On our 2005 Grand Caravan, the rear wiper doesn't clean more than half the normal area, despite several full-blade-assembly changes.I think the motor has become loose where the shaft goes through the hole in the back window. This keeps the wiper from aligning correctly, and doesn't allow it to apply enough force to wipe the glass. Is there a simple (or not) way to tighten this?
I had a similar problem on my Jeep. I tried replacing the blades and it didn't fix anything....just wasted some money. I used WD-40 and still nothing. After 3 winters I decided to try something simple. I put pressure on the base to brace it and tried bending the distal end towards the vehicle. I didn't see it move at all. But it was worth a shot. I turned it on and it contacted perfectly; it operated the way it was when I first got the truck. Good look and I hope this works for you nor is it too late since you posted 2 months ago.
Have you tried to replace the arm assembly? with the spring and everything? the spring can weaken and not press the blade on the glass properly. you said blade so im assuming you meant blade. try the arm. there is not much there that can go wrong on these.
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rear wiper assembly is loose
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