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Turbo rise and fall at idle

2K views 12 replies 2 participants last post by  Tuscany 
#1 ·
I have a 2003 6.0l. At idle every 15-20 seconds my turbo whistle will quiet way down like it quit spinning. Then 15-20 seconds it gets loud again (straight piped) I've never heard another truck do this. It spools up fast when the pedal hits the floor and I can pull 30+ pounds of boost but is it normal for the turbo to do that?
 
#2 ·
That's normal. It is part of your truck's strategy code. Ford incorporated the vane sweep that you are experiencing to try to keep the vanes from sticking.

Whereabouts in Ohio are you from?
 
#3 ·
That's great news. Didn't know if my waste gate was failing or what. Thanks
 
#8 ·
Thanks I have found a lot of useful info on here. Awesome looking truck:liar:
 
#11 ·
If you ever need any work done on that thing let me know lol. I'm doing a complete engine swap for another member on here as we speak. Just gotta pull this engine (hopefully by Wednesday that will be done) and then wait on the new engine to arrive.
 
#12 ·
Ok I'll keep that in mind yea I found out about the 03 issues after I bought it. Trying to work thru it lol
 
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