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02-21-2010, 10:26 PM
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#1 | |
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AF Newbie
Join Date: Feb 2010
Location: Houston, Texas
Posts: 1
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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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02-22-2010, 01:25 AM
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#2 | |
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AF Enthusiast
Join Date: Aug 2004
Location: Wahiawa, Hawaii
Posts: 835
Thanks: 0
Thanked 12 Times in 12 Posts
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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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02-22-2010, 10:11 PM
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#3 | |
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AF - Advisor
 
Join Date: Mar 2004
Location: Nashville, Tennessee
Posts: 2,920
Thanks: 113
Thanked 41 Times in 39 Posts
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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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