Sounds like the car is out of tune or missing and brakes not working right?
2008 VOLVO C70
125,000 MILES • 2.5L • 5 CYL • 2WD • AUTOMATIC
JIM5763
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1 POST
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Bought new hoses and booster. after installation running worse, could it be the wrong booster? Or I installed the hoses on incorrectly?
Sep 7, 2022 at 4:22 AM
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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STRAILER
AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS
Please remove the check valve from the booster (engine off) you should hear vacuum escape. If not, the booster is bad and allows a vacuum leak. Let me know what you find.
Sep 7, 2022 at 9:56 AM
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STRAILER
AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS
Also, it could be you have a clogged exhaust system, here is a guide to help check it out: