Window motors
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Gentlemen,
Both my electric windows work, but are really slow and need a bit of help closing completely.
I've spayed wd40 on the mechanisms and applied silicon grease to the guides to no avail.
Is there anything else I can do to make them work properly?
Paul
Both my electric windows work, but are really slow and need a bit of help closing completely.
I've spayed wd40 on the mechanisms and applied silicon grease to the guides to no avail.
Is there anything else I can do to make them work properly?
Paul
- Lordflashart
- First Gear
- Posts: 46
- Joined: 09 Jun 2015
try putting a direct earth from battery to motor,also check supply voltage,it could be bad connection on switch,does it work quicker in up or down position / are both sides the same speed ,I have in the past made up separate leads to other battery/ booster pack to eliminate other potential problems
- el torro
- Second Gear
- Posts: 199
- Joined: 02 Aug 2013
The grounds are undersized
the wire from the switch and from the fusebox to the switch is undersized
the grease in the slides hardens and needs to be cleaned and replaced, WD doesn't really do it.
When the wires are replaced with 14 AWG wire the windows will work acceptably with the car off and normally with the car running above idle
the wire from the switch and from the fusebox to the switch is undersized
the grease in the slides hardens and needs to be cleaned and replaced, WD doesn't really do it.
When the wires are replaced with 14 AWG wire the windows will work acceptably with the car off and normally with the car running above idle
- gus
- Fourth Gear
- Posts: 726
- Joined: 05 May 2011
The motors are very old and very simple. It's easy to just strip them down , clean up the armature with fine wet and dry , grease the gears and re assemble. I did this and mine were both much better. I think the motor is also used on several fords as window wipers such as the escort and cortinas so you may find spares there.
Steve
Steve
- Concrete-crusher
- Third Gear
- Posts: 402
- Joined: 09 Jun 2013
In previous related topics at least one member of this forum has had good success in mounting a relay near the motor in each door. The dash-mounted switch need only energize the relay coil. Of course everything else must be in good working order and increasing the wire gauge for the ground and +12V to the relay contact and then to the motor has a significant benefit.
Russ Newton
Elan +2S (1971)
Elite S2 (1962)
Elan +2S (1971)
Elite S2 (1962)
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CBUEB1771 - Coveted Fifth Gear
- Posts: 1684
- Joined: 09 Nov 2006
Cheers chaps,
I'll remove the motors and clean them and take a look at the wiring also.
The car only ran for a few minutes before dropping a valve, so evening has just been using a battery, so that may be part of the problem.
Paul
I'll remove the motors and clean them and take a look at the wiring also.
The car only ran for a few minutes before dropping a valve, so evening has just been using a battery, so that may be part of the problem.
Paul
- Lordflashart
- First Gear
- Posts: 46
- Joined: 09 Jun 2015
Lordflashart wrote:so evening has just been using a battery, so that may be part of the problem.
Yes, that is definitely part of the problem, mine have always been very slow when driven off the battery alone.
Russ Newton
Elan +2S (1971)
Elite S2 (1962)
Elan +2S (1971)
Elite S2 (1962)
-
CBUEB1771 - Coveted Fifth Gear
- Posts: 1684
- Joined: 09 Nov 2006
I clean the commutators on my motots w/ scotch-Bright and then clean the air gaps between the commutator segments w/ a corner of a business card. The carbon brushes track carbon residue into the air gaps which shorts the segments together and then the motor becomes reluctant to rotate.
My original motors in my SS had broken bolts and the bolts were aluminum. I was concerned at 1st about using steel bolts, but they have worked fine and no worry about breakage. The bolt size is imperial 10-32.
Roger
My original motors in my SS had broken bolts and the bolts were aluminum. I was concerned at 1st about using steel bolts, but they have worked fine and no worry about breakage. The bolt size is imperial 10-32.
