P0440/p0456?
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P0440/p0456?
I hope someone might be able to assist me into to looking for possible faulty parts/hosing causing an evap error to appear on my 5.7 Hemi 2003.
so far the dodge dealership had changed several parts with no success.
Purge solenoid
NVLD pump
vacuum hose
vapor canister
couple of other hoses
throttle cable
any ideas guys? - please
also had P0442 code.
so far the dodge dealership had changed several parts with no success.
Purge solenoid
NVLD pump
vacuum hose
vapor canister
couple of other hoses
throttle cable
any ideas guys? - please
also had P0442 code.
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sorry just to add, MPG is down to a new low of 11.4 on the overhead console.
Someone has suggested EGR valve, but don't think my truck has one?
dealership have suggested charcoal canisters this week????
Someone has suggested EGR valve, but don't think my truck has one?
dealership have suggested charcoal canisters this week????
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Thanks for the reply jk, that hose been replaced, as have the pump and filters which are under the rear passenger driver side door.
Not changed the gas cap yet. I will order one, but I don't think thst is the issue. Also have pressure build up in the petrol tank issue as well. The gas cap can be hard to take off sometimes, as air hisses out. If gas cap was cracked then I guess pressure wouldn't be able to build up in the fuel tank!?!?
Not changed the gas cap yet. I will order one, but I don't think thst is the issue. Also have pressure build up in the petrol tank issue as well. The gas cap can be hard to take off sometimes, as air hisses out. If gas cap was cracked then I guess pressure wouldn't be able to build up in the fuel tank!?!?
Record Breaker
Joined: Nov 2008
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From: Pierce County, Wa
you can check this page out for codes help.
Also, use the search fucntion above and type in "p0456" and there are a couple of threads about it. Here's one that I'll quote for you that worked on this dakota,
Hopefully you'll find a fix! I can't believe the dealership is yankin you around like that. I guess you got some new hoses out of it.
Also, use the search fucntion above and type in "p0456" and there are a couple of threads about it. Here's one that I'll quote for you that worked on this dakota,
Ok so I got the Small Evap Leak, removed/replaced my gas cap and reset the light with an OBD2 tool. It came back promptly. Did it again after filling up again, it came back again. The third time I used the stylus from my palm pilot and I poked and worked around the little check valve in the gas cap. It seemed to have been a little off kilter and by pushing it in/out several times it sort of reset itself. Two days later and the CEL hasn't come back on.
Anybody getting the small evap leak that won't go away want to give that a shot and see if you have any luck, instead of just buying a new gas cap?
Anybody getting the small evap leak that won't go away want to give that a shot and see if you have any luck, instead of just buying a new gas cap?
Hopefully you'll find a fix! I can't believe the dealership is yankin you around like that. I guess you got some new hoses out of it.
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Thanks Joe, I will take a look tomorrow.
to be fair to the dealership. I'm in the UK and we don't have many Rams, and we don't have EVAP systems on our motors over here, so think it has been guess work so far.
I found the hose cracked, and they replaced that, but that must coming up for 2 years ago now, that CEL is driving me crazy now.
to be fair to the dealership. I'm in the UK and we don't have many Rams, and we don't have EVAP systems on our motors over here, so think it has been guess work so far.
I found the hose cracked, and they replaced that, but that must coming up for 2 years ago now, that CEL is driving me crazy now.
Champion
Joined: Nov 2005
Posts: 2,875
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From: North Eastern England
Yep.....try the gas cap.
It usually is that when it's a code for a "small" evap leak.
There's usually a few on e-bay over here in the UK and they're in stock and posted from the UK.
Hope this helps?
Al.
It usually is that when it's a code for a "small" evap leak.
There's usually a few on e-bay over here in the UK and they're in stock and posted from the UK.
Hope this helps?
Al.
Last edited by abarmby; Feb 12, 2010 at 03:35 AM.