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Rcranium
Dodge Dakota
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7/27/2003
11:03:04
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 Subject: Evap purge flow monitor fault
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Need some help here. Got an 03 CC 4.7L with 2700 miles on it. I've had the same check engine light on for the same code, P0441, 3 times in the last two months. The dealership service dept says that the gas cap isn't tight enough. The second time it was in, the service writer said he got "two more clicks" on the gas cap. They just reset the computer and send me on my way. Now, I've been driving for 20 years now and have driven numerious types of automobiles. My point is, I thought I knew how to properly put on a gas cap. The owners manual says "Tighten the gas cap until you hear a 'clicking' sound. This is an indication that the gas cap is properly tightened". Okay, my question is, do I believe the dealership that I am a dumba$$ and don't know how to put on a gas cap or do I keep taking it in and make them look harder to fix the problem?
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BlkDakDave
GenIII
 
7/27/2003
13:08:46
|  RE: Evap purge flow monitor fault
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Take off the gas cap and check for any debris that could be causing a bad seal. If the cap and seal look OK take your truck to the dealer and have them do a smoke test.
NEVER FORGET!
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Rcranium
Dodge Dakota
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7/29/2003
13:23:09
| RE: Evap purge flow monitor fault
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Message:
Thanks for the info. It went back to the dealer this morning and I insisted that there is a problem and it's not because I don't know how to tighten a gas cap. I asked for diagnostic testing including a smoke test. Well, they just called me back and said that it's a bad evaporator purge solenoid. Of course, it has to be ordered and may take "a couple of weeks".
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Mohmd. Yamin
Dodge Dakota
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9/04/2003
10:35:23
| RE: Evap purge flow monitor fault
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Rcranium:
Did replacing the solenoid fix the problem? I am also getting P0441 on the Durango.
thx,
M.
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snowman
GenIII
9/04/2003
11:12:06
|  RE: Evap purge flow monitor fault
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Message:
that goes for me too
Formerly Cadetdak
"This war will end at a time and place of our choosing"
president Bush
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M.Yamin
Dodge Dakota
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9/04/2003
11:20:40
| RE: Evap purge flow monitor fault
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Hi -
Is there a way we can email Rcranium directly just in case he doesn't get to read this post? I am planning to get the part today for $30 bucks at dealer.
M. Y.
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FL 4WD
Dodge Dakota
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9/04/2003
12:40:56
| RE: Evap purge flow monitor fault
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Message:
My guess--- it has hoses crimped where they pass between trans and firewall. Or a NVLD switch.
Sounds like you are getting blown off. Gas caps are not that hard to install correctly.
Your dealer is flirting with a lemon law case if they can't get their s**t together.
There is a system test on the DRBIII that can be done before the vehicle leaves the shop to verify the repair. This should have been done.
Remind the service dept. that have your DC survey at home and have not been overly impressed with their ability to get it fixed first visit (FFV)
(your first warranty claims will trigger a survey from DC --- if you smoke 'em for not fixing it, they will hear about it)
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Rcranium
Dodge Dakota
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9/04/2003
16:47:44
| RE: Evap purge flow monitor fault
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Message:
Nope, they replaced the soleniod and 2 days later the light came back on....P0441. I took it back and they replaced the gas cap. They said there was corrosion around the gas recepticle. Well, two days later the light is back on, same code. I took it back again and they have ordered a NVLD switch. I'm waiting for it to come in as it is on a national backorder. I have contacted a lawyer about a Lemon Law claim and they have said that I have a case. I'm going to wait and see if this switch fixes the problem because I really do like the truck. I'll keep you updated!
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M. Yamin
Dodge Dakota
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9/04/2003
17:08:26
| RE: Evap purge flow monitor fault
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Message:
Thanks for the info. What is a NVLD switch anyway?
M.
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Rcranium
Dodge Dakota
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9/04/2003
19:30:23
| RE: Evap purge flow monitor fault
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No idea what a NVLD switch is. Maybe FL 4WD can enlighten us?? He hit the nail on the head in diagnosing it!!
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FL 4WD
Dodge Dakota
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9/04/2003
22:12:05
| RE: Evap purge flow monitor fault
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Message:
NVLD = natural vacuum leak detection
The previous evaporative emission system used a pump to pressurize the tank, charcoal canister, etc. The pump would bring the system to a low pressure then stop and wait..... if the pressure held, test passed- no light.
The NVLD system does not use a pump. The day/night temperature cycle creates enough pressure difference to trip the switch and begin waiting for a leak.
The NVLD switch itself is ,in a nutshell, a diaphragm with a switch, set to open and close at specific pressure. There is also a provision to vent pressure or fill a vacuum if something goes haywire.
This is a quick gloss over of the basics from memory and after a couple o' beers. So if someone wants to add something, feel free to...
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M. Yamin
Dodge Dakota
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9/05/2003
09:02:21
| RE: Evap purge flow monitor fault
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Message:
Thanks everyone for your detailed info. I purchased the solenoid today and will replace it over the weekend and have my fingers crossed that this will solve the problem. I'll keep you posted.
I spoke to a mechanic at the dealership yesterday, and he that said code P0441 has nothing to do with the gas cap. P0442 may be but not P0441. P0441 could have a number of reasons that only comprehensive testing will show. He said that on the higher mileage cars, purge selonoid could be the malfunctioning part.
Best regards,
M.
