Hi all
I'm chasing a self park issue, everyone said must be motor, so I brought a second hand wiper motor stripped and rebuilt it and bench run and it self parks. Now the problem is I connected rebuilt motor to the vehicle wiring and earthed it and it doesn't self park, is the wiper switch a known problem the vehicle is a LH ( wiper on dash panel) ( FYI it's a Lucas system)
No self park on wipers
Started by
_Muzzy_
, Aug 09 2015 03:45 PM
12 replies to this topic
#2
yel327
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Posted 09 August 2015 - 03:49 PM
Probably a bad 0V connection on either the motor or the switch.
#3
_Muzzy_
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Posted 09 August 2015 - 05:22 PM
Probably a bad 0V connection on either the motor or the switch.
0V do you mean earth?
#4
_Macca97_
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Posted 09 August 2015 - 05:27 PM
my ute did this for awhile, its all about timing 
got pretty good at stopping it in the right spot, my problem was in the switch just swapped it with another, (hj ute, switch on dash)
#5
_walpolla_
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Posted 09 August 2015 - 05:37 PM
Do you have a good earth body to engine block?
I had trouble with the wipers on my LH, and the body earth was the culprit.
Also, make sure the switch is earthed well to the steel of the dash, no paint under the lock nut etc.
regards,Rod.
#6
yel327
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Posted 09 August 2015 - 06:18 PM
0V do you mean earth?
0V or if you want -ve. There is no earth/ground on a car. The wiper switch needs to have a solid bond to the body of the car, as does the wiper motor in most cases.
#7
EunUCh
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Posted 09 August 2015 - 07:29 PM
The wiper motor should have an "earth" strap from the top right screw of the cover to the screw that holds it to the body of car....looking at the wiper motor in place it is on the plug (right) side of wiper motor assy.
#8
_Muzzy_
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Posted 09 August 2015 - 07:42 PM
The wiper motor should have an "earth" strap from the top right screw of the cover to the screw that holds it to the body of car....looking at the wiper motor in place it is on the plug (right) side of wiper motor assy.
Now that's funny the old motor that had no self park has an earth strap to mount screw. my new recon motor has the terminal to the side of the wiring plug and a earth strap, as mentioned I bench tested and it parked I sat it under the bonnet and plug in the loom and provided a body earth and it wouldn't self park
#9
caterham2
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Posted 09 August 2015 - 08:25 PM
I've got a 1929 Chevrolet without self park on the wiper either, got pretty good at stopping it where I want it LOL
#10
ls2lxhatch
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Posted 09 August 2015 - 08:42 PM
Try connecting a good earth wire to the body of switch in the dash. If the switch is not getting a good earth from the dash then the self park will not work.
The earth wire to the switch is just a quick way of diagnosing the problem. Usually just tightening the retaining collar on the switch will do the job.
#11
_A9X UC_
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Posted 18 August 2015 - 02:30 PM
Had the same problem. The wipers park about quarter the way up the winscreen
You will find the motor is running in reverse
To fix. Just undo the main bolts from the motor housing
Rotate the housing 180 degrees and bolt back together. This will get it going in the right direction
You will find the motor is running in reverse
To fix. Just undo the main bolts from the motor housing
Rotate the housing 180 degrees and bolt back together. This will get it going in the right direction
#12
_jimjet61_
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Posted 19 August 2015 - 09:36 PM
Can also be the earth terminal inside the unit, had one have all these symptoms, and found one of the little copper arms that run on the wiper gear had broken.
#13
_Muzzy_
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Posted 20 August 2015 - 05:12 AM
Can also be the earth terminal inside the unit, had one have all these symptoms, and found one of the little copper arms that run on the wiper gear had broken.
No it's a fully rebuilt motor that self parks when powered up on a bench, however when fitted and earthed correctly doesn't
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