Wiper Motor (new) needs more power??

[bill91817]

If only it did not rain!
having trouble with wipers on new to me troopy

Wipers were not working very well (well almost not at all) on a HJZ75 11/96 troopy (done 352,000km)
I greased all the knuckles but still not better so i replaced the wiper motor with a 2nd hand one - wipers still not working very well however i have noticed that if you turn them on with the car at idle the barely move across the screen -like really slow -
However if i rev the engine up to about 1500-2000 rpm the wipers improve to being almost normal -still a bit slow but work!
So it would appear that i am either not getting a good power supply to them of the earth is not as good as it could be
The plug (5 pin) is clean and i even sprayed some silicon spray in there for good measure - does anyone know how the power may be weakened to the wipers? - i have a test light but little else in the way of diagnostics!
cheers
Bill

 

[roscoFJ73]

I would say its not a good power supply. I have 2 75 series,both 95 models.One has excellent power and slides back and forth on a dry windscreen ,the other almost gives up unless the windscreen is soaked.
The poor performer also has an interior light that makes things darker when you turn it on.
Its a horrible dark yellow,the good one has a brightish interior light(for a 75 series).
The poor performer also has a 4 way battery switch,an auto sparky told me they rob power,so I may start by looking at that.

 

[bill91817]

hi mate
thanks thats interesting - i have a cole-hersey (spelling?) switch on my transmission tunnel..... - reckon i disconnect that at the battery and try?
Actually -(brain wave) my 2nd batt diconnected (is cooked) - might start by chucking in a new 2nd batt and see if that makes a difference!

 

[LJjuz]

Im sure its a factory failing, all the Landcruisers at work have terrible wipers unless windscreen is saturated, about as good as the electric windows! I find both my wipers and electric windows get better as the vehicle warms up. Its possible you replaced your wiper motor with another not so good 2nd hand motor?

 

[roscoFJ73]

hi mate
thanks thats interesting - i have a cole-hersey (spelling?) switch on my transmission tunnel..... - reckon i disconnect that at the battery and try?
Actually -(brain wave) my 2nd batt diconnected (is cooked) - might start by chucking in a new 2nd batt and see if that makes a difference!

Ive seen those switches on mining vehicles,were they a requirement when blasting?

I put 2 new batteries in and it didnt make much difference