Discussion
If it doesn't rain it pours, literally and this has lead to my next problem. The wipers have stopped working......They were fine this morning and now they don't want to know.
The ECU seems to be making all the right clicks when I press the buttons but the motor won't turn, it is also very hot to touch.
Are there any in situ tests I can do to check the wiring, etc. before I rip the motor out?
I've only got four days to go before Le-Mans and it seems this car is going to keep me on my toes.........
Ta
Ian
The ECU seems to be making all the right clicks when I press the buttons but the motor won't turn, it is also very hot to touch.
Are there any in situ tests I can do to check the wiring, etc. before I rip the motor out?
I've only got four days to go before Le-Mans and it seems this car is going to keep me on my toes.........
Ta
Ian
If the motor is hot of its own accord (ie not from heat soak or that big yellow ball in the sky) then therein lies your fault. It is receiving power but unable to convert it into movement, so it converts it into heat instead. Seized motor or linkage. Might respond to a strip, clean and lube.
Right then, the gearbox and motor are out, the latter looking and smelling like the bottom of a barbecue......
Has anybody fitted the upgraded wiper motor as sold by TVR Parts?
In haste I ordered one of these before I took mine apart and looking at the images I'm not sure it will fit.
Any thoughts?
Can't do anything else now, oh yes I can, drink beer
Has anybody fitted the upgraded wiper motor as sold by TVR Parts?
In haste I ordered one of these before I took mine apart and looking at the images I'm not sure it will fit.
Any thoughts?
Can't do anything else now, oh yes I can, drink beer
It'd be well worth your time taking the wiper system to bits and removing all the old grease and adding some new grease. I did this to mine, a '96, and it improved the performance of the standard motor immensely. Obviously put the upgraded motor in as it's already on its way but some new grease would probably make it's life easier.
Byker28i said:
Was it hard to get out? Need to do mine for the park switch/new grease
And yes Rain-X is your friend
No it's easy to get out. Took me about 20 mins I reckonAnd yes Rain-X is your friend
Coolant reservoir out, reservoir bracket out, undo 2 off 10mm nuts in order to remove the clamp, slacken off the 18mm nut from the output 'shaft', rotate the motor/gearbox so you can get to bolts securing the gearbox cover plate. Remove the plate and then you can un-mesh the motor drive from the main gear and remove.
I'm just waiting for the new motor to turn up before I can reassemble but I'm not expecting any bother.
HTH
Ian
...or the supply to it.
A wiper motor has, in addition to an earth and supply(s) from the switch, a constant 12v supply that keeps it turning (regardless of the wiper switch) until that supply is interrupted by the park switch. This is positioned at just the right moment in its rotation to 'park' the wipers, it's an 'interupter' switch which cuts off that constant supply . It the motor gets power from the switch, either constant or just a one second burst, it will move it past the park switch, and continue until the switch stops feeding it, and then continue for up to one cycle more due to the constant supply will keep it turning until its cut by the parkswitch
If it's parking all over the place, it's lost that ability to keep moving and just stops when the intermittant pulse stops. Hence there must be a problem within the park circuit, namely the parking switch or that constant supply. Test for a constant 12v (ign on) at the motor plug.
HTH
A wiper motor has, in addition to an earth and supply(s) from the switch, a constant 12v supply that keeps it turning (regardless of the wiper switch) until that supply is interrupted by the park switch. This is positioned at just the right moment in its rotation to 'park' the wipers, it's an 'interupter' switch which cuts off that constant supply . It the motor gets power from the switch, either constant or just a one second burst, it will move it past the park switch, and continue until the switch stops feeding it, and then continue for up to one cycle more due to the constant supply will keep it turning until its cut by the parkswitch
If it's parking all over the place, it's lost that ability to keep moving and just stops when the intermittant pulse stops. Hence there must be a problem within the park circuit, namely the parking switch or that constant supply. Test for a constant 12v (ign on) at the motor plug.
HTH
Edited by Twinkam on Tuesday 14th June 22:44
Edited by Twinkam on Tuesday 14th June 22:45
Twinkam said:
...or the supply to it.
A wiper motor has, in addition to an earth and supply(s) from the switch, a constant 12v supply that keeps it turning (regardless of the wiper switch) until that supply is interrupted by the park switch. This is positioned at just the right moment in its rotation to 'park' the wipers, it's an 'interupter' switch which cuts off that constant supply . It the motor gets power from the switch, either constant or just a one second burst, it will move it past the park switch, and continue until the switch stops feeding it, and then continue for up to one cycle more due to the constant supply will keep it turning until its cut by the parkswitch
If it's parking all over the place, it's lost that ability to keep moving and just stops when the intermittant pulse stops. Hence there must be a problem within the park circuit, namely the parking switch or that constant supply. Test for a constant 12v (ign on) at the motor plug.
HTH
You were right, it was the park switch. I took the new one out and fitted the original, hey presto, all is good again.A wiper motor has, in addition to an earth and supply(s) from the switch, a constant 12v supply that keeps it turning (regardless of the wiper switch) until that supply is interrupted by the park switch. This is positioned at just the right moment in its rotation to 'park' the wipers, it's an 'interupter' switch which cuts off that constant supply . It the motor gets power from the switch, either constant or just a one second burst, it will move it past the park switch, and continue until the switch stops feeding it, and then continue for up to one cycle more due to the constant supply will keep it turning until its cut by the parkswitch
If it's parking all over the place, it's lost that ability to keep moving and just stops when the intermittant pulse stops. Hence there must be a problem within the park circuit, namely the parking switch or that constant supply. Test for a constant 12v (ign on) at the motor plug.
HTH
Edited by Twinkam on Tuesday 14th June 22:44
Edited by Twinkam on Tuesday 14th June 22:45
Thank goodness for that. I can now sleep easy knowing that only the thing left to do tomorrow is wash, polish, wax and pack the car.
Many thanks for your advice
Ian
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