Question about brake pedal...??

Darin911 · 03-24-2010, 08:26 PM

when i start my car i need to press on the brrake pedal to start it. but lately when i press down onto it its stiff and i need to press down on it pretty hard in order to start it?
has anyone had this problem before?

thanks in advance

Darin

bma · 03-24-2010, 08:29 PM

ROFL it's 'brake pedal' dude.

m3user · 03-24-2010, 08:30 PM

To my knowledge, only some Toyotas have break pedals. All others have brakes. Sorry, couldn't resist.

CollinsE90 · 03-24-2010, 08:35 PM

did i forget i was in OT?

Nr!qUe · 03-24-2010, 08:41 PM

that happens when you have the engine off and you pump the brake pedal, it gets stiffer and stiffer and then loosens once you start the engine again.

If that's not the reason its happening to you, then i dont know what it is. Maybe get it checked

JayKay335i · 03-24-2010, 08:53 PM

There is a valve in the system that is defective. There is a bulletin out on fixing it/replacing it under warranty for that problem. I believe it has something to do with leaking fluid back into the system and causing the pedal to become hard while the car is turned off. Take it to the dealer if it bothers you or just wait till your next service and mention it.

Darin911 · 03-24-2010, 10:02 PM

Quote:

Originally Posted by JayKay335i

There is a valve in the system that is defective. There is a bulletin out on fixing it/replacing it under warranty for that problem. I believe it has something to do with leaking fluid back into the system and causing the pedal to become hard while the car is turned off. Take it to the dealer if it bothers you or just wait till your next service and mention it.

last month i had BMW change brake fluid....would that be a reason? and they didnt do a good job??

chromisdesigns · 03-24-2010, 10:08 PM

There is a check valve in the brake boost system that is supposed to retain vacuum after the engine is shut off, so you won't have a hard brake pedal. If this valve starts leaking, your symptom is the result.

A lot of people just ignore it, but you can get the valve and/or brake booster (sometimes the problem, too) repaired under warranty if it bothers you.

dreamnmotion · 03-24-2010, 10:14 PM

yeah it's the brake booster, I just ignore mine. I always forget to mention it when I take in it for service.

Darin911 · 03-24-2010, 10:40 PM

so next year when i take it into service i should mention it to them? and i have another question i got an AFE intake, Borla exhaust a coilovers should i take then out when i go in for service?

chromisdesigns · 03-25-2010, 12:43 AM

Quote:

Originally Posted by Darin911

so next year when i take it into service i should mention it to them? and i have another question i got an AFE intake, Borla exhaust a coilovers should i take then out when i go in for service?

Intake, yes -- but how are you going to take off the exhaust and coilovers everytime it needs to go in for service? Just isn't practical, I wouldn't think.

dreamnmotion · 03-25-2010, 12:58 PM

I didn't take off my DCI when I went in for service last year, they were gonna change my intake filter, but told me that I have two "cannons" in there already, so they just gave me the filter itself. Nothing happened, maybe it's just for this dealer.

rault18 · 03-25-2010, 01:04 PM

nothing that u saw happened...usually they take pics of the engine bay and keep it on the records to decline any kind of warrannty that is directly related with that part

e92phreak · 03-25-2010, 01:07 PM

This is a brake booster problem. BMW has to replace the vacuum pump assembly. Let me find the TSB.

e92phreak · 03-25-2010, 01:14 PM

Here is the SIB:
http://www.bmwtis.com/tsb/bulletins/...p/B340607g.htm

I printed this out last week and brought it into the dealer.

The interesting thing is that they replaced the part again (my 2nd time) and still found noticeable issues. They compared with another car and mine seemed different. So they replaced it with another new vacuum pump and now it seems fine.

