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Old 03-15-2017, 06:22 PM   #8
Paul
Porsche "Purist"
 
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Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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I've never known a failing booster or check valve to lock the brakes....I'm assuming "completely locked up" means the car cannot move.

Read the codes. I'm assuming from the OP's post that he has called the dealer and has not taken the car in yet.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.

Last edited by Paul; 03-15-2017 at 06:51 PM.
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