Accent LC (2000-05) :: P0442 - Intermittent Gas Fumes From Exhaust
Aug 1, 2013
I recently bought a 2003 Hyundai Accent 1.6L DOHC manual transmission hatchback with 124000 miles. So far the work I have done in the car include replacing front bank 02 sensor, new flex pipe, exhaust manifold replaced with a used OEM part. Everything is going great with the car except that the check engine light is on with the P0442 and I occasionally smell gas or exhaust fumes (not sure) while driving and it goes away. My combined mpg is only about 23mpg.
I replaced the gas cap with a brand new OEM part then cleared the CEL. However, after driving 90 miles, it went back on so I brought it to my mechanic who recommended a smoke test. After the smoke test, he said the charcoal canister and the diagnostic module needs to be replaced. Is it worth replacing to fix the CEL code and if the code is related to me smelling fumes inside the car while driving. Also, I would like to know if there might be another problem causing this code instead of the charcoal canister or the diagnostic module.
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Currently throwing both P0441 and P2096, just prior to this I was also throwing P0442.
Read around on web and decided the simplest thing it could be would be the fuel cap, may as well start there. Owners manual even recommends changing at 90k. Got a replacement from advanced (which is supposed to be built to OEM specs), re-set battery light stayed off, attempted to pass emissions but a few systems were "not ready". Was good for 80ish miles. Light came back on throwing P0441 and P2096. I re-tightened fuel cap and re-set battery, light went off.
Did some maintenance; spark plugs, air filter, oil/filter change and replaced the leaky oil pan. Keep putting on miles hoping to get to the recommended 200 mile mark before stopping by the emissions testing facility, 105 miles after re-set same codes came back. I'm almost positive I replaced a o2 sensor 2ish years ago for emissions. Also there is an obvious exhaust leak which could be a culprit. I seem to remember reading somewhere that a weak battery can cause problems with fuel pressure... not sure if it's true or not but for what it's worth I do know my battery is on it's last leg.
I'd like to avoid unnecessary fixes, it's only my winter car so as long as it's nothing major I'm not going to dump money in it. I'm going to take a guess and say the check engine light is coming on when these systems become ready. Plan is to try this re-set one more time hope for the best and if not replace exhaust or at least repair leak. Not sure on my next step for P0441 though. Vehicle is a 2004 Hyundai accent with 86k on it.
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About two years ago, I noticed the smell of exhaust fumes in the cabin of my 2000 Honda Civic any time the vents were set to pull air from outside the cabin. Switching the vents to recirculate would prevent the fumes. Looking under the hood, I found the exhaust manifold was cracked, so I replaced it along with the catalyic converter (actually one piece in this model) and two O2 sensors. Since the replacement, the problem with exhaust fumes remains. I have asked my mechanic to look at this a couple of times, and he could not find the cause. What to try next to diagnose the problem. We use the car frequently, and just have to leave the vents set on recirculate. This becomes an issue on rainy, humid days when recirculate causes the windows to fog.
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I have a 2000 Ford Focus ZTS with about 135,000 miles on it with a fume problem. Once it's warm, I'm noticing what smells like exhaust fumes in the cabin when stopped or at low speed (not at highway speed.) It runs perfectly otherwise. I took it in a few months ago (before I noticed the correlation with engine temp), and the mechanic could not replicate the problem, and he said there was no exhaust leak, I now suspect this is because he only tested it cold.
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My wife's 2000 Hyundai Accent GL wouldn't start one morning. She tried to get a jump from someone, assuming it was a problem with the battery and apparently, they crossed the cables accidentally and melted the positive terminal of her battery. I replaced the battery about 2 weeks later and the car started up...a little rougher than normal, but it started nonetheless. After 30 seconds or so, the engine started to smoke. It seemed like it was coming from the rear of the engine.
