 | Home > Technical > Windscreen Wiper motor(?) issues |
 
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110   
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This morning they started making a noise like a little bird- from the mechanism not the blades on the screen. Needs oil on a rod somewhere I thought. Is the motor and any connecting rods easy to access and oil? Hopefully not full dash off job?
I also noticed that whilst intermittent (one down) worked fine, and so did constant (one up), what I assume to be rapid (two up) was barely moving, jittering and shaky like it was on its last legs. Is the motor on its way out? Connection? Rust? (I do get a wet right footwell) 2013 MY Puma 2.2TDCI Any thoughts appreciated! Last edited by ScarboroughSeadog on 13th Nov 2023 4:17pm. Edited 1 time in total |
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13th Nov 2023 3:06pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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What era Defender do you have? Pre or post Puma.
The chirping is quite the Defender quirk, many of them do. My wife and I affectionately refer to it as the gerbil. It is likely that the grease is a little dry. It is much easier to deal with the wiper motor if your Defender is a pre Puma, but not beyond a DIYer if it is. But yes there is a good amount of dash disassembly required, especially if you are going to get to the bottom of the high speed issue, potentially. Any grinding or is it just slow? It is not uncommon for the wiper gearboxes to wear and even the wiper spring drive-rod. |
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13th Nov 2023 4:08pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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Sorry, just amended post- it’s a 2.2 Puma.
The issue is only on high speed. Sometimes they work on that setting but normal speed, sometimes they stop entirely, sometimes they jitter and move v slowly. No noise associated with it. PS the bird has disappeared! |
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13th Nov 2023 4:23pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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The bird has flown south for Winter then
Ok, so the fast wiper speed is a direct 12v supply to the motor, rather than going through a relay. If it is the fast speed that is duff then in the past others have only managed to solve the issue by replacing the motor itself. The best way forward is to break out the multimeter and check that the motor is getting the required power and if everything checks out apart from the motor itself then it can only be the motor. Bad news is that since you have a Puma you have more to do to get to the guts of the bulkhead. Here's the wiring diagram for the Puma https://www.lrworkshop.com/wiring-diagram/...hers/front |
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13th Nov 2023 4:34pm |
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| TexasRover Member Since: 24 Nov 2022 Location: Paris Posts: 1060  
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there is a high speed?
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13th Nov 2023 4:42pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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I’m assuming high speed must be two clicks up, yes. Down is intermittent.
Might manage with normal speed and intermittent only- but the wider concern being the lack of high speed suggests the motor may be on the way out. That said, if so, I would expect issues with the other settings too. Wondering if it might be a bad connection/earth or something on the high speed setting? |
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13th Nov 2023 5:19pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Learn something everyday Blackwolf. I did not know about the smaller brush
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13th Nov 2023 6:29pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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This is exactly the info I needed- thanks. I’ll aim to manage with the two settings that work (and are used most often by me anyway) and delay motor replacement as long as possible (assuming lack of high speed not an MOT issue). Thanks |
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13th Nov 2023 7:25pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17387 
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Here's the picture. The high speed brush is the one in the 2 o'clock position, and although it looks the same width as the others you can just see where it reduced to half-width (almost all of the skinny bit has worn away).
If you can get one, replacing the the brush plate assembly will sort the problem if this is the cause.  Click image to enlarge |
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13th Nov 2023 8:57pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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I bet that’s it! If the full dash needs to be removed to access(?), I’m not in too much of a hurry……
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13th Nov 2023 9:07pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17387
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You need to remove almost all of the dash fasteners but you can then pull the dash far enough from the bulkhead on the n/s to allow the motor to be extracted without actually removing the dash.
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13th Nov 2023 9:58pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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Ok now the intermittent wiper function has stopped, but it either works fine or it doesn’t work at all, which suggests a wiring rather than a motor fault to me, or possibly a problem with the selector lever contacts. Any thoughts? Thanks
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18th Nov 2023 6:34pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17387
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If it works reliably with the stalk switch in the manual normal speed setting, then yes, this does suggest that it is not a motor fault. Delay unit or possibly stalk switch.
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18th Nov 2023 8:00pm |
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| ScarboroughSeadog Member Since: 21 Jul 2022 Location: Scarborough Posts: 110
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Normal speed works fine. Intermittent either works fine or not at all. High speed jitters. Might be a combination of a few things but first (easiest and cheapest) check would seem to be the selector stalk and perhaps the relay for the intermittent function. Can these be checked or is it a case of replace and see? Can someone point me to the relay location and part number? Presuming stalk selector fairly easy to replace- looks pretty cheap too. I suspect it’s the selector switch.
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18th Nov 2023 8:05pm |
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