no boost and trunk not opening

Mp01dami · 03-21-2019, 10:28 PM

Hey,

Just did a valve cover gasket switch and now I have no boost at all. This is the main issue and I need help.

Vacuum seams fine at ~10 with JB4 and 26 with the lag setting to max, measured at solenoids.

While doing the gasket I didn't remove the battery+... so while removing the red cable across the top of the motor it shorted to ground, quickly and I moved it away. Not sure if its related but I lost the trunk power opener and need to use the key for now... Question, what fuse controls this and can it be related to the NO boost?

Codes:
30FF
30FC

Runs fine when i'm not demanding boost but as soon as I demand it there is none.

MysticRob · 03-22-2019, 12:41 PM

38 views at this thread and no answers. Easy to see why, OP, you've already told us what the problem is, yet for some reason you're here scratching your head. If you're smart enough to install a new valve cover gasket you should be able to figure this out.

Obviously you caused the issue with either your gasket work and/or your shorting the electrics. Recheck and correct all fuse and vacuum line issues. Then check for voltage at effected motors and solenoids (i.e. trunk release, and vacuum solenoids) and change out any blown bits. Make the multimeter your friend.

03-21-2019, 10:28 PM	#1
Mp01dami Registered 0 Rep 1 Posts Drives: BMW 135I Join Date: Mar 2019 Location: California iTrader: (0)	no boost and trunk not opening Hey, Just did a valve cover gasket switch and now I have no boost at all. This is the main issue and I need help. Vacuum seams fine at ~10 with JB4 and 26 with the lag setting to max, measured at solenoids. While doing the gasket I didn't remove the battery+... so while removing the red cable across the top of the motor it shorted to ground, quickly and I moved it away. Not sure if its related but I lost the trunk power opener and need to use the key for now... Question, what fuse controls this and can it be related to the NO boost? Codes: 30FF 30FC Runs fine when i'm not demanding boost but as soon as I demand it there is none.
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03-22-2019, 12:41 PM	#2
MysticRob Captain 573 Rep 870 Posts Drives: 2009 335i E90 Join Date: Jan 2017 Location: Fremont, CA iTrader: (0) Garage List 2009 BMW 335i E90 S ... [10.00]	38 views at this thread and no answers. Easy to see why, OP, you've already told us what the problem is, yet for some reason you're here scratching your head. If you're smart enough to install a new valve cover gasket you should be able to figure this out. Obviously you caused the issue with either your gasket work and/or your shorting the electrics. Recheck and correct all fuse and vacuum line issues. Then check for voltage at effected motors and solenoids (i.e. trunk release, and vacuum solenoids) and change out any blown bits. Make the multimeter your friend. __________________ 2008 E61 535xi Sport Wagon / 100k Miles / Deep Sea Blue Metallic / Natural Brown Interior / MHD Stage 1 91 CA-Octane Tune. SOLD - 2009 E90 335i M-Sport Sedan / 143k Miles / Alpine White Exterior / Chestnut Brown Interior / Mishimoto FMIC / xHP Stage 2.
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