03-24-2010, 08:26 PM	#1
Darin911 Captain 159 Rep 919 Posts Drives: First E92 to E90 conversion! Join Date: Mar 2009 Location: Markham iTrader: (2)	Question about brake pedal...?? when i start my car i need to press on the brrake pedal to start it. but lately when i press down onto it its stiff and i need to press down on it pretty hard in order to start it? has anyone had this problem before? thanks in advance Darin __________________ Last edited by Darin911; 03-24-2010 at 08:34 PM..
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03-24-2010, 08:29 PM	#2
bma Private First Class 18 Rep 160 Posts Drives: 09 E92 335i Join Date: Aug 2008 Location: Newfoundland iTrader: (3)	ROFL it's 'brake pedal' dude.
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03-24-2010, 08:30 PM	#3
m3user New Member 0 Rep 14 Posts Drives: '13 e93 M3 Join Date: Feb 2010 Location: So. Cal. iTrader: (0)	To my knowledge, only some Toyotas have break pedals. All others have brakes. Sorry, couldn't resist.
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03-24-2010, 08:35 PM	#4
CollinsE90 Where my bitches 743 Rep 1,924 Posts Drives: Cadillac coupe deville Join Date: Mar 2009 Location: street corner checking profits iTrader: (0)	did i forget i was in OT? __________________
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03-24-2010, 08:41 PM	#5
Nr!qUe Captain 70 Rep 975 Posts Drives: 2009 E90 LCI 328i 6MT Join Date: Nov 2008 Location: Miami, FL iTrader: (3)	that happens when you have the engine off and you pump the brake pedal, it gets stiffer and stiffer and then loosens once you start the engine again. If that's not the reason its happening to you, then i dont know what it is. Maybe get it checked __________________ 2009 BMW E90 328i \| Xenons \| MT \| Space Gray \| Beige-ette \| CF Fabric Trim \| iPod/USB \| 20% Tints \| Euro-Plate \| Rear Fog Switch Lego Mod \| Painted Reflectors \| Performance Short-shift Kit \| Style 197 Wheels \| OEM Sport Suspension \|
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03-24-2010, 08:53 PM	#6
JayKay335i Banned 189 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	There is a valve in the system that is defective. There is a bulletin out on fixing it/replacing it under warranty for that problem. I believe it has something to do with leaking fluid back into the system and causing the pedal to become hard while the car is turned off. Take it to the dealer if it bothers you or just wait till your next service and mention it.
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03-24-2010, 10:08 PM	#8
chromisdesigns Lieutenant Colonel 45 Rep 1,754 Posts Drives: 2008 BMW 335i sedan Join Date: Jan 2010 Location: San Francisco iTrader: (0)	There is a check valve in the brake boost system that is supposed to retain vacuum after the engine is shut off, so you won't have a hard brake pedal. If this valve starts leaking, your symptom is the result. A lot of people just ignore it, but you can get the valve and/or brake booster (sometimes the problem, too) repaired under warranty if it bothers you.
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03-24-2010, 10:14 PM	#9
dreamnmotion Second Lieutenant 8 Rep 253 Posts Drives: 2007 335i sedan Join Date: Jul 2007 Location: Houston iTrader: (1)	yeah it's the brake booster, I just ignore mine. I always forget to mention it when I take in it for service. __________________
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03-24-2010, 10:40 PM	#10
Darin911 Captain 159 Rep 919 Posts Drives: First E92 to E90 conversion! Join Date: Mar 2009 Location: Markham iTrader: (2)	so next year when i take it into service i should mention it to them? and i have another question i got an AFE intake, Borla exhaust a coilovers should i take then out when i go in for service? __________________
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03-25-2010, 12:58 PM	#12
dreamnmotion Second Lieutenant 8 Rep 253 Posts Drives: 2007 335i sedan Join Date: Jul 2007 Location: Houston iTrader: (1)	I didn't take off my DCI when I went in for service last year, they were gonna change my intake filter, but told me that I have two "cannons" in there already, so they just gave me the filter itself. Nothing happened, maybe it's just for this dealer. __________________
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03-25-2010, 01:04 PM	#13
rault18 Lieutenant 19 Rep 410 Posts Drives: 06 330i Join Date: Nov 2009 Location: las vegas iTrader: (2)	nothing that u saw happened...usually they take pics of the engine bay and keep it on the records to decline any kind of warrannty that is directly related with that part
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03-25-2010, 01:07 PM	#14
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	This is a brake booster problem. BMW has to replace the vacuum pump assembly. Let me find the TSB. __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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03-25-2010, 01:14 PM	#15
e92phreak General 384 Rep 21,747 Posts Drives: E92 335i TiAg/E46 323i TiAg Join Date: Mar 2007 Location: CA iTrader: (1) Garage List 2007 E92 335i [9.50] 2000 E46 323i [0.00]	Here is the SIB: http://www.bmwtis.com/tsb/bulletins/...p/B340607g.htm I printed this out last week and brought it into the dealer. The interesting thing is that they replaced the part again (my 2nd time) and still found noticeable issues. They compared with another car and mine seemed different. So they replaced it with another new vacuum pump and now it seems fine. __________________ 07 E92 335i \| TiAg \| Step \| Padl \| Cmft \| Alum Trm \| PDC \| Nav \| Assist \| Sat \| Lthr \| Prem \| Sprt \| Rear Splr \| RDSport Quads \| iPod \| V1 \| LT Refl \| VS Clear Bra \| OEM Lip \| KWV2 \| Mtec Sides \| BBS LM-R 00 E46 323i \| TiAg \| 5sp \| Sport \| Roof \| RDSport Cams \| RDSport tune \| RDSport Shift \| Volk LE37 \| M3 spoiler \| PSS9 \| SuperSprint \| Brembo
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