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DTC - p0449 & p0440 HELP !!!!
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Question
jarhead_jr
ok, forgive me if i include too much info here but i need help. 5.3 with 170,000 miles and it still runs strong. i get hard starts when my dtc light is on, p0440 and p0449, when i reset it is starts fine. then the light comes on after a while, (CAN'T FIGURE OUT THE PATTERN TO IT)and it acts up again. i read a page from you guys from april of '05 with a guy , same engine, same prob. you said it wont be the purg valve or the canister, maybe the vent valve or the sensor in the tank. i replaced the fuel pump(new not used), and it of coarse came with all the new components attached. same problem. so i called the dealership for a new vent solenoid, but it comes as a package deal with the new pump that i no longer need. so i went to every junk yard in orlando that had a silverado, and no one wants to get rid of it, once again , with out the pump. on a side note, you'll notice i have a crap load of miles, i drve alot on the highway, so when i fill up, I FILL UP! i'm the guy at the pump squeezing away for every drop, fit 26.8 gals once, they say its a 22 gal tank??? explaine that if you can also.... any way so the possiblity some gas got in the system/canister definatly is there. the truck didnt do this before i went over seas, but it sat for 18 months and here i am. i will try to get the volt reading in the next few days off the pink wire that runs to the vent, IF YOU CAN HELP PLEASE DO SO>>> NO ONE REALLY UNDERSTANDS THIS SYSTEM FOR SOME REASON. MUST BE UNCOMMON. THANKS , JR.
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