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Rcranium
Dodge Dakota
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9/17/2003
12:30:56
| RE: Evap purge flow monitor fault
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Message:
M. Yamin, did the solenoid fix your problem? I got mine back yesterday from the dealer after they put in a new NVLD switch. I hope this is the end of it. My next step is Lemon Law.
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RaZoR1
Dodge Dakota
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9/18/2003
13:29:31
| RE: Evap purge flow monitor fault
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I have had this problem as well. They put on a new gas cap and have not had a problem since. I'm hoping I'm one of the lucky ones cuz my warrantee has run out. It's nice to know that if i have this problem again taht I'll know what to look for. That FL 4WD guy knows his sh*t!!! Imagine how smart he must be without the couple O' beers................. or maybe that's why he so smart... hahahah.....
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Rcranium
Dodge Dakota
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11/01/2003
21:25:51
| RE: Evap purge flow monitor fault
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Well, it's been a few months and no more MIL lights. Today I had the tires rotated and a lug nut wouldn't come off. It had to have been cross threaded at the factory since this is the first rotation. The lug nut and the stud was stripped. I will contact the dealer Monday to see if they will fix this under warranty. I think it should be covered since they screwed it up. I guess I'll bring up the rough idle also even though there seems to be no fix (4.7L). I got 2.5 more years with this thing then I'll sell it to some sucker. There will be NO more Chrysler products in my future.
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medsoldja
Dodge Dakota
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1/19/2004
15:31:52
| RE: Evap purge flow monitor fault
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Last summer the catalytic converter clogged on my 1999 4WD Dakota V6. It was under warranty so it took it to the dealer and when I got it back the climate control did not work and the check engine light came on. I argued with the dealership complaining they either messed something up or the excess heat from the clogged Cat caused the problems. They insisted it did not and were going to charge me $300 to fix the climate control vacuum hose because they were going to take the whole dash apart. Then they quoted me $120 for the "purge solenoid". I declined the vacuum work and found the problem myself in 10 minutes and fixed it with a $.15 length of tube(saving $299.85). The burnt vacuum tube was next to the purge solenoid. They tried charging me $250 for "envorinmental fees" when they replaced the solenoid but the light is still on. I am pretty sure there is another vacuum tube that is damaged and I have not had the time to replace it.
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MoparManiak
Dodge Dakota
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11/17/2007
18:09:03
| RE: Evap purge flow monitor fault
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Message:
Hey first off let me start off by saying I'm driving a 97 Ram 1500, so one would think that i'm in the wrong place. I've had the same DTC pop up on my truck now multiple times and have had it stay away for months at a time. In my case i think something that may be contributing to the problem is the extremely rusted filler hose to the gas tank. I'm originally from Ohio, and the weather up there is not gental with vehicles.
I found this tread very informative in regards to this issue and wanted to let you guys know it's a good thread, thanx. Hope my other senerio may help someone down the road, but i've got some searchin around to do under the truck to pin point my problem.
Hey if you guys are ever looking for another forum, i'm a member of DodgeTruckWorld.com, and thought you fellas may be able to find some helpful knowledge there as well.
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Burt
Dodge Dakota
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4/03/2008
14:38:15
| RE: Evap purge flow monitor fault
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Message:
MoparManiak
I also came up with the same fault code on my 97 dodge ram and traced the hoses back to the charcoal canister and that seem to be the problem. Well I hope
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doc1
Dodge Dakota
JOIN HERE
9/28/2008
18:22:14
| RE: Evap purge flow monitor fault
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Message:
just for info someone may be able to verify
better
When you get a PO441 it is not the gas cap that code is I believe a PO456
When you get a PO441 it is for these items
• Bad vacuum switch
• Broken or damaged EVAP line or canister
• Open in PCM purge command circuit
• Open or short in Voltage feed circuit to Purge Solenoid
• Faulty purge solenoid
• Restriction in EVAP solenoid, line or canister
• Corrosion or resistance in purge connector
• Bad PCM
has nothing to do with gas cap hope this helps
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doc1
Dodge Dakota
JOIN HERE
9/28/2008
18:52:40
| RE: Evap purge flow monitor fault
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Message:
follow up
I do not think that the NLVD switch is proplem as that should throw a PO452 CODE
When you get an error code ,take the code and go look at an OBDII chart if it is a 96 up to around 2007, nefore 96 on most cars and trucks it was OBDI after 2007 or there abouts it became what is called the CAN system nso look it up
This way you have some info before having it checked, keep in mind that some codes are generic in nature but most codes are the same regardless of type of car being checked, and are pretty specific
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Durango owner
Dodge Dakota
JOIN HERE
9/05/2009
08:04:46
| RE: Evap purge flow monitor fault
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Message:
I have a 03 Durango and 54tml on the clock. I got this code every now and then, sometimes it took a year before it came back. The other day I got it again so I started to investigate. It's definitely not a leak (like gas cap), if so the code would say LEAK. If your stealerships talks about gas cap u better to run, they suck.
Monitor problem simply means that the computer cannot see whether the system is working OK or not.
I checked my purge solenoid with engine running, I connected a MityVac in the hose that goes to Throttle body. It was holding the vacuum nicely and every now then the PCM commanded it open (purge) and the vac dropped, solenoid worked fine.
Then I removed the NVLD switch. I removed the top of the switch to get to the electricals inside of it. It looks very simple nad I noticed 1 connector was corroded and there was no continuity with ohm meter. I cleaned the connector, put it back together and while sucking from the hose with my mouth I watched the ohm meter. Now it worked.
I didn't reset the computer, I let it clear on its own and watch how long it takes, probably a week or two (I don't drive much).
Cheers.
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