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#1 | ||
F*ck Edgar
Join Date: Jan 2010
Location: Franklin, NC
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![]() Maybe everyone else has already figured this out, but I still thought I'd share.
My 90 245s wipers were ridiculously slow. Borderline dangerous in anything but a light shower. When I bought the car, there were boxes of spare parts that came with it, including a better looking OE Volvo wiper motor. After being unable to see the road last night on the way home, I pulled into the shop and removed the old wiper motor. When I put the new one in, I was disappointed to see that the wipers were only marginally better...still painfully slow. Then I noticed that this new motor had a spot for a ground lug. I didn't realize before now that the motor grounded through the body. ![]() I hooked up an extra ground wire and voila! Speedy, smooth wipers! I've owned 6 240s and never had windsheild wipers work this well.
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K-Jet to Megasquirt Article The Departed: 1981 245, 1981 245, 1983 245 Turbo, 1983 244 Turbo, 1983 242 Turbo, 1984 244, 1985 245 Turbo, 1989 244, 1989 244, 1989 765, 1990 245 Turbo, 1991 244, 1992 245, 1997 855, 2004 V70R |
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#2 |
the real Towery
Join Date: Sep 2002
Location: VA, USA
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![]() I've definitely replaced a lazy motor once. Wonder if this would have helped it. They've always been pretty slow on my 240s.
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#3 |
Board Member
Join Date: Nov 2008
Location: Charlotte, NC
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![]() Headed to garage to have a look-see....
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'82 242 6.2L; '17 Mazda3; '16 CrossTrek |
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#4 | |
Board Member
Join Date: Jun 2006
Location: in your ducts
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![]() This looks like a good idea.
I'm curious, how was the motor grounded before you added the ground wire? All the 240 wiper motors I have seen were grounded by a brass tab under one of the mounting lugs. Those tabs can fail, and when they do, the motor generally stops dead, because it is isolated by the rubber mounting grommets. I have never seen a ground lug like that on one of these motors, including the ones I just looked at (this is likely because my cars are extra old). It is easy enough, though, to put a ground wire on one of the screws holding the cover plate on.
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I came into this game for the action, the excitement. Go anywhere, travel light, get in, get out, wherever there's trouble, a man alone Quote:
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#5 | |
F*ck Edgar
Join Date: Jan 2010
Location: Franklin, NC
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![]() Quote:
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#6 |
Board Member
Join Date: Jun 2006
Location: in your ducts
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#7 |
Board Member
Join Date: May 2014
Location: San Diego
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![]() Don't the newer 240's have a ground strap on the motor? My 92 did and my 77 does not so I will be adding a ground as well.
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#8 |
Board Member
Join Date: Nov 2002
Location: Oregone
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![]() Later motors have the ground strap.
I just use early SWF motors and clean the ground tab and add a strap... More importantly, if the seals have failed and wiper post grease has washed out and they are binding, no amount of messing with the motor will cure that... |
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#9 |
Board Member
Join Date: Sep 2013
Location: Jacksonville/ Tampa
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![]() There are a couple different wiper motors. An early style that grounds through the mounting tabs (up until around 88'-89' iirc) and the later style with the separate ground lug.
![]() ![]() http://forums.turbobricks.com/showthread.php?t=293022 I pulled one off a 93' in the yard and replaced my older style motor which was quite slow. Looking back, I wonder if it was actually the motor, or if cleaning the grounds would have yielded a similar improvement. |
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#10 |
Board Member
Join Date: Mar 2013
Location: St Petersburg FL
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![]() That's awesome. Mine aren't fast either, this is a really good idea!
I think that same night when it was downpouring over here, I almost considered getting some rainX, and I really hate that stuff... (ppl spray it on their windshields while driving, and it gets all over everyone else's) Funny thing, I installed a front view camera in the grill a week ago, and I could actually see like 80% better through the little 5"x4" screen. (Now I think maybe I should get a bigger screen and mount it over the plastic radio hatch grill thing.)
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http://new.volvocars.com/ownersdocs/...0.htm#contents |
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#11 |
Board Member
Join Date: Jun 2007
Location: Maryland
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![]() Where did you run the ground wire to?
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#12 |
F*ck Edgar
Join Date: Jan 2010
Location: Franklin, NC
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#13 |
Board Member
Join Date: Jul 2004
Location: Portland, Oregon metro
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![]() I've disassembled, cleaned, lubed, and reassembled these wiper motors to good effect.
Not too difficult. As for a ground, I fabricated one with thick gauge wire and round grommets on each end. Not slow at all. |
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#14 |
Board Member
Join Date: Jul 2012
Location: Franklin, IN
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![]() My '89 had a ground strap on it when I bought the car. When I replaced the motor, it came with a new ground wire, but I reused the old strap. It's a pretty critical thing to implement if you ask me. My wipers didn't really work without it.
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Feedback - https://forums.turbobricks.com/showt...ht=volvowagoon 1986 Buick Grand National - The show car 2002 Camaro V6 T5 +T - The fun car 2010 C30 T5 - My daily 1989 245 DL - Girlfriend's daily IG: @v6buick |
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#15 |
Board Member
Join Date: Mar 2004
Location: Lancaster, PA
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![]() on the early wiper motors, is only one of the 3 mounting bolts assigned to ground? if so, which one?
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#16 |
Board Member
Join Date: Sep 2009
Location: near baltimore
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![]() It is the top one.
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-Art |
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