Anglo-Frenchman Posted June 2, 2016 Share Posted June 2, 2016 For some time my 2002 disco has randomly made an odd vibrating noise (almost sounds like an air compressor running) after the engine is switched off. It sometimes pulses for 3 or 4 times, about a second long each time. Any ideas? Quote Link to comment Share on other sites More sharing options...
Shackleton Posted June 2, 2016 Share Posted June 2, 2016 Is it V8 or Td5? The only thing I've ever heard on a Td5 after shutdown is the particulate filter winding down, but what you describe doesn't sound like that. If it's a V8 it could be your idle air control valve (stepper motor) resetting. Quote Link to comment Share on other sites More sharing options...
Maverik Posted June 2, 2016 Share Posted June 2, 2016 Td5's have the centrifugal oil filter that you hear spinning down after you've shut the engine off, which can be quite noticeable... Quote Link to comment Share on other sites More sharing options...
Anglo-Frenchman Posted June 2, 2016 Author Share Posted June 2, 2016 Thanks guys. No it's not the centrifuge. Mine already sounds like s dive bombing Stuka on shy down. This is quite different. Almost sounds like a motor running or juddering. Hard to describe. Quote Link to comment Share on other sites More sharing options...
Shackleton Posted June 2, 2016 Share Posted June 2, 2016 Could it be the release of a gas or fluid? Under pressure both can make unlikely sounds. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted June 2, 2016 Share Posted June 2, 2016 Crank damper? Quote Link to comment Share on other sites More sharing options...
finnarne Posted June 2, 2016 Share Posted June 2, 2016 Air compressor pump to level the car ? Mine does that, especially when i park in my driveway, as the driveway is not level. Quote Link to comment Share on other sites More sharing options...
Anglo-Frenchman Posted June 2, 2016 Author Share Posted June 2, 2016 That sounds plausible. Is it failing in some way? Air compressor pump to level the car ? Mine does that, especially when i park in my driveway, as the driveway is not level. Quote Link to comment Share on other sites More sharing options...
finnarne Posted June 3, 2016 Share Posted June 3, 2016 Mine has been making that noise since it first landed in my driveway ~18 months ago. Quote Link to comment Share on other sites More sharing options...
Anglo-Frenchman Posted June 3, 2016 Author Share Posted June 3, 2016 Good to know. What with the centrifuge howling like a banshee as it winds down and the air compressor rattling away like a Gatling gun it's little wonder that I can clear a car park in under 10 minutes! Quote Link to comment Share on other sites More sharing options...
Bernard0405 Posted June 19, 2016 Share Posted June 19, 2016 Is it your air compressor? Quote Link to comment Share on other sites More sharing options...
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