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99 blazer evap emissions code

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  #1  
Old 08-22-2010, 03:26 PM
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Red face 99 blazer evap emissions code

hey guys new on here just wondering if anyone on here has had this prob and can help
 
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Old 08-22-2010, 06:12 PM
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hmmm...what code? Number PO 440, PO 442, PO 446? JP
 
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Old 08-23-2010, 01:16 PM
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Depends which one. There are several evap codes.

I had a small leak code that went a away with a junkyard evap canister+bracket. My fuel fill line is also rusted through where it touches the frame, but the gorilla tape I put on there seems to hold vacuum for the evap system.
 
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Old 08-23-2010, 07:22 PM
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Mine went away with a new gas cap.

I can't remember which code was, but I noticed that it usually happened after I put gas. When the SES light was on, I removed and put the cap on as tight as I could and the light turned off after a couple.

With this in mind I bought a gas cap on autozone and never got the code or SES light again.
 
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Old 08-23-2010, 11:44 PM
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thanks guys gonna look into it more let you know wat happens
 
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Old 08-29-2010, 11:25 AM
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My P0440 went away with a new fuel filter
it almost drove me crazy.
fuel cap didn't fix it
hsc the evap smoked
found nothing
just the fuel filter
 
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