When I drive the car the brake close up stopping the car. They say the booster is bad

2004 JAGUAR X-TYPE
71,000 MILES
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KLW23608
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  • 1 POST
Im having brakes problems. I put new calipers,brake master cylinder, brake hose, booster vacuum hose. Then i bleed the brakes. But now my brake pedal is hard to push down. Usually when i started my car the brake pedal goes to the floor. But now it will not go down. When i drive the car the brake close up stopping the car. they say the booster is bad. Help please.
Dec 19, 2012 at 9:10 PM
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KASEKENNY
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This does sound like a booster issue so below are the complete instructions from the manual.

Also, here is a guide on bleeding the brakes as that appears to be needed after this replacement as well:

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Please run through this process below and let us know if you have other questions. Thanks
May 20, 2021 at 7:07 PM