Does the following mean that my vacuum pump is going bad?

When I pump my brake a few times in succession I lose the "power" part of power brakes

engine will not shut off (cant find any missing hoses even though some connections are loose.

There still could be a leak. Proper way to check the vacuum pump is with a vacuum gauge. Doesn't have to be an expensive one. Disconnect and cap off everything but a single line from pump to gauge. Run engine. Vacuum should be at least 20 inches of mercury on the gauge. If so, pump is probably good. Leak could be in brake booster or elsewhere, depending on what kind of car you have (please add to your signature so we know). If vacuum is below 20 inches, pump could be bad. Pump may be rebuildable, again depending on which car you have.

Jeremy

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

that's about what mine was doing when the cam exited the valve cover...

ya best park the car, and figure out if it's a leak or not.

and even if it's JUST a leak, don't run the car, as the pump is NOT designed to continuously pump the system!

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!