or bent and if you turn on your wipers and they make noise, but don’t move, the problem could lie there, or the motor could be burned out. Check the linkage and make sure it has not become disconnected, or replace the linkage if it is connected and continues to not work. If the motor does not make any noise and the wipers don’t move then the problem could be something as simple as a blown fuse or circuit.
6Is the Electrical Working?
Check the fuse and replace it, if needed. If the electrical system still isn’t working (no noise, no movement) then perhaps you have a problem with a wire or a circuit. In such cases you should consult an auto electrician to have the circuit replaced.