Compression Ignition Addict
Join Date: May 2007
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Possible stuck turbo vanes or ???
After running my 05 PSD for any length of time...if I shut it down I'm not really getting a nice silent spool down of the turbo. It's sort of "noisy" in my opinion. After all else is silenced...the turbo is still spinning down and it kinda sounds like its "rubbing" something slightly...although I'm sure its not really doing that or it would have come apart by now. The inducer fan blades are not touching and the shaft play is nill if anything. The truck runs great otherwise as far as I know.
Could carboned up vanes stick and cause strange noises if they are not doing what they are supposed to do upon shutdown? I also don't get much "whistle" at idle like I've heard other trucks. The exhaust note at idle doesn't really sound like it even has a turbo.
The spool up upon acceleration is good and the psi readings show what could be considered normal.