C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

hard brake pedal

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Old 11-11-2012, 06:43 PM
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2005 c230 kompressor 2003 s500 94 wrangler
hard brake pedal

to my knowledge i dont think i ever had a brake flush yet...im at 80k miles

when i had my brakes done (60k miles) only the left caliper was grinding which i still dont know why ...i sucked all the old fluid and filled with new

pedal was hard at still point i guess

my indy said my brake pins seized up on the left side so he replace them on both sides

then my vaccum pump started to leak oil

i had my mercedes indy replaced the large o ring on the vacumm pump to my knowledge it stopped the oil leaking....good news after the brake pedal didnt feel hard and felt great

about a week later the pedal started to get hard again

thank you

Last edited by sammydragon3; 11-11-2012 at 08:18 PM.
Old 11-12-2012, 08:46 AM
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06 C230 SS 6spd
Maybe it's your brake booster or the brake booster sensor?
Old 11-12-2012, 12:17 PM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
+1^

Sammy. If you put your foot on the brake pedal & then start the car does the pedal soften & drop a little? It should. If not likely a booster or vacuum problem.

Also ~ I would expect the pedal to firm up after a brake fluid change & proper system bleed. Does the car stop properly?
Old 11-12-2012, 05:48 PM
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2005 c230 kompressor 2003 s500 94 wrangler
hey glen i pushed the brakes then started the car and it did feel alot better after that

doesnt make sense if it was a vacuum problem where the hell is the cel

btw i had a p0600 if this has anything to do with it

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