Not engine related but a winter job that needed doing, a howling windscreen wiper motor. It was still working (just about) but would make an awful howling noise intermittently.
Following zee German fellow's instructions from Youtube (Irina) I removed the top part of the HVAC blower assembly, only managing to round-off two screws in the process and snapping a third. They should be easy to extract with the top part off as a good 4mm of screw is exposed, so going to use the hot air blower and some penetrating fluid to remove them (they are screwed into the lower plastic part luckily and not metal).
I covered the engine with an old blanket as I didn't want to get any dirt on it now it is looking brand new!
Once all the screws were removed the top part needed a good bit of pressure to release it, I was then able to vacuum all the dirt from behind the cover and remove the motor assembly.
Next it was time to remove the wiper linkage, however this was difficult as the two M18 nuts were welded to the aluminium threads. I believe this is a common problem made all the worse by the linkage being NLA from Porsche for some time. I've ordered a M18 thread die in the hope I can restore the threads enough that I can hand tighten the two nuts on.
I've now removed the wiper motor from the linkage in preparation to strip it down and try and restore it. I've also ordered a replacement motor in case it is unsalvageable, which is for VW cars and so doesn't have the "beserk" mode speed but should work fine according to another thread on tipec (below).
This is a quick write up of an alternative replacement of the windshield wiper motor that I have found for the 944 (which should also work for the 924/968) A li
forums.tipec.net
And a link to the part I ordered -
https://www.ebay.co.uk/itm/336339742479
You can see the damaged threads in the picture below. I also found the original wiper motor cover which was in a box of 944 parts in the attic, so will fit that when it eventually all goes back in the car.
More updates when I dismantle the motor!