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What are EVAP canisters?

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Old Nov 28, 2005 | 04:09 PM
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Default RE: What are EVAP canisters?

item 10 is the purge solenoid
 
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Old Nov 28, 2005 | 04:36 PM
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Default RE: What are EVAP canisters?

What should I do? Unplug the selenoid first? and reset the pcm?
 
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Old Nov 28, 2005 | 04:46 PM
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Default RE: What are EVAP canisters?

i'd pull the vacuum lines off and put a vacuum pump on it. make sure it holds vacuum, then ground 1 side of the solenoid and put 12 volts on the other. if it's working properly, you should loose the vacuum when the solenoid opens. if it doesnt act that way, then I have the operation of it reversed. either way, it should hold a vacuum in one of the states... activated or de-activated.

I also found this statement in the book with respect to the leak detection pump...
"the vapor/vacuum lines and hoses must be firmly connected. check the vapor vacuum lines at the ldp, ldp filter and evap canister purge solenoid for damage or leaks. if a leak is present, a diagnostic trouble code may be set"
 
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Old Nov 28, 2005 | 04:50 PM
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Default RE: What are EVAP canisters?

also found a pic of the evap canisters... they are mounted on the frame rail where I mentioned...

oh yeah, one other thing... have you changed your gas cap?
 
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Old Nov 28, 2005 | 09:21 PM
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Default RE: What are EVAP canisters?

I had a similar problem with the leakage detection pump when I put on a CAI and throttle body. What is the code that you are getting? Mine turned out to be a loose hose. Once I tightened down the hose and reset the computer the code never came back.
 
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Old Nov 29, 2005 | 01:43 AM
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Default RE: What are EVAP canisters?


ORIGINAL: Off_Road_Teacher

I had a similar problem with the leakage detection pump when I put on a CAI and throttle body. What is the code that you are getting? Mine turned out to be a loose hose. Once I tightened down the hose and reset the computer the code never came back.
which hose?
 
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Old Nov 29, 2005 | 04:02 AM
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Default RE: What are EVAP canisters?

Thanks for all the help. I'm gonna see if the light comes back on after this pcm reset I did about a week ago. If it does I guess that I'm going to unhook the canisters and tighten them down and reset the pcm. Thanks for the help. -Tyler
 
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Old Nov 29, 2005 | 10:02 AM
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Default RE: What are EVAP canisters?

My problem was with the hose running from the purge solenoid for the canisters on the leakage detection pump to the front of the throttle body. Once I got that hose tightened properly, the code was gone.
 
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Old Nov 29, 2005 | 12:10 PM
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Default RE: What are EVAP canisters?

it may sound dumb, but i had the same code come up on me. it turned out to be the gas cap wasn't on tight enough. that caused a air leak that made the computer think it was a vac leak.
 
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Old Nov 29, 2005 | 12:17 PM
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Default RE: What are EVAP canisters?

also someone told me that the one on your frame is what catches over filled gas. the ones by your cai need to be higher than your gas tank because they can get gas in them and mess up, causing a code to show. so if they smell like gas that may be your prob.
 
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