Car: 1999 chevy venture 3.4L engine
Can someone please tell me where this vacuum line goes? I was in a
rush to replace the battery with a new one and somehow this vacuum
line shaken torn lose from where it was suppose to be hooked up to. It
appears to be sucking air when I place a finger on it. The car still
runs ok without it hooked up to where it is suppose to, though the
engine light is on.
This line runs to somewhere undernaeth the windshield washer reservoir
next to the battery.
That could be it. The battery in this car is located on the right
hand side right next to the fender. I might have dislocated this
vacuum connector in a rush to get the new battery in. I guess I will
have to yank the battery out again.
It's a storage tank basically. Holds vacuum for heater and engine
controls and acts as a buffer for those times the engine changes rapidly
and drops the vacuum level. On many vehicles the lack of the canister
shows up in the HVAC system first.
Also often referred to as 'Vacuum Reservoirs', and together with a check
valve, insure a more/less constant vacuum source to some sensitive
Intake manifold vacuum dramatically bounces up and down as the throttle
is open and closed in normal operation... and will rise to atmospheric
pressure for periods when the throttle is wide open. Old timers will
recall the early 'vacuum motor' powered windshield wipers
slowing/stopping while accelerating or climbing hills.
Those big donut shaped brake boosters most all cars now use, have a
secondary function to act as such a reservoir dedicated to the brake
system... allowing a limited number of power assisted brake applications
should it's vacuum source be lost. (Pumping the brakes in such a
situation will quickly deplete stored vacuum, greatly increasing the
drivers required petal force to slow/stop the vehicle. You can get a
good idea of what yours will feel like by (parked in a safe place with
the parking brake on) pumping the brakes without the engine running.
They'll feel absolutely sickening after maybe 3 to six pumps...
restarting the engine will return things to normal.)
Many vehicles employ reservoirs, most are now plastic, but metal 'food
can' looking ones can be found... they're frequently tucked out of the
way in misc body cavities.
Get that line reconnected before running the engine anymore. You have a
rather serious vacuum leak as is, that could lead to burned a valve/s if
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