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Avery Thomas
Dodge Dakota
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4/19/2006
10:18:13
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 Subject: P0455-Where to start?
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Message:
Ihaven`t my truck long. It`s a `00 4.7 Dakota w/ 75k miles on it. The CEL came on on day 2. Truck drove/drives fine. Mileage sux tho, `bout 15-17. Well I noticed the gas cap wouldn`t close all the way so I got a new one. Reset the CEL. Now 3 days later, CEL again. Checked the code this time, P0455, Evaporative Emission Control System Leak Detected (gross leak/no flow). Where do I begin? Would someone please point me in the right direction? I ain`t too computer savvy but I can work on the mechanical stuff. If it`s a sensor tell me where to look to swap out. Thanks for any and all help.
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Webtiger
GenIII
4/19/2006
13:57:17
|  RE: P0455-Where to start?
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Message:
Last 2 times I had that code appear it was a bad gas cap in both cases.
Are you certain the new cap is actually sealing? I think the second gas cap I replaced I had to reset twice before the code went away.
HTH,
Webtiger
Ken Grierson
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modain
GenIII
4/19/2006
21:48:18
|  RE: P0455-Where to start?
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Message:
Check all the hoses in the evaporative system - under the hood (there's a diagram), under the driver door inboard of the frame rail.
What's your left foot doing?
=========================================
2002 Graphite QC SLT Plus, 4.7L, NV3500, Superchips 3715, 3.92 LSD, loads o'fun...
2001 Patriot Blue Durango SLT, 4.7L, 45RFE, Superchips 3715, 3.55 Open (for now)
1999 Forest Green Dakota RC Sport, 2.5L, NV1500, 3.55 Open
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Spacinjason
Dodge Dakota
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4/21/2006
10:09:46
| RE: P0455-Where to start?
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Message:
I had the exact same code in my '01 QC 4x4 4.7L. I replaced the gas cap and located the charcoal canister under the truck. It's located just rear of the drivers seat. I pulled both hoses off (one slid off real easy, maybe it was leaking?)and cut about an inch off each one and put them back on. Then I reset my computer and had no more codes. Maybe this will work for you. Good luck!
Spacinjason
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Avery Thomas
Dodge Dakota
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4/22/2006
03:23:44
| RE: P0455-Where to start?
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Message:
Thanks guys. I`ll check the vac can in the morning.
On a different note. Exactly how big a difference is there between the stock air filter box and a cold air intake? I`m putting one of those cold air jobs on in the morning and was a little curious of what to expect. Gas mileage is around 17.4 for an all around average. Will I see a noticeable difference there? I`m sure power will be effected but how noticeable is it?
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Spacinjason
Dodge Dakota
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4/22/2006
06:45:18
|  RE: P0455-Where to start?
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Message:
I would reccommend getting that code taken care of before installing the CAI. Just my .02 cents.
Spacinjason
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Avery Thomas
Dodge Dakota
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4/22/2006
16:15:53
| RE: P0455-Where to start?
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Message:
Well, I disconnected the battree cable and went on ahead and installed the CAI. I followed most of the lines in the diagram under the hood. I checked the canister and the bigger of the 3 hoses did have a loose fit. So I cut a lil off and reinstalled. I put the battree cable back on and put about 60-80 miles, both hiway & city, on it. So far so good.
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Spacinjason
Dodge Dakota
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4/23/2006
08:44:47
| RE: P0455-Where to start?
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Message:
Well, hopefully you fixed the problem and your check engine light will not come back on. I forgot to mention that I ended up putting hose clamps on the two larger hoses connecting to the evap canister. Glad you were able to get your CAI installed.
Spacinjason
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Avery Thomas
Dodge Dakota
JOIN HERE
4/23/2006
14:39:55
| RE: P0455-Where to start?
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Message:
To all who chimed in, many thanks. Almost 200 miles and no CEL! Fangers are still crost tho.
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