NAM_killer Posted July 13, 2018 Share Posted July 13, 2018 Hi guys, I've been diagnosing a very high pitched whistle for the last couple of weeks While getting my new suspension geometry sorted the mechanics have confirmed that it's coming from the throttle body. I'm wondering if anyone has a mkiv VVTI that I can drive to and pop the throttle body on mine to verify that the noise is gone before I buy one. Happy to throw a few quid your way for your time or bring some beers with me Thanks in advance. Quote Link to comment Share on other sites More sharing options...
evinX Posted July 13, 2018 Share Posted July 13, 2018 If its a high pitched noise itll be a loose hose? Quote Link to comment Share on other sites More sharing options...
NAM_killer Posted July 13, 2018 Author Share Posted July 13, 2018 I checked the hoses and they all seem fine. Sounds exactly like this: Quote Link to comment Share on other sites More sharing options...
evinX Posted July 13, 2018 Share Posted July 13, 2018 I checked the hoses and they all seem fine. Sounds exactly like this: Vaccum line somewhere? to me id say thats an air leak, dont see how the throttle body can 'leak' unless its worn and sucks too much air in at idle resulting in higher idle. Quote Link to comment Share on other sites More sharing options...
NAM_killer Posted July 13, 2018 Author Share Posted July 13, 2018 Idle is fine and the noise goes away after ~10 mins of driving. It's only there when my foot is off the throttle too which is weird. I can spray some carb cleaner around the vacuum lines when I get the car back but like I said the mechanics reckon it's the TB or a gasket between it and the throttle cable, so it would be good to see if putting someone else's TB on helps at all before I dish out the money for a replacement. Quote Link to comment Share on other sites More sharing options...
SupraLEDrears Posted July 14, 2018 Share Posted July 14, 2018 Spray some water on the inside of the fanbelt whilst engines running. Quote Link to comment Share on other sites More sharing options...
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