It acts as a reservoir to maintain a vacuum supply to the HVAC (heating, ventilation, air conditioning) system while the vehicle is under acceleration.
Main function of canister is to supply a constant source of vacuum for the power brake booster. The canister should store enough vacuum to allow the brake pedal to have power assist for 2 brake applications in case the vehicle engine stalls
The vacuum canister on Cherokees of this vintage is located immediately behind the front bumper on the passenger side. You WILL have to remove the bumper to access this part. As far as the brakes are concerned, you may have loss of power brakes, but the brakes will function perfectly fine as manual brakes. Also, it may cause your heat/air conditioning to be stuck in the defrost mode.
You will find the evap purge valve on the passenger side firewall between the A/C drier and the heater hoses. There are small vacuum lines and some wires attached to it. The canister is inside the left rear fender, behind the tire.
look under dash. see if a cable or a vaccum hose has popped off. hope this helps Actually, there are two vacuum lines to check. On is under the dash on the left (driver's side) of the transmission hump connected to an actuator. The other place is a hard plastic vacuum line that runs from the dash control, through the firewall into the engine bay. It's near the washer reservoir and continues along the passenger side fender to a vacuum canister behind the bumper near the corner (passenger side). Sometimes that hard plastic tube develops cracks. It's not hard to replace.
Take a vacuum hose off at the intake manifold and put a vacuum gauge on the port, then read the vacuum with the engine running.
electronic vacuum gauge
There is no vacuum canister on this vehicle.
"The benefits of purchasing a Miele canister vacuum versus a Miele upright is that the canister vacuum, for one, is quieter than an upright. Also, the canister vacuum comes with attachments that allow you to get into tighter place than the upright. If you have stairs, it's easier to maneuver the canister vacuum, and it's also smaller than the upright. It's also easier to clean car interiors with a canister versus and upright. And the tools and attachments that come with a canister are stored inside the canister. However, with an upright vacuum you don't have to constantly move it around. Uprights also have more suction power than a canister vacuum."
When the vehicle is under acceleration it doesn't supply vacuum. The vacuum canister or reservoir holds a vacuum supply to operate vacuum operated accessories until the engine regains vacuum.
An upright vacuum usually cleans carpets better, but a canister vacuum is better with liquids or heavy debris.
Bag vacuum cleaners require a bag and this is what catches the dirt that you vacuum up, when the bag gets full, you simply throw it away and replace it. Canister vacuums suck up the dirt into the canister attached to the vacuum. You then detach the canister and dump the dirt out of the canister.
The Miele S7260 is regarded by most professionals to be the best canister vacuum for pet hair.
"There are different models of the canister vacuum that Overstock offers, and the prices of each model varies. The average price for a canister vacuum from Overstock is between $45 and $500, although the often run good sales where you can get a $500 vacuum for under $300."
The only kind of vacuum canister that a Dyson vacuum machine will take is one that is made by Dyson. These canisters are made especially for Dyson, and to date there are no competitors in the market.
Some canister vacuums are suction vacuums. These canister vacuums do not need electricity.
A Miele canister vacuum will last 30 years if you follow the proper maintenance procedures. If you change the filters and vacuum bags, then they work great.
Amazon sells the Miele Olympus Canister Vacuum for two hundred ninety-nine dollars and free shipping. Amazon sells the Miele Titan Canister Vacuum for five hundred ninety-nine dollars.
The average price of a Hoover Multi-Cyclonic Canister Vacuum is $130. This vacuum is available directly from the Hoover website and from Amazon and Sears.