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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Zero boost after pop sound from engine, half-engine light on, codes for boost solenoi



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      07-08-2017, 08:01 PM   #1
ITVTI
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Zero boost after pop sound from engine, half-engine light on, codes for boost solenoi

I was on the highway and while applying about half throttle I heard a sudden pop sound, like the sound of turbo intake piping popping off or something like that and immediately went into limp mode with half engine light. I scanned for codes and it had a couple codes related to the boost control solenoid. I made it home with the reduced power and while investigating in the morning I found the boost control solenoid sensor cable had unplugged itself (the one tothe right and below the air filter box, before the diverter valves along the tubing). I plugged it back in and it eliminated the half-engine light and other codes, and it resumed reading proper vacuum in the MHD app, but still has zero boost, as in absolutely zero boost. Is the boost control solenoid fried? Any other thoughts or suggestions before I replace the boost solenoid/sensor?
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      07-08-2017, 08:03 PM   #2
agustincuenca
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have you checked the chargepipe or diverter valves?
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      07-08-2017, 08:13 PM   #3
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^ most likely chargepipe if stock broke.

Here's what the OEM charge pipe looks like (when the stock air intake box is removed):

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      07-08-2017, 10:36 PM   #4
mweisdorfer
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Check the connection between the charge pipe and lower charge pipe
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      07-10-2017, 10:12 AM   #5
rsyed07
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+1 on the chargepipe, same exact noise and occurrence happened to me at 47k miles. Drove it home in limp mode with half engine light and replaced it with a new one.
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      07-10-2017, 11:08 AM   #6
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not sure if this has been said yet but your chargepipe probably popped off
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      07-10-2017, 11:25 AM   #7
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That happened to me. My chargepipe broke (unfixable). I replaced it with one from BMS. All good now.

This is what my broken chargepipe looked like:
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Last edited by lordbmw; 07-10-2017 at 11:34 AM.
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      08-10-2017, 03:44 PM   #8
ITVTI
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Sorry for not replying sooner. It was the charge pipe popping off. I was able to double clamp it back on since only a relatively small piece cracked off the end. I'll probably get an aftermarket one eventually. Thanks
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      08-11-2017, 02:14 AM   #9
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no boost

if is a N 55 you just blew off your charge pipe. Check it if first, before spending any money, you tighten it up like a raditor hose
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      08-11-2017, 02:17 AM   #10
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intercooler * charge pipe n 55 3351 2011 e 90

What is the best kit for this application.

I know y'all have not spent any money to find out what wrks best

Help
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