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OEM Diverter valve change, now I am hearing blow off sound??

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Old 04-25-2016, 04:38 PM
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Jabrony
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Default OEM Diverter valve change, now I am hearing blow off sound??

Is this common? The original OEM Bosch DVs were not failing but I figured that I would replace them when I did my 30,000 service along with plugs and solenoids. I had never noticed that noise before the change to replacement DV's.

Thank you for your help.
Old 04-25-2016, 07:01 PM
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T10Chris
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I had the same thing happen to me, double check all of your connections. I found something had came loose.
Old 04-25-2016, 07:27 PM
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Kevin
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Pressure test your intake system. And then pressure test it again for practice
Old 04-25-2016, 08:53 PM
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Jabrony
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Thank you Sir...Thank you Kevin..... Love the practice advice...
Old 04-26-2016, 12:51 AM
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z06801
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I swapped mine out for some Kayser brand from Pelican so I could send my Evoms units back to be rebuilt. Was getting secondary air codes so I suspected leaking or worn out DVs, Now I do to hear a slight honk coming off low boost accelerations do I'm still getting the the same 0491 0492 codes for the secondary air.
Old 04-26-2016, 01:27 AM
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Jabrony
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I have not seen any codes in quite a while. However, prior to the replacement I was getting the same 0491/0492 codes....weird...
Old 04-26-2016, 08:42 AM
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levinsje
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It happened to me last week.
The fix was very easy as one of the diverter valve hoses came off.
5 minute fix but I needed to clear the check engine code with Durametric before the limp mode would turn off.
Old 04-26-2016, 02:08 PM
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ducnine
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Our cars are not supposed to make that blow off "whoosh" sound?
I assumed all turbos had some noise, but in my car I have not been able to distinguish any sort of Turbo noise.
Old 04-26-2016, 11:21 PM
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jerry1847
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the oem intake and exhaust setup mute all the turbo sound.

If we had an intake option that deleted the air box and replaced it with a cone filter you would probably hear the turbos loud and clear.



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