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There are a couple of obvious reasons. One could be that the wiper arms were "put on wrong" by someone. The arms push on to the splines on the drives, and it is possible to misalign them. Were one or both arms removed and re-installed recently?
The second possibility is that the drives themselves are messed up and "out of sync" because of some kind of mechanical failure. Was the "transmission" from the wiper motor to the drive splines worked on at any time recently?
Pull both wiper arms. You may need to pry them off, but do this carefully so you don't ruin anything. A block of wood and a tire iron can work, but get some advice or help if you are unsure of what you are doing. There isn't any judgment passed here. Just practical advice. Not a lot of us can suture a wound, so if someone was telling us how to do that, it would be because we probably don't have a lot (or any) experience doing it.
With the arms off, mark the splines with something that is easily visible. White-out works well. Kick on the wipers and watch the splines and your marks. Do they move together and the same distance and all that?
If you step through this and you don't get good results, call the auto parts store and see if they have any suggestions. These guys aren't mechanics, but they have a lot of good knowledge, and it's free. Good luck.
What else can I help you with?
What is it called when cars crash into each other, resulting in a collision?
When cars crash into each other, resulting in a collision, it is called a car accident.
Why don't fish crash into each other?
Because they are smart.
How does earth cause earthquakes?
it is were the crust crash in to each other
What is it called when two satellites almost crash into each other?
Gravity
The sun's heat causes atoms to move so fast that they crash into each other?
Yes... yes it does. For that matter, the Earth's heat causes some atoms to move so fast that they "crash into each other."
Why planets orbite around each other rather than crash due to gravity?
They keep running away from each other.
I have a 04 Montana and the wipers keep bumping into each other and wrecking the blades. Why?
sounds like some one took off one or both wipers from the gear that works them and did not get them properly alined.
How many satellites crash into each other in space each year?
millions, if you count natural satellites.
What in wind?
wind is when worm molicules and cold molicules crash into each other
What do you call two dinarsours thst crash into each other?
Two dinosaurs that crash into each other could humorously be referred to as a "dino-collision" or "dino-mite crash." Alternatively, you might call the scenario a "dino disaster." It's a playful way to highlight the absurdity of such an event!
Do Two positives charges crash together?
Yes, two positive charges will repel each other due to their like charges. They will not crash together and will instead push away from each other.
What is the car sport called where a group of cars crash into each other?
demolishion derby
