Pete0309 Posted March 29, 2018 Report Share Posted March 29, 2018 Driving home from work last night through countryside, and would occasionally hear a kinda "whoo" sound. Thought it was an owl in the countryside, but it happened today on the way there. Anyone have any idea what this could be? It also sounds sorta electronic, especially as it fades out. Quote Link to comment Share on other sites More sharing options...
JoeyEunos Posted March 29, 2018 Report Share Posted March 29, 2018 Ghost trapped in the re-circulating haunted house valve filter maybe? Seriously, not enough to go on here. Try to be more specific as to the noise location and what circumstances it takes place Quote Link to comment Share on other sites More sharing options...
Skezza Posted March 29, 2018 Report Share Posted March 29, 2018 Considering you've given no real detail we don't have much to go on. Slipping power steering belt though would be my first guess. Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 29, 2018 Report Share Posted March 29, 2018 i know what it is.... oh, very common. Come on, i'm enjoying the guesses. (nothing to worry about...) Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 29, 2018 Report Share Posted March 29, 2018 (edited) here's a clue. just about every vdub from about 1977 does it. and more in damp wet weather. rarely in hot dry weather (although there is a different but very similar sound that can come from the engine bay of a mk2 or an audi 80 only in hot weather). that's probably given it away... rich don't spoil my amusement! (i know you know this one) Edited March 29, 2018 by mk2 trying to keep rich quiet Quote Link to comment Share on other sites More sharing options...
Pete0309 Posted March 30, 2018 Author Report Share Posted March 30, 2018 16 hours ago, mk2 said: here's a clue. just about every vdub from about 1977 does it. and more in damp wet weather. rarely in hot dry weather (although there is a different but very similar sound that can come from the engine bay of a mk2 or an audi 80 only in hot weather). that's probably given it away... rich don't spoil my amusement! (i know you know this one) Please please tell me! Is the car safe to drive? How can I fix it? Quote Link to comment Share on other sites More sharing options...
Pete0309 Posted March 30, 2018 Author Report Share Posted March 30, 2018 mk2 is right about it happening when wet and damp, and also seems to mainly happen not long after I start driving. Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 30, 2018 Report Share Posted March 30, 2018 (edited) ok, time's up! its the interior fan blower motor bearing running dry. annoying, but it'll carry on for years. to 'fix' it, it just needs a couple of drops of oil, but is a right pain to get to. really hot weather can release a little lube onto the shaft so it'll be fine again for a few months. nothing to worry about. the other similar sounding event can be the radiator fan motor bearing, but that often makes a humming sound along with the "t'woo"... do a site search with the word "owl" and see how often it comes up... Edited March 30, 2018 by mk2 Quote Link to comment Share on other sites More sharing options...
Rich Posted March 30, 2018 Report Share Posted March 30, 2018 the interior motor is really easy to get at on a lupo. few t20s, some foam and you are in there. Quote Link to comment Share on other sites More sharing options...
lupo 1.7sdi Posted March 31, 2018 Report Share Posted March 31, 2018 If it depends on the travel speed can be from the wheel bearing (if you happen to hear the sound in about the same area you probably accelerate there harder). Usually in this situation the sound only occurs once and does not reappear even if the conditions in which it appeared are reproduced (it isn't a rule, but it can happen ) and the sound disappear at the speed reduction. Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 31, 2018 Report Share Posted March 31, 2018 yeah, lupo/arosa wheel bearings are way too small for the front wheel loading forces on a 1ton car. they make more of a grinding/humming noise when they start to go, related to car speed. the faster, the louder... Quote Link to comment Share on other sites More sharing options...
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