Where Do I Start?

HDFEBREZE · 06-28-2018, 04:49 AM

2010 BMW 535XI

So my car has been recently running like poop. But 40% of the time it drives and runs great. So it is an intermittent issue. Recently I've done the following.. cleaned the intake manifold ports, new ignitions coils, new spark plugs, new valve cover and valve cover gasket, fuel tank breather valve.

The rough running has got worse, today I checked the psi readings from the boost solenoids and for the first one closest to the bumper I was getting 14 psi at cold start and then it would jump to 17.5 psi after a minute or 2. For the second boost solenoid, I was getting 13.5 psi at cold start and 15 psi when warmed up. My next move was to drop everything from the bottom and give the turbos an inspection. Truthfully I wouldn't even know what to look for but I'm hoping there's some sort of rebuild kit for it.

Any suggestion is greatly appreciated, here are the codes as of today. Thanks
Engine / Motor
Fault Code: 0029CD
Fault Explanation: Misfiring, Cylinder 1
Fault Code: 0030FF
Fault Explanation: Boost pressure control, boost pressure too low
Fault Code: 002C78
Fault Explanation: Lambda probe downstream of the catalyst 2,
Signal
Fault Code: 0030FC
Fault Explanation: Boost pressure control, boost pressure too low:
Leak
Fault Code: 0029D0
Fault Explanation: Misfiring, cylinder 4
Fault Code: 0029CC
Fault Explanation: Misfiring, several cylinders
Fault Code: 0029F4
Fault Explanation: catalyst conversion
Fault Code: 0029F5
Fault Explanation: Catalyst Conversion 2
Fault Code: 0029E0
Fault Explanation: mixture control
Fault Code: 002C77
Fault Explanation: Lambda probe on the catalyst, signal
Fault Code: 002A82
Fault Explanation: Inlet VANOS
Fault Code: 003100
Fault Explanation: Boost pressure control, shutdow
Fault Code: 0029D9
Fault Explanation: Misfire at low tank level

Jklad · 06-28-2018, 08:32 PM

Have you replaced your vanos solenoids lately?

HDFEBREZE · 06-28-2018, 08:56 PM

Quote:

Originally Posted by Jklad

Have you replaced your vanos solenoids lately?

no i have not, i was thinking of taking them off today and cleaning them.

Jklad · 06-29-2018, 12:13 PM

Quote:

Originally Posted by HDFEBREZE

Quote:

Originally Posted by Jklad

Have you replaced your vanos solenoids lately?

no i have not, i was thinking of taking them off today and cleaning them.

Not a bad idea, if it was me and it's been more than 50k Miles I would just replace them and save yourself the trouble.

boostaholic786 · 06-29-2018, 01:17 PM

bump^

HDFEBREZE · 06-29-2018, 07:36 PM

this might be stupid question, but what does everyone thing of the vanos solenoids on ebay. i see them going for 2 for $30. or should i avoid them totally?

also, im thinking of just dropping the bottom and removing the turbos. im looking at the rebuild kits on ebay. might also replace the waste gate actuator and flaps and all oil and coolant seal gaskets and seals. hopefully that will do something.

06-28-2018, 04:49 AM	#1
HDFEBREZE Enlisted Member 6 Rep 30 Posts Drives: 2010 BMW 535XI Join Date: Jun 2018 Location: WINDSOR, ONTARIO iTrader: (0)	Where Do I Start? 2010 BMW 535XI So my car has been recently running like poop. But 40% of the time it drives and runs great. So it is an intermittent issue. Recently I've done the following.. cleaned the intake manifold ports, new ignitions coils, new spark plugs, new valve cover and valve cover gasket, fuel tank breather valve. The rough running has got worse, today I checked the psi readings from the boost solenoids and for the first one closest to the bumper I was getting 14 psi at cold start and then it would jump to 17.5 psi after a minute or 2. For the second boost solenoid, I was getting 13.5 psi at cold start and 15 psi when warmed up. My next move was to drop everything from the bottom and give the turbos an inspection. Truthfully I wouldn't even know what to look for but I'm hoping there's some sort of rebuild kit for it. Any suggestion is greatly appreciated, here are the codes as of today. Thanks Engine / Motor Fault Code: 0029CD Fault Explanation: Misfiring, Cylinder 1 Fault Code: 0030FF Fault Explanation: Boost pressure control, boost pressure too low Fault Code: 002C78 Fault Explanation: Lambda probe downstream of the catalyst 2, Signal Fault Code: 0030FC Fault Explanation: Boost pressure control, boost pressure too low: Leak Fault Code: 0029D0 Fault Explanation: Misfiring, cylinder 4 Fault Code: 0029CC Fault Explanation: Misfiring, several cylinders Fault Code: 0029F4 Fault Explanation: catalyst conversion Fault Code: 0029F5 Fault Explanation: Catalyst Conversion 2 Fault Code: 0029E0 Fault Explanation: mixture control Fault Code: 002C77 Fault Explanation: Lambda probe on the catalyst, signal Fault Code: 002A82 Fault Explanation: Inlet VANOS Fault Code: 003100 Fault Explanation: Boost pressure control, shutdow Fault Code: 0029D9 Fault Explanation: Misfire at low tank level
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06-28-2018, 08:32 PM	#2
Jklad Lieutenant Colonel 427 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	Have you replaced your vanos solenoids lately? __________________ 2007 E92 335i MT
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06-29-2018, 01:17 PM	#5
boostaholic786 Captain 40 Rep 622 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	bump^ __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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06-29-2018, 07:36 PM	#6
HDFEBREZE Enlisted Member 6 Rep 30 Posts Drives: 2010 BMW 535XI Join Date: Jun 2018 Location: WINDSOR, ONTARIO iTrader: (0)	this might be stupid question, but what does everyone thing of the vanos solenoids on ebay. i see them going for 2 for $30. or should i avoid them totally? also, im thinking of just dropping the bottom and removing the turbos. im looking at the rebuild kits on ebay. might also replace the waste gate actuator and flaps and all oil and coolant seal gaskets and seals. hopefully that will do something.
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