Author Topic: Wiper slow speed not working, high speed does.  (Read 670 times)

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NSharpley

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Wiper slow speed not working, high speed does.
« on: November 16, 2018, 10:40:17 AM »
Any suggestions on why this might be the case?

I have a couple of free wires around the area but Ive tested connecting many of them with the wiper stalk on the low speed.   Nothing as yet.

Will post a photo.

Current Alfa:
1975 Alfetta GT 2.0

Past Alfas:
1989 Alfa75 2.5ltr
1982 Alfetta Sedan 2.0
1976 Alfetta GT

poohbah

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Re: Wiper slow speed not working, high speed does.
« Reply #1 on: November 16, 2018, 08:27:50 PM »
Same question was asked by someone else a little while back.

www.alfaclubvic.org.au/forum/index.php?topic=18686.0
Now:    1999 156 V6
             1981 GTV
Before: 2001 156 V6 (sadly cremated)

Alfapride

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Re: Wiper slow speed not working, high speed does.
« Reply #2 on: November 16, 2018, 10:14:32 PM »
Where are you located?
Alfa 33 16v
Alfa 116 Giulietta
Alfa 116 Alfetta GTV
Alfa MY2004 147 TI

carlo rossi

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Re: Wiper slow speed not working, high speed does.
« Reply #3 on: November 17, 2018, 10:34:56 AM »
its from lack of use lubricate the rods and
wet the windscreen and keep the wiper on flat out ( well as fast as it goes)for
10 mins or so
it needs the cobwebs blown out
well that was mine anyway
current cars
red 83 gtv 2.0


previous cars
Red 76 1.2/1.5 alfasud ti
white 79 alfetta 2000
alfetta 74 1.8
escort Lotus twin cam
bikes
ducati 900 ss 1979
moto morini 3 1/2 sport 1975/6
Moto morini 3 1/2 valentini speciale 77 oh and a deltek rockhopper

NSharpley

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Re: Wiper slow speed not working, high speed does.
« Reply #4 on: November 17, 2018, 11:23:11 AM »
Many suggestions on the links point to a relay ... the standard fuse box on the Alfetta does not have a relay for the wipers.

So I cannot see how that applies.

Another interesting thing Ive found in trying to fix the left indicator is if I combine the wire for wiper high speed and the left indicator wire from the indicator switch I get wiper low speed and intermittent indicator for a few seconds, then a blown fuse.

So I feel like I am no closer to resolving either of these issues.

Current Alfa:
1975 Alfetta GT 2.0

Past Alfas:
1989 Alfa75 2.5ltr
1982 Alfetta Sedan 2.0
1976 Alfetta GT

bonno

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Re: Wiper slow speed not working, high speed does.
« Reply #5 on: November 17, 2018, 12:04:27 PM »
So I assume you can get fast speed ONLY with the wipers, ie; NIL in low speed position. I would be checking power at the wiper motor in the low speed position. If NIL then high probability it is the faulty switch /stork, but first check for loose wires or bad earth before going to the trouble and cost of a replacement part.
now
83 Alfetta GTV
05 156 JTS manual
past
00 156 selespeed
72 1750 GTV

GTVeloce

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Re: Wiper slow speed not working, high speed does.
« Reply #6 on: November 17, 2018, 01:27:08 PM »
I have had great success rebuilding these (three so far). They are quite easy to do and very satisfying. They get clogged up with old lubricant that gets really solid and thick. A clean and grease refresh does wonders to them. I highly suggest this of all 116 owners to speed up their wiper operation.

That said, the problem here may be further than that but that would be a good start. You also need to look at what your power supply is like. Check the power going to motor and see just how many volts are on siesta. Again, if you don't have a relay on your ignition you will be low on volts for sure. Easy test: turn your wipers on full speed and then switch the blower fan on. See how much slower it gets? The relay all but eradicates that.

sportiva

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Re: Wiper slow speed not working, high speed does.
« Reply #7 on: November 17, 2018, 05:50:02 PM »
There is no factory relay. The problem could be in a number of places and can only be rectified by going through the slow process of checking power and earth at all points along the 3 circuits. Intermittent, slow and fast. Clean and regrease the motor gearbox first because it is probably the original motor. Then clean the contacts at the connector for the wiper motor then check the obvious earth points. Finally, you can clean the contacts of the switchgear this is the last place to go as it will ultimately be the most frustrating part of the process and if all this does not work add a relay to take some load off the switchgear. Then follow this link to replace the spade at the motor connector.
 https://www.alfabb.com/bb/forums/alfetta-gtv6-1972-1986/591569-windshield-wiper-motor-lube-refit-82-gtv6.html there is another ground point at the firewall junction http://www.alfaclubvic.org.au/forum/index.php?topic=8480.0
If your car has this brake warning light junction box on the firewall closer to the clutch master cylinder
there is an earth point there as well as you can see in the photos
cheers and good luck
« Last Edit: November 17, 2018, 05:58:56 PM by sportiva »
3.0 GTV6 156JTS X2

