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Old 10-01-2012, 12:23 AM   #1
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What is this?

I have a 98 sport and I'm sure it's a common piece to most I-6 engines. It's a black box on the driver side fender just aft of the washer reservoir. It's got two vacuum lines connected to it and one open port for another vacuum line. Also if you know what the funky thing attached to it is I'd appreciate that too.
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Old 10-01-2012, 12:31 AM   #2
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Your charcoal canister.

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Old 10-01-2012, 12:32 AM   #3
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Whats its purpose? Is it necessary? What's the open port on the top of the front side?
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Old 10-01-2012, 12:32 AM   #4
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Guessing but it looks like a charcoal canister for fuel fumes from the tank and the fuel system.
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Old 10-01-2012, 12:34 AM   #5
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It sucks the vapors into the engine and stores them when it is not running. Part of the smog system.
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Old 10-01-2012, 01:17 AM   #6
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Thanks gunner and tjspeed. I'm replacing vacuum lines and rubber grommets and I snapped one of the plastic connectors off...
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Old 10-01-2012, 08:17 AM   #7
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I asked the same thing. I'ts a evap cannister and your missing the breather cap like me.
http://www.wranglerforum.com/f5/what...ok-188776.html
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Old 10-01-2012, 08:36 AM   #8
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Oh and the funny looking thing next to it is the EVAP canister purge solenoid.
An on/off valve that lets the fumes from the charcoal canister be returned to the intake to be burned off. PCM regulates it's actions dependent on cold/hot starts and closed/ open loop running conditions.

Just another thing that can go bad and make your Jeep run funny. They do not fail often, actually rarely, but when they do you could pull your hair out trying to figure out what is wrong, without the proper diagnosis tools.
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Old 11-15-2012, 03:21 PM   #9
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Carried by napa? .........................................

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