Windshield wipers don't work when the car is cold? - Vintage Mustang Forums
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Old 01-13-2005, 03:11 PM   #1 (permalink)
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This has been happening for a few weeks now, but is starting to bug me especially now since it is extra cold outside. The windshield wipers on my Mustang won't work until AFTER the car has been running a few minutes and the interior has warmed up some. This problem only occurs in the morning or when the car has sat for 6-8 hours and it is cold outside. I have no idea where to even start to look for a problem, but it is a problem that is definately temperature related. Any ideas?
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Old 01-13-2005, 03:22 PM   #2 (permalink)
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I would try using a jumper wire at the switch. Thats one way to see if the switch is the problem.
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Old 01-13-2005, 03:45 PM   #3 (permalink)
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The problem could be worse.....like not work when it's raining out.... :winkgrin: sorry...had to be said..

I agree with Bill....gotta be in the switch.
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Old 01-13-2005, 03:50 PM   #4 (permalink)
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describe "Cold". :winkgrin:
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Old 01-13-2005, 03:52 PM   #5 (permalink)
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OK. Speaking of "had to be said...." I don't suppose the wiper blades are frozen to the glass?

Well, maybe that didn't "have" to be said...
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Old 01-13-2005, 06:10 PM   #6 (permalink)
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Have you got any connections held together by wire nuts? You might just want to check and see if there are and if any of them might be loose.
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Old 01-13-2005, 06:51 PM   #7 (permalink)
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Cold is above freezing, but for the wipers to not work it just has to be below 45F or so.

And no, the wipers aren't frozen to the window (I checked ). But I will check out the wiring, switch, and maybe the fuse? Which fuse is it anyway?
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Old 01-13-2005, 07:12 PM   #8 (permalink)
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Could be voltage problem or what I think it is that after all the years inhte car the motor itself has become full of dirt,oil and crap. You might have to take itout and clean the motor. A good electric degreaser sprayed into the moter and let it dry might just help it. If you could take the motor apart and clean the brass bushings (or bearings) will help it along. What iss happenening is all tha crud in it is holding it back when its cold
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Old 01-13-2005, 07:27 PM   #9 (permalink)
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I'm with ianm. I bet the motor is clogged with 35 years of crud and is "gelling" when cold. I can't really see a wiper switch being sensitive to heat.
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Old 01-13-2005, 09:12 PM   #10 (permalink)
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if it's crud not letting motor to turn youo should hear circuit breaker clicking if you get in a quite location and put your ear down close to wiper switch. my '68 got bound up by a piece of rust that fell down to end of motor shaft - just a real small piece. cleaned it and reasembled it and been fine since. if you need any help on how it works PM me - its quite clever. when you put motor shaft back in tie the brushes up with very fine pieces of wire and remove after you get brushes in - that was trickiest part.
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Old 01-14-2005, 04:05 AM   #11 (permalink)
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cold= metal contracts warm=metal expands....
the brushes or contact points on your old worn switch are showing their wear in the extreme temps.

R and R switch

Bet ya can't fab one of them up... :p
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