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post #1 of 7 (permalink) Old 09-02-2008, 10:37 PM Thread Starter
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Need help!

When I floor the gas and let off and try to apply the brake I get a hard pedal. Also when I do get the car to a stop which is hard to do my car barely idles. If I give it a little gas I can keep it running but runs like crap and still no brakes. I get good boost and vacuum from what I can tell from the boost gauge. I dont hear a hiss when I press the brakes so I didnt think it was my booster. The other day I did notice my brake light came on when I started it but my fluid seemed full. Im kinda stuck on what it could be. Today I popped the hood and found the part in the pic laying on top of my throttle body. I know it has to do with the vacuum lines but not sure where it goes. I didnt think this little hose would cause this but I figured I would ask. This has happened twice to me so far and im worried something bad could happen. This only happens when I give it hard boost. Please help!!


Sorry for the big pic but I want everyone to see everything.

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post #2 of 7 (permalink) Old 09-02-2008, 10:43 PM
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thats a check valve and it poped off somewhere creating a vaccum leak hence why the car is running rough and no or little vaccum to the brakes

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post #3 of 7 (permalink) Old 09-02-2008, 10:59 PM
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Do you still have the vacuum diagram sticker, usually on the fan shroud? It should show where that part goes. Your symptoms sound like a classic vacuum leak.

I don't know exactly how the SC is set up, but most supercharged cars use a vacuum canister to operate the vacuum-assisted power brakes. When idling or cruising under no boost, the canister has a vacuum pulled on it. When under boost (hence no vacuum), the canister operates the brake booster and, I assume, anything else that needs vacuum. The check valve isolates the canister when under boost.

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post #4 of 7 (permalink) Old 09-02-2008, 11:01 PM
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hmmm...i dont ever remember seeing that piece,
i will look in the morning if no one can tell you by then.
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post #5 of 7 (permalink) Old 09-02-2008, 11:05 PM Thread Starter
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Thanks everyone.

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post #6 of 7 (permalink) Old 09-03-2008, 09:08 AM
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Looks like a part off a Toyota.

Are you sure you are working on the correct car.



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post #7 of 7 (permalink) Old 09-03-2008, 09:19 AM Thread Starter
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Pasadena blvd and southmore. Give me a call and I will try to meet you.
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