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Trouble code P0441 help

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Old 05-03-2011, 07:24 AM
zeke83 zeke83 is offline
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Default Trouble code P0441 help

I got this code for the EVAP leak/noflow condition. I replaced my gas cap and put in a new purge valve, but the check engine light came back on...any ideas??

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Old 05-03-2011, 08:03 AM
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Check the vacuum lines on the canister under the truck and in front of the fuel tank. They come cracked, loose or damaged.
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Old 05-03-2011, 08:17 AM
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OK thanks
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Old 05-03-2011, 08:23 AM
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FAQ section, I have a map of the evap system you can use it to trace the lines. this is almost always a cracked hose or failed hose clamp...
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Old 05-03-2011, 10:29 AM
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Are there any hoses that are prone to fail first. Looks like some of them will be hard to reach without dropping the tank.
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Old 05-03-2011, 11:11 AM
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The place that I've seen they go the most are right at the cannister, either the hose end cracking or the clips themselves failing. The quality of the hoses are pretty poor and IMO the clamps they use EVERYWHERE on these trucks are the cheesiest I've ever seen. I tend to replace a clamp with an inexpensive screw type everytime I am working in an area of the truck that has one of the crappy ones.

Although it could be any hose or any clamp, I'd look there first...
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Old 05-03-2011, 11:38 AM
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Is there special vacuum hose that it needs to be replaced with?
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Old 05-03-2011, 11:48 AM
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If there is, I've never used it. I usually walk into my local auto parts store with a small section of the bad hose and tell them to match it up. They keep bulk hoses in the rear and will cut you a piece at about a buck a foot. Is always a better quality hose than the stock one.

I did a full once-over on my Grand Cherokee for a trip last year and replaced about 3 hose sections that were cracking bad. NONE were coolant hoses, all three were emissions crap related. The GC also uses those **** poor clamps and I replaced some of those also with 50 cent screw type ones. Didn't pop a code, but looking at those hose ends, I knew it wouldn't be long...
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Old 05-03-2011, 12:34 PM
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Thanks for the help. Ill see if I can get her fixed this weekend.
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Old 05-03-2011, 05:05 PM
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For what it's worth, mine broke at the first 90 deg. elbow from the canister. I heard that is a common failure and perhaps a good place to start looking since it is exposed to road debris flying up and damaging it.
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