Some BMW 325i owners report experiencing stalling when applying the brakes, which may be linked to several potential issues. These include vacuum leaks in the power brake booster system, which can lead to stalling when the brake pedal is pressed. Additionally, some users have noted that engine revving during cold starts can create a stall-like situation when braking. A stiff brake pedal accompanied by stalling may indicate a ruptured diaphragm in the brake booster. Furthermore, maintenance-related problems such as faulty hoses, steering bushes, or brake pads can contribute to rough idling and fluctuating engine revs, ultimately resulting in stalling. It is essential for owners to address these concerns promptly, as stalling can significantly impact overall vehicle performance. Seeking professional assistance is advisable to effectively diagnose and resolve these issues.
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