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no power brakes

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Volkswagen >> VW MODELS >> Volkswagen Jetta >> no power brakes

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no power brakes - 4/24/2008 7:03:33 PM

woody1

Posts: 87
Joined: 3/17/2008
From: Lake Orion,MI
Status: offline

today my 2001 jetta lost power brakes for a short time. i was pulling out of a parking spot in reverse and found that the brake assist had stopped working. i checked the brake fluid it was full and did not notice a vacume leak(although i was fairly upset and was rushed to punch back in for lunch). after work i went out to see if i could drive it home. i noticed that as the engine rpms rasied the system charged but would not recharge at lower rpms after pumping the pedel 2 or 3 times. however, after 5or 10min of this, the system started working normaly. i decided to drive it home and it did not happen the whole ride home. i was thinking the power booster, but if the diaphragm was damaged i would think the that the assist would be lost pemanently but i dont know for sure. not to mention i did not check the vacume lines well.

any ideas

Post #: 1

RE: no power brakes - 4/25/2008 3:07:12 PM

bagel

Posts: 1348
Joined: 8/16/2005
Status: offline

what did the pedal feel like? If it's real hard then you booster would be losing vacuum. Check your fluid again after you pump the brakes a few times, if it drops then you have a leak somewhere. I'm really trying to rack my brain on this, I kinda know the system but for it to loose power and then come back is kinda weird....

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00 Jetta VR6 GLS 12V 2.8L
Magnaflow Exhaust
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Eurosport Underdrive Pulley
GIAC Chip
Diamond Mesh Front Grill
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18" ADR Rims
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(in reply to woody1)

Post #: 2

RE: no power brakes - 4/26/2008 11:39:24 AM

woody1

Posts: 87
Joined: 3/17/2008
From: Lake Orion,MI
Status: offline

the fluids are full.. the pedel was stiff like when the car is off and u hit the brakes. am i right to think if it was the booster the power brakes would go out completly.

(in reply to bagel)

Post #: 3

RE: no power brakes - 4/26/2008 11:48:16 AM

bagel

Posts: 1348
Joined: 8/16/2005
Status: offline

Yea I would, not sure but it would be the booster.

_____________________________

00 Jetta VR6 GLS 12V 2.8L
Magnaflow Exhaust
Custom Cold Air Intake
Eurosport Underdrive Pulley
GIAC Chip
Diamond Mesh Front Grill
Smoked Euro Tail Lights
18" ADR Rims
www.myspace.com/volkswagenforums
http://air2water.2ksite.com

(in reply to woody1)

Post #: 4

RE: no power brakes - 4/26/2008 1:09:16 PM

woody1

Posts: 87
Joined: 3/17/2008
From: Lake Orion,MI
Status: offline

thare isent anything other than the booster and the lines right. if any thing went wrong it would be one ofthe 2 right

(in reply to bagel)

Post #: 5

RE: no power brakes - 4/27/2008 9:40:10 AM

woody1

Posts: 87
Joined: 3/17/2008
From: Lake Orion,MI
Status: offline

ok id like to reword the symtoms of the brakes. after driving the car more often if notice that the assist is only acting up during the first startup after siting for awile. and its not that thay go out completly but dont rebuild presser fast enough. but gose away after a few min..

(in reply to woody1)

Post #: 6

RE: no power brakes - 4/27/2008 10:14:25 AM

bagel

Posts: 1348
Joined: 8/16/2005
Status: offline

I still say have the vacuum booster checked out. Maybe there's a line that's messed up

_____________________________

00 Jetta VR6 GLS 12V 2.8L
Magnaflow Exhaust
Custom Cold Air Intake
Eurosport Underdrive Pulley
GIAC Chip
Diamond Mesh Front Grill
Smoked Euro Tail Lights
18" ADR Rims
www.myspace.com/volkswagenforums
http://air2water.2ksite.com

(in reply to woody1)

Post #: 7