Car was normal when I parked it Friday... - BMW 3-Series (E90 E92) Forum

Carl Morris · 04-15-2012, 09:53 PM

...and today when I drove it I had what felt like no boost (Cobb said ~3psi) and it was throwing codes P2AAF and P30FF. At one point it said something about fuel pump on the display. I tried a different Cobb map, no change. So I uninstalled the Cobb and it immediately threw the codes again and still won't boost. So anyway, at least it reproduces in stock mode, guess I'll call the dealership tomorrow. I hope they can get it in soon, I don't like driving around with no boost :-).

Alfred · 04-15-2012, 11:01 PM

Good thing its still under warranty

Carl Morris · 04-15-2012, 11:07 PM

Just CPO. We'll see how that goes...

mattsfeir · 04-16-2012, 06:30 AM

Could be a vacuum line, but mine went slowly over time and ended up at really low boost, not sudden like yours.

Search for a thread started by me in the N54 section for how to diagnose and fix if needed.

Bimmer This · 04-16-2012, 08:34 AM

sounds like you got a boost leak somewhere.

Carl Morris · 04-17-2012, 01:12 PM

Turned out to be two things. They say there's a bad fuel pressure sensor (I assume it's the low pressure side from the logs) and they say a C-clamp broke or fell from from a wastegate actuator, hence the zero boost.

Anybody heard of that particular failure mode on the WGAs? It's supposed to be covered under CPO, otherwise I'd be looking for some RBs.

Dackz · 04-17-2012, 01:50 PM

Quote:

Originally Posted by Carl Morris

Turned out to be two things. They say there's a bad fuel pressure sensor (I assume it's the low pressure side from the logs) and they say a C-clamp broke or fell from from a wastegate actuator, hence the zero boost.

Anybody heard of that particular failure mode on the WGAs? It's supposed to be covered under CPO, otherwise I'd be looking for some RBs.

Why couldnt you just put a new c-clamp on it if it wasnt covered?

Carl Morris · 04-17-2012, 03:09 PM

Yes, but I'm taking them at their word that it's a total pain to get to. My hope and intention is to never have to dig that far into it without actually upgrading the turbos. Small turbos are extremely limiting at our elevation.

Carl Morris · 04-19-2012, 07:27 PM

It was the front one. I paid $50 CPO, dealer is charging BMW over $1500 at the reduced labor rate for that plus the new fuel pressure sensor.

mattsfeir · 04-19-2012, 08:16 PM

Ouch, good thing for CPO.

Unless you were waiting for a reason to upgrade.

Carl Morris · 04-19-2012, 11:44 PM

Not yet. But when the CPO is gone that's all the excuse I would need. I just hope the big singles are common and cheap by then. Or at least a little more common than today.

04-15-2012, 09:53 PM	#1
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	Car was normal when I parked it Friday... ...and today when I drove it I had what felt like no boost (Cobb said ~3psi) and it was throwing codes P2AAF and P30FF. At one point it said something about fuel pump on the display. I tried a different Cobb map, no change. So I uninstalled the Cobb and it immediately threw the codes again and still won't boost. So anyway, at least it reproduces in stock mode, guess I'll call the dealership tomorrow. I hope they can get it in soon, I don't like driving around with no boost :-).
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04-15-2012, 11:01 PM	#2
Alfred Colonel Drives: 2007 BMW 335I Join Date: Mar 2010 Location: Broomfiled, CO Posts: 2,675 iTrader: (4)	Good thing its still under warranty __________________ 2007 335i Space Gray \| JB3 2.0 --> PROcede V4 \| BMS DCI \| AR Design DP's \| Tial BOV with Cp-e charge pipe \| CDV Delete \| 19" iForged Wheels Best 1/4 time = 13.6 @ 106.6 (with JB3) at Bandimere Speedway (5800' above sea level)

04-16-2012, 06:30 AM	#4
mattsfeir Lieutenant Drives: 335xi Join Date: Oct 2009 Location: CO Posts: 443 iTrader: (1)	Could be a vacuum line, but mine went slowly over time and ended up at really low boost, not sudden like yours. Search for a thread started by me in the N54 section for how to diagnose and fix if needed. __________________ 2007 335xi 6AT / Vishnu Procede V5 / Vishnu DCI / Vishnu Meth kit (PWM) / AR Catless downpipes / Borla racing pipes with Magnaflow muffler / Borla exhaust system / AMS intercooler Best 1/4 time = 12.975 @ 107.15, 1.763 60' at Bandimere Speedway (5800' above sea level)

04-19-2012, 08:16 PM	#10
mattsfeir Lieutenant Drives: 335xi Join Date: Oct 2009 Location: CO Posts: 443 iTrader: (1)	Ouch, good thing for CPO. Unless you were waiting for a reason to upgrade. __________________ 2007 335xi 6AT / Vishnu Procede V5 / Vishnu DCI / Vishnu Meth kit (PWM) / AR Catless downpipes / Borla racing pipes with Magnaflow muffler / Borla exhaust system / AMS intercooler Best 1/4 time = 12.975 @ 107.15, 1.763 60' at Bandimere Speedway (5800' above sea level)

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04-15-2012, 11:07 PM	#3
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	Just CPO. We'll see how that goes...

04-16-2012, 08:34 AM	#5
Bimmer This Major General Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster Posts: 6,482 iTrader: (3)	sounds like you got a boost leak somewhere.

04-17-2012, 01:12 PM	#6
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	Turned out to be two things. They say there's a bad fuel pressure sensor (I assume it's the low pressure side from the logs) and they say a C-clamp broke or fell from from a wastegate actuator, hence the zero boost. Anybody heard of that particular failure mode on the WGAs? It's supposed to be covered under CPO, otherwise I'd be looking for some RBs.

04-17-2012, 03:09 PM	#8
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	Yes, but I'm taking them at their word that it's a total pain to get to. My hope and intention is to never have to dig that far into it without actually upgrading the turbos. Small turbos are extremely limiting at our elevation.

04-19-2012, 07:27 PM	#9
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	It was the front one. I paid $50 CPO, dealer is charging BMW over $1500 at the reduced labor rate for that plus the new fuel pressure sensor.

04-19-2012, 11:44 PM	#11
Carl Morris Lieutenant Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: Boulder, CO Posts: 552 iTrader: (0)	Not yet. But when the CPO is gone that's all the excuse I would need. I just hope the big singles are common and cheap by then. Or at least a little more common than today.