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Old 02-21-2010, 09:26 PM   #1
03 Dodge Ram 1500
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Trouble shoot a engine code

I have a 2003 Dodge Ram 1500 4.7
The code is PO440

I have been told it the gas cap. I just want make sure that is the problem. I already fix the canister tank one of the hose was cracked.

Please help!!! Just want to know if I'm doing the right thing.....



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Old 02-22-2010, 12:25 AM   #2
hundahunta
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Re: Trouble shoot a engine code

evap purge system performance......there can be many problems.....bad purge, open wire in the ldp switch, no vacuum at the ldp, etcccc....but I have replaced many of leak detection pumps to fix this problem...faulty switch inside of the pump...
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Old 02-22-2010, 09:11 PM   #3
Chris Stewart
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Re: Trouble shoot a engine code

__________________
1992 Bravada, 201K, stock
1997 Bravada, 101K, stock...was "called away"

"Cornbread Red", 2001 Dodge 2500,4X4,HO Cummins Diesel,QC,SWB,6spd.,Banks boost&pyro,US Gage fuel press.,Edge Drag Comp,4"exh.,cowl hood, bhaf, black Holley pump, 140gph...13psi WOT, Vulcan Big Line, kevlar/ceramic single disc clutch, cheapo fuel cooler, 8x.010" vco injector nozzles, Cat turbo 62-65-.70A/R, 497hp 1089 tq 8/25/14

Time to turn so's you don't burn.
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