Loud whistling after EGR delete - Ford Powerstroke Diesel Forum
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Old 09-17-2009, 07:42 AM
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Loud whistling after EGR delete

Had my truck in the shop for an EGR delete. The shop was horrible. Had the truck for 3 months, multiple problems when they would call to say the truck was ready so I'd have to leave it so they could continue trying to fix it.

Anyway, they had the turbo in & out so many times, they broke a few things. First it had an exhaust leak so they had to pull everything back off & replace some gaskets. Then they broke the ypipe or uppipe, whatever, from taking everything out so many times & replaced that. Then when I test drove it after that, it started leaking oil from the line that goes to the turbo so they fixed that.

So this whistling sound is extremely loud. The truck makes good boost & drives fine & according to the idiots, I mean repair shop, it's making good exhaust back pressure so they said it can't be a leak. The turbo did go out a couple times. While driving, the whistling would go away & no boost. I traced that to the connector that goes to the VGT solenoid. They broke the connector so it was making an intermittent connection.

If I disconnect the VGT solenoid, there's no more whistling, but of course no boost. It seems to me like it's an exhaust leak. Or could it be that the vanes in the turbo are not doing what they need to do? The boost spools up really quickly, so could the solenoid not be opening the vanes under load like they should?
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Old 09-17-2009, 07:53 AM
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Forgot to say. '04 6.0L with bullydog programmer & cold air intake. No other mods as far as I know. Bought the truck with 125,000, has 140,000 now.
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Old 09-17-2009, 07:54 AM
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what EGR delete kit was used?
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Old 09-17-2009, 07:56 AM
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does the whistle sound like a tea kettle?
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Old 09-17-2009, 07:59 AM
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Not sure what kit was used.

Yeah, I guess it could be classified as a tea kettle.
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Old 09-17-2009, 08:04 AM
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Also, being somewhat mechanically challenged when it comes to diesels, I'm not sure if they did an EGR delete or just the EGR cooler delete. The initial problem was blown EGR cooler. Having no knowledge of diesels, I'm not sure if the EGR & the cooler are one piece or seperate pieces.
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Old 09-17-2009, 08:06 AM
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Quote:
Originally Posted by Deltaskier View Post
Not sure what kit was used.

Yeah, I guess it could be classified as a tea kettle.
Might possably have a crack in the flex part of the y pipe
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Old 09-17-2009, 08:08 AM
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could be a flex section in the up pipe...does it sound like metal to metal?
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Old 09-17-2009, 08:51 AM
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No, it doesn't sound like metal to metal. Just sounds like a loud sucking noise.
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Old 09-17-2009, 08:53 AM
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if the piece they used to delete the cooler isnt tiaght and sealed against the bottom of the intake it will whistle loud and also as said before , a possible exhaust leak
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