My rear wiper motor "thumps" but doesn't turn. When I say thumps it makes that sort of sound. The pump works and gets fluid but the wiper doesn't turn. I got another pump from salvage and hooked it up and it does the same thing. I know it's possible I have 2 bad motors but what are the odds? Is there anything else I should check? I checked the connector and am getting 12v on/off with the switch, the pump works so the only thing left if the motor, right? I tried to rotate each motor with pliers the arm hooked up but it won't budge. I think they are both frozen and bad. Any other thoughts?
Ok, I have tried 3 different motors and all behave exactly the same. I have 11.8v on the supply wire and a good ground at the connector. Turn the wiper switch to 1 or 2 and the voltage drops to ~ 7v. It seems like I have a voltage issue. The pump works just fine and squirts fluid. I have checked the 3 hatch switches and they all seem to be fine and give the proper "open" indication if I disconnect them. Do I have a bad switch? Is there something else I'm overlooking?
One other thing that I just found out, due to winter weather, is that my rear defroster also does not melt the snow. The switch lights up and cycles after a few minutes but does nothing to heat the glass and melt the snow/ice.
Any other ideas? One other thing that I just found out, due to winter weather, is that my rear defroster also does not melt the snow. The switch lights up and cycles after a few minutes but does nothing to heat the glass and melt the snow/ice. Are these related?
That sounds like a loose ground as the rear defroster has to have a solid ground to work
Let me check my service manual and see where the ground is for the rear defroster
mine thumps as well,,, occasionally it will do a half sweep, then stop.... when i open the glass, it returns to it's "closed" position.... is it a sensor for if the glass is open?
mine thumps as well,,, occasionally it will do a half sweep, then stop.... when i open the glass, it returns to it's "closed" position.... is it a sensor for if the glass is open?
There is a sensor that tells the tbc that the door or window is open my guess it also works the wiper as mine goes into park position when I open either(window or hatch)
Yep checked that, but it doesn't seem to be the problem. I'm thinking a bad ground, but don't know where to look at first. Defrost is not working either.
Yep checked that, but it doesn't seem to be the problem. I'm thinking a bad ground, but don't know where to look at first. Defrost is not working either.
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