Roger
'67 Elan S3 SS DHC
'67 Elan FHC pre-airflow
'67 Elan S3 SE upgrade to 26R by Original owner
'58 Eleven S2 (ex-works)
'62 20/22 FJ (ex-Yamura)
'70 Elan +2S RHD
'61 20 FJ project
'76 Modus M1 F3
'67 Elan FHC pre-airflow
'67 Elan S3 SE upgrade to 26R by Original owner
'58 Eleven S2 (ex-works)
'62 20/22 FJ (ex-Yamura)
'70 Elan +2S RHD
'61 20 FJ project
'76 Modus M1 F3
- Elan45
- Coveted Fifth Gear
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Paul, mine were also terrible when I got my car. The larger gauge wire and relays helped, but they still performed slowly. I found the relays well worth the effort as our fifty year old switches are not the best and are pretty much unobtainable NOS. I figured the lower trigger current through the old switches was best for them. If upgrading the wire through the doors, would recommend modern thin wall cable; the tube carrying the wire is a pretty tight fit. That all said, 20/20 hindsight I would focus on the motors first.
If you decide taking the motor apart is too time consuming, the good news is rebuilt lift motors are available from your local Autozone with a nice credit for your old core.
I posted the part number call-up I used here. Note the discussion on which side you are replacing in the Lotus, as it is opposite to the original GM application. I used a Chevelle call-up, but the same motors are very common across the NA GM line-up of the period. The new reconditioned motors are almost too fast, even on battery only! Just noticed I posted the part info five years ago; they are still working fine.
lotus-electrical-f38/plus-window-motor-and-mechanism-needed-can-anyone-suggest-t21184.html
Been a while since I had stock Plus 2 wiring, but I found I needed 15 amp fuses for the motors as the stall current top and bottom of travel would sometimes blow the fuse.
Note the Plus 2 window lifts are completely different from the Elan system, so sometimes it gets a bit confusing looking at old posts.
HTH
Stu
If you decide taking the motor apart is too time consuming, the good news is rebuilt lift motors are available from your local Autozone with a nice credit for your old core.
I posted the part number call-up I used here. Note the discussion on which side you are replacing in the Lotus, as it is opposite to the original GM application. I used a Chevelle call-up, but the same motors are very common across the NA GM line-up of the period. The new reconditioned motors are almost too fast, even on battery only! Just noticed I posted the part info five years ago; they are still working fine.
lotus-electrical-f38/plus-window-motor-and-mechanism-needed-can-anyone-suggest-t21184.html
Been a while since I had stock Plus 2 wiring, but I found I needed 15 amp fuses for the motors as the stall current top and bottom of travel would sometimes blow the fuse.
Note the Plus 2 window lifts are completely different from the Elan system, so sometimes it gets a bit confusing looking at old posts.
HTH
Stu
Stu
1969 Plus 2 Federal LHD
1969 Plus 2 Federal LHD
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stugilmour - Coveted Fifth Gear
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Stu, I remember well your post about the window motors. But are you saying you did wiring/relay upgrades first, didn't get great improvements, then put in the rebuilt motors with no other changes and saw a huge improvement?
That would clearly indicate the effect of just the wiring and then just the motors. Nice. If so, the motors are, as you say, the place to focus.
Thanks once again, Stu!
Prayin' for rain,
Randy
That would clearly indicate the effect of just the wiring and then just the motors. Nice. If so, the motors are, as you say, the place to focus.
Thanks once again, Stu!
Prayin' for rain,
Randy
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Sea Ranch - Coveted Fifth Gear
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Sea Ranch wrote: ...But are you saying you did wiring/relay upgrades first, didn't get great improvements, then put in the rebuilt motors with no other changes and saw a huge improvement?..
Yes, that is pretty much it Randy.
There was some voltage loss through the switches and stock wire for sure, and I consider it a worthwhile upgrade. Modern cars use a relay for window lifts, and as I say they draw 12 or so amps at stall. In the Plus 2 it is an easy upgrade with two relays for each window.
The big improvement was reconditioned motors. I tried cleaning up the grease, etc. first, but for about $120 a side I highly recommend the reconditioned units with core credit. One thing for sure, you will prefer to install the motor once! Note you have to re-use your lift gear as it doesn't come with the reconditioned unit.
HTH
Stu
Stu
1969 Plus 2 Federal LHD
1969 Plus 2 Federal LHD
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stugilmour - Coveted Fifth Gear
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