Door window slow

[bobfather]

Bought this car in 2002 and still haven't got around to fixing the slow drivers door window. I've had the door card off and lubricated the runners but it's still slow. The power is very low under load so I'm planning to add a new dedicated +ve feed and ground wire. Is there any advice for this job? How do people feed a new wire in? Where's the nearest ground point?

[eric450]

Just a thought. I found what made the most difference on mine was cleaning and lubing the 'worm drive'.
Went from very slow and laboured to almost back to normal.

[Penelope Stopit]

Before getting involved with upgrading wiring or fitting relays for better power supply, check to see how well the window works when you connect the window motor directly to the cars battery, reverse the connections for up and down

Mind your fingers, always connect the motor up first and then the battery when your hands are clear

Disconnect all car wiring from the motor before getting to work

[bobfather]

Penelope Stopit said:

Before getting involved with upgrading wiring or fitting relays for better power supply, check to see how well the window works when you connect the window motor directly to the cars battery, reverse the connections for up and down

Mind your fingers, always connect the motor up first and then the battery when your hands are clear

Disconnect all car wiring from the motor before getting to work

That sounds like a good plan

[Penelope Stopit]

bobfather said:

Penelope Stopit said:

Before getting involved with upgrading wiring or fitting relays for better power supply, check to see how well the window works when you connect the window motor directly to the cars battery, reverse the connections for up and down

Mind your fingers, always connect the motor up first and then the battery when your hands are clear

Disconnect all car wiring from the motor before getting to work

That sounds like a good plan

Well it might prove something, good luck

[Colin RedGriff]

The runners shouldn't need lucricating, the rubber trim in the runners should be flock lined to allow the windows to run smooth. If the flock lining has rubbed off (which it will over time) then you need to fit new rubber trim in the channel. It's a simple push fit once you've extracted the glass from the door.

[N7GTX]

Spray the runners with WD40 or similar and if it improves then probably the runners as said above.

[bobfather]

N7GTX said:

Spray the runners with WD40 or similar and if it improves then probably the runners as said above.

I've had the door card off and lubricated the runners, there was negligible improvement but the slowness persists

[Belle427]

If all else fails and you need to beef up the supply voltage I’d make a good job of it and run the cables back to battery. Taking the dash top off may help with the drivers side run, passenger side should be pretty straightforward.
You don’t want to introduce any more wiring issues by tapping off other circuits.

[Steve_D]

The window motor has a 6" lead with a 2 pin connector so it is quite easy to unplug and test directly.

Steve