What is the funny round ball vacuum chamber under my hood? What does it do?
Why did it collapse? Can I drive without it if I plug the vacuum line?

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What you describe sounds like a vacuum "reservoir", used to store up vacuum
for things like cruise controls, heater and A/C controls, brakes, etc. You
may be able to operate without it or with it bypassed, but you may notice
some hesitation with certain systems, your heater may shift around while
stopped at lights, etc. It would probably be a good idea to get a similarly
sized replacement unit. If you have any salvage yards nearby they shouldn't
be too expensive. If the salvage yard soesn't sound appealing then a decent
parts house should have a suitable substitute.


"GDegen3807" <gdegen3807 (AT) aol (DOT) com> wrote

Thanks Raven, yes that sounds just like what it is, because I see no other
purpose for it other than buffering the amount of vacuum. I guess it just
collapsed because of age, maybe because of heat as well because I noticed
the cool air duct to my air cleaner was off and I imagine the engine was
just taking in the compartment air for a bit. Thought I detected a very
faint smell of fuel and thought that the EGR system may be acting up,
perhaps the cannister needs replaced.

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First time I turned the heat on this morning, may have just did it.

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