RepairPal Certified shops can diagnose and repair your 2000 Toyota Echo. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
This sounds like a case where some hands on inspection is needed. When I think of power brakes and how they are related to engine performance, I think of engine vacuum -- which supplies the "power" to the power brake booster. If you have an air leak, it can cause stalling and a loss of engine vacuum. Focus initial attention there.
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