75 2.5
2.0 Alfetta Sportiva #22
1.8 Alfetta
1.2 alfasud
2 75 parted out
15 alfettas parted
10 gtv parted
5 alfasuds parted

Car forums usually have more philosophers than practitioners

sportiva

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Re: Wiper slow speed not working, high speed does.
« Reply #8 on: November 17, 2018, 08:03:07 PM »
In your first post, you say " you have a couple of free wires"? what color and how many? a wiring schematic might identify the 'free' wires.
3.0 GTV6 156JTS X2

75 2.5
2.0 Alfetta Sportiva #22
1.8 Alfetta
1.2 alfasud
2 75 parted out
15 alfettas parted
10 gtv parted
5 alfasuds parted

Car forums usually have more philosophers than practitioners

Alfapride

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Re: Wiper slow speed not working, high speed does.
« Reply #9 on: November 18, 2018, 12:13:49 PM »
Iíve fixed three of the relays fixing this problem but could be other problems as others have cited if youíre in Melbourne youíre welcome to trial a working relay to rule out that issue itís easy to swap in and out
Alfa 33 16v
Alfa 116 Giulietta
Alfa 116 Alfetta GTV
Alfa MY2004 147 TI

NSharpley

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Re: Wiper slow speed not working, high speed does.
« Reply #10 on: November 19, 2018, 01:29:33 AM »
In your first post, you say " you have a couple of free wires"? what color and how many? a wiring schematic might identify the 'free' wires.

I have taken the steering wheel off and can now clearly see which wire is for which switch position.

One of my free wires is the windrescreen washer ... dont have it anymore, dont need it (I hope).

The other ... hmm ... not sure.  But is does not appear to have anything to do with the wipers.

I think its time for the mobile auto elec.

Current Alfa:
1975 Alfetta GT 2.0

Past Alfas:
1989 Alfa75 2.5ltr
1982 Alfetta Sedan 2.0
1976 Alfetta GT

CitroŽnbender

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Re: Wiper slow speed not working, high speed does.
« Reply #11 on: November 19, 2018, 08:37:22 AM »
A multimeter like this, is a cheaper start:

https://www.jaycar.com.au/economy-true-rms-autorange-multimeter/p/QM1321

Also suggest trying two other complementary approaches - first up, to post topical and well aimed photographs, second, to try a bit of deduction; see which general bundle the unknown wire comes from, and if its termination is lost, where it may have reached to. Could it be so simple as an ignition barrel light?

GTVeloce

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Re: Wiper slow speed not working, high speed does.
« Reply #12 on: November 19, 2018, 03:01:08 PM »
Quote
There is no factory relay

I wasn't suggesting there is. I meant in reference to an ignition relay.

Quote
One of my free wires is the windrescreen washer ... dont have it anymore, dont need it (I hope).

I vaguely recall you mentioning getting this registered or RWC. If so I suspect this will be a requirement.

Start by cleaning up/rebuilding the wiper motor. It will be in dire need of it regardless of possible wiring issues. It's a 30 minute job and needs no special tools or skills.

NSharpley

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Re: Wiper slow speed not working, high speed does.
« Reply #13 on: January 12, 2019, 07:26:31 PM »
So ... still nothing but high speed on the wipers.

Pulled out the motor, cleaned it up (it looked pretty good in there anyway), still nothing but high speed.

Using a multimetre I can see there is power to the wire feeding the high speed when the switch is in that position but there is no power feeding the middle setting when in that position.

So its likely thats the issue ... but why? 
Current Alfa:
1975 Alfetta GT 2.0

Past Alfas:
1989 Alfa75 2.5ltr
1982 Alfetta Sedan 2.0
1976 Alfetta GT

bonno

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Re: Wiper slow speed not working, high speed does.
« Reply #14 on: January 12, 2019, 08:02:35 PM »
I suspect you have some fault with the low speed part of the mechanism. Find attached a typical wiring layout for a 2 speed column operated wiper switch. Check position 53 at both ends for broken/faulty wire or faulty switch contact.
now
83 Alfetta GTV
05 156 JTS manual
past
00 156 selespeed
72 1750 GTV