Pitbull2o08

iTrader: (2)

So the last week I've been getting P0446. I have been able to clear it only for it to come back 2 days later, every time. Today I removed the canister and blew into it, only to meet 100% resistance, and was unable to blow through it, meaning the canister is still good, right? Unless it is stuck closed? Anyway, I reinstalled it and ordered the part anyhow. I tried to clear the code again only to see two codes this time! And I was unable to clear P0446 this time! Car is idling a little high, around 900-1000 mark but slowly comes down. I have pictures of my log I will attach, but any help is appreciated.

Pitbull2o08

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Pitbull2o08

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Pitbull2o08

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Pitbull2o08

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Pitbull2o08

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Pitbull2o08

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Pitbull2o08

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Little help?

Mr.Tozzi

iTrader: (3)

evap purge solenoid maybe?

Pitbull2o08

iTrader: (2)

Im replacing that. But when I blew through it, it was fine.

tomj77

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Doesn't matter if u can't blow through, it may just not be opening.

tomj77

iTrader: (2)

Ok that is a tank pressure code. Not enough pressure so u have a leak somewhere. Fist check ur gas cap to make sure it's on properly. If that don't work, try replacing the tank pressure sensor on the canister , black thing under ur car back behind ur gas tank. If u changed the solenoid on the intake, thAt probably isn't ur issue.

Pitbull2o08

iTrader: (2)

I'm currently waiting on that intake solenoid to get on tomorrow. I think I'll just replace that and the gas cap for good insurance. Then look into the switch under the tank. Do have a picture?

Pitbull2o08

iTrader: (2)

Should I return that intake evap purge solenoid?

Pitbull2o08

iTrader: (2)

Replaced evap purge solenoid on manifold, and code P0446 came back 4 days later. Any ideas?? Please help....

tomj77

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try replacing the gas tank pressure sensor. and the evap vent solenoid, both are located on the evap canister behind the gas tank.

nathan112i

^this i ended up replacing both the purge solenoid and evap vent solenoid before my codes went away for good.

Pitbull2o08

iTrader: (2)

Do you have a pic of those two components?

tomj77

iTrader: (2)

I have a vent solinoid at home and possibly my old tank pressure sensor. U can look me up at rock auto.

tomj77

iTrader: (2)

Goto rockauto.com and look for this stuff

AIRTEX / WELLS Part # 2M1084 More Info {#15788844, 15795021, 17114055, 21993142, 22865590, 25321964, 25932573} - evap vent solinoid
May Require 1P1793 Jumper Harness Connector for Installation because of OEM Redesigned Vent Solenoid

I will need the connector to cause the solinoid has different plug than original, they all come like that now .

ACDELCO Part # 13502903 - fuel tank pressure sensor

Pitbull2o08

iTrader: (2)

Sweet, I'll check it out when I get home.

Pitbull2o08

iTrader: (2)

It's up here?

tomj77

iTrader: (2)

yes that's the evap canister. the vent solenoid is the one with the red plug and the tank pressure sensor is the white plug

Pitbull2o08

iTrader: (2)

Sweet! That looks easy enough. I hope that fixes my code for good. So I really need that extension cord thing?

tomj77

iTrader: (2)

Yes , the solinoid has different plug now that they updated it