i have a 1999 contour w/4cyl. the vacum hose was broken off where dose it hookup on the engine need diegram,
From the booster, to a vacuum source on the engine.
It could be a leaking vacuum hose to the power brake booster or the membrane in the booster could have a hole. When the brakes are applied, the booster is opened to the engine vacuum via the hose. The vacuum leak would then increase, causing the engine to stall.
To vacuum test a brake booster, first ensure the engine is off and the brake pedal is fully depressed to release any residual pressure. Next, disconnect the vacuum hose from the brake booster and attach a hand-held vacuum pump to the booster’s vacuum port. Apply vacuum using the pump; the gauge should hold steady pressure if the booster is functioning properly. If the vacuum drops significantly, it indicates a leak or failure in the brake booster.
Located on the head of the engine, at the end of the intake or exhaust cam.
The vacuum hose on the brake booster typically connects to the intake manifold of the engine. This connection allows the brake booster to utilize engine vacuum to assist in applying the brakes, making it easier to press the brake pedal. In some vehicles, the hose may also connect to a dedicated vacuum source or a vacuum pump, especially if the engine does not produce sufficient vacuum at idle. Ensure the hose is securely attached and free of leaks for optimal brake performance.
That would be the power brake vacuum operated booster.
my 67 was on top
no.
A bad brake booster will cause a vacuum leak, result in poor braking, and even poor engine performance. The brake booster has a large diaphragm which can fail and leak.
On modern vehicles the brake system is enhanced by a vacuum operated "booster". This makes the brake pedal softer and more responsive. When the engine is turned off the engine no longer produces vacuum to supply the booster so the pedal gets hard.
You can identify a vacuum leak in your brake booster by listening for a hissing sound around the booster area while the engine is running. A hard brake pedal that requires more effort to press can also indicate a leak, as the booster isn't providing the necessary assistance. Additionally, checking for a drop in engine RPMs when the brake pedal is pressed can signal a vacuum leak. If you suspect a leak, visually inspect the vacuum lines and connections for any signs of damage or disconnection.
sounds like a vacuum leak in booster