turbo boost question
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turbo boost question
i just had my 05 psd at the dealership for a turbo cleaning.when i called to check on status they said they had turbo off and tech was "sandblasting"it.ive read the tech article on here and was wondering if sandblasting was a normal practice?also since the truck was returnred it seems to be lower on boost.im only using factory boost gaude so i know its not exactly accurate but it always seemed to be around 27-30 psi before service but now it stops at 20 psi every time.thanx for any info.
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so i spoke to the dealer about my boost issue and the tech told me anything over 20lbs was normal which i thought was a little vague.when i told him it was originaly around 29lbs he looked at me as if i had 3 heads.off to the dealership it goes again monday.
Hotshot
Joined: Jul 2005
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From: Middle Tn.
29 is pushing the outside limits. Everyone I know with a 6.0 are usually between 22 and 26 with a load. Our boost gauges are pretty acccurate the sweep could have been expanded however for more accurate reading.
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From: Green Lane, Pa.
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Mountain Pass
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I recently took trip up north with -20 temps and had some issues with fuel gelling. I noticed my turbo boost is running a full 10 now when on interstate (level ground). I have a new fuel filter set to change (I am due anyway). I don't remember the boost being that high before - I think that is why it seemed out of the ordinary.
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Fleet Mechanic
Joined: Oct 2007
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From: Henderson, NV
I recently took trip up north with -20 temps and had some issues with fuel gelling. I noticed my turbo boost is running a full 10 now when on interstate (level ground). I have a new fuel filter set to change (I am due anyway). I don't remember the boost being that high before - I think that is why it seemed out of the ordinary.
Mountain Pass
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I have not tinkered with EGR so it should be ok.
Post Fiend
Joined: Oct 2005
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From: Plano TX and Brentwood TN
That would help explain your headgasket problems.
Post Fiend
Joined: Oct 2005
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From: Plano TX and Brentwood TN
Vanes sticking could do it, which would relate to an EGR system concern.
If you are running a programmer(particular a heavy ad brand like Banks, Edge, BullyDog etc), those have been known to cause overboost conditions such as that. Even some SCT programs from certain tuners(people) have been known to cause high boost numbers, it just depends on what they did in their programming.
Even having the tuner could cause the vanes to stick as well and there you have an overboost(that's what I would call an overboost anyway, it may not trigger the actual DTC saying overboost condition).
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ive read on hear u dont wanna go over 26-28 psi boost but one thing on the new truck 05 and up the factory boost gauge has a red area that goes from 35psi to 40psi so most people would think 35psi was on the edge of acceptable boost pressure.