Black_Hat

sorry for the spam but :

I have the dreaded brake booster run on and on and on .I shut the key off after the 1 min mark to save the pump incase its not the issue . It started slowly coming on 1st in the morning then after 10 min of ride, now its on all the time ..NO shut off .
I bled the pressure accumulator ...the 1st bleed was milky ...the fluid went clear after a few min . The pump still runs ..the pedal feels fine .
Now I need Porsche special tool # 9509 and the 2 associated pressure lines.
Has anyone else found a high pressure gauge that worked in the application ?
Does anyone have a #9509 for sale ? Rent ?
I do not want to start guessing and replacing parts ...they are expensive .

Had this issue on another Turbo and it was the pressure switch .

Any Ideas ?

Stefan


https://rennlist.com/forums/964-turbo-forum/446856-another-brake-booster-issue.html

Black_Hat

just picked up a used

http://buy1.snapon.com/catalog/item....re&dir=catalog