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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Boost Solenoids.



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      03-19-2019, 10:02 AM   #1
JDang
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Boost Solenoids.

I'm posting this to see if anyone has experience with boost solenoids working perfectly fine, but then "times out" and only boosts to 17psi? As in WGDC and WGDC after PID are exactly identical for the remainder of the time until I restart the car then it starts working normally again with full boost to 24. No, I do not have a boost leak.

Just looking to hear opinions before I pull the trigger on new solenoids from FCPEuro.

Thanks for reading.
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      03-19-2019, 11:12 AM   #2
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      03-20-2019, 05:36 AM   #3
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Quote:
Originally Posted by JDang View Post
I'm posting this to see if anyone has experience with boost solenoids working perfectly fine, but then "times out" and only boosts to 17psi? As in WGDC and WGDC after PID are exactly identical for the remainder of the time until I restart the car then it starts working normally again with full boost to 24. No, I do not have a boost leak.

Just looking to hear opinions before I pull the trigger on new solenoids from FCPEuro.

Thanks for reading.
How old are they ?
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      03-20-2019, 10:38 AM   #4
Milan
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Quote:
Originally Posted by JDang View Post
I'm posting this to see if anyone has experience with boost solenoids working perfectly fine, but then "times out" and only boosts to 17psi? As in WGDC and WGDC after PID are exactly identical for the remainder of the time until I restart the car then it starts working normally again with full boost to 24. No, I do not have a boost leak.

Just looking to hear opinions before I pull the trigger on new solenoids from FCPEuro.

Thanks for reading.
I have two sets of solenoids from my old cars I could sell you for super cheap if you want to troubleshoot without paying for new! Shoot me a PM
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      03-20-2019, 10:27 PM   #5
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OP, what are you using to monitor the boost solenoids?
How do you know they're not working as intended?


Here's a good video to troubleshoot boost solenoids:

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