E. Window Acting Weird - Automotive Wiring and Electrical


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E. Window Acting Weird

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stockdogger
New User

Feb 7, 2009, 1:58 PM

Post #1 of 3 (1167 views)

E. Window Acting Weird	Sign In

1990 Dodge B350Van-electric windows-drivers side window-when push the button for the window to go down--it seems to try and go up when the window is all the way up. I took the door panel off and can reach in and pull downward on bottom of window-till I get it started then push on top of window- while pushing the button and the window will come down-but the farther down it comes the more pressure it takes pulling downwards for the window to keep coming down while pushing the button. Let off the button, let go of the window and it will go up part way-as if releasing pressure. I’ve read something about polarity changes for the window to go up or down--do you think the switch is bad and not changing the polarity…or something else wrong. The window has been working fine and then a few times was jerky going down and now the above..any help will be appreciated…thanks, Dennis

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Feb 7, 2009, 2:14 PM

Post #2 of 3 (1166 views)

Re: E. Window Acting Weird	Sign In

WEIRD is the right choice of words! Ya - does sound like polarity is mixed up?? Dunno how that could happen without swiching wires intentionally but guess it could at the switch.

While in there you should be able to add power and ground to the unplugged motor at the last connector and make it work so at least know it operates from there. Then I can only guess the switch is screwed up. When you know what polarity works on the color of wire to the motor directly you could check what polarity is being sent to the still unplugged end with the tester. It should (general power window motors) reverse + with - and back again for up or down request,

T

Ps: Sometimes a little houshold 9v battery is enough to get the motor to nudge along with help. Don't force it against the regulator!

stockdogger
New User

Feb 7, 2009, 2:28 PM

Post #3 of 3 (1163 views)

Re: E. Window Acting Weird	Sign In

Thanks for the suggestions Tom. Getting dark now but if still warm tomorrow--or when it is warm- will try doing what you said of unplugging motor and checking polarity and all...thanks again. Dennis

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