After leaving it off for a few minutes, we restarted it and it was smoking again, this time from the front of the engine. I took a good whiff of the smoke and it's definitely gas fumes/exhaust fumes/I don't know. It seems like a pretty big coincidence for the battery to die and the exhaust manifold to become cracked all at the exact same time but I guess anything is possible. I guess my question is...is there something that could be causing this smoke and smell that could be linked to the battery being jumped incorrectly?
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This began as a troubleshooting exercise for a P0442 code (2002 model) indicating a leak in the evap emissions system. Often caused by simple things like a loose/poorly sealing filler cap. Not this time
It's a neat design, tucked away up in the fender well. Even sports a very effective stone guard (plastic shield) which hides all that tubing from view. But the shield also traps all the road salt and mud and packs it into the crevices between the tubes where it stays from one winter till the next. Even a powerful car wash probably can't dislodge the caked on mess once solidified.
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For a couple months now, maybe longer, my 2010 Accent has developed a funny "rough sputter" I would call it at idle. It seems to be getting worse and worries me now. The RPMs fluctuate as it happens. The CEL has never come on throughout this. I'm not 100% sure it's not present when driving.
I did not replace the Fuel Filter at four years or the Fuel Air Filter at two years & four years. Could this be a Fuel Filter related problem?
I got out of my car today to listen to it and noticed the exhaust was intermittent along with hearing the car sputter.
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I've gotten the P0442 "small leak - intermittent" code and "service now" warnings on my 2007 2.0T Passat. I have also occasionally gotten the "check gas cap" warning and icon on the dash, but it always goes away quickly. The car runs fine. The VCDS scan shows as follows:
Address 01: Engine Labels: 06F-907-115-AXX.lbl
Part No SW: 3C0 907 115 S HW: 8P0 907 115 B
Component: 2.0l R4/4V TFSI 0020
Revision: --H14--- Serial number: VWZCZ000000000
Coding: 0404010A19070160
Shop #: WSC 24125 444 85663
VCID: 3041CBF8A31AF19890B
1 Fault Found:
001090 - EVAP Emission Control Sys
P0442 - 001 - Small Leak - Intermittent
[Code] ....
If I clear this code, it comes back within a day or two of driving, but not immediately. I have already replaced the gas cap and N80 valve. The other component I'm aware of possibly failing is the check valve. It's just downstream of the N80 valve, circled in red here:.
I put a vacuum on this part, and it had a very slow leak, losing about 3psi (starting from 20psi) every minute. That seems too small a leak for this to be a problem? Is this thing supposed to be absolutely air tight? Since this part is more expensive ($80) and bit more hassle to replace than the N80 valve, I'd like to know more about this before I just blindly replace it.
If this check valve isn't the problem, then what to check? Although the car runs fine, I need an inspection and would prefer to not have to clear the codes and hope for the best just before taking it in.
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A little background on my Prius, I have an 08 that has around 179k miles on it and have never had any major mechanical problem. I have always kept up with routine maintenance. I use Synthetic oil and change it about every 6500 miles.
So, two weeks ago, it was time to change the spark plugs again. Carefully, I took out the old spark plugs and installed the new spark plugs. On the second spark plug wire and spark plug, I noticed a little bit of oil, so I wiped it off with a shop towel, installed the new plug, and kept going.
Interestingly enough, now I have a problem where when I first start my car (and only when I first start it) and I just have the interior fan running (not with the A/C on) I get some serious extreme exhaust fumes through my A/C vents and that wasn't happening before I changed the spark plugs.
Now my first thought was, "Shoot, what the hell did I do to my car?!"
Here's the weird part, once the ICE has warmed up and shut off for regular "ready" mode, I don't smell it ever again even if the ICE activates as I'm driving. Note that at this point, I haven't made any changes to what fan speed or setting the climate is on.
As soon as I turn my car back off, then back on again by pushing the power button, out comes the awful exhaust fumes again.
So, here's where the testing stage comes into play. I have tried everything I can think of. Yesterday, my father take the air box off and we made sure all of the hoses were attached and the recirculation hose didn't have a clamp. We replaced the clamp and resecured all of the hoses in the engine thinking that there might of been a loose hose with the exhaust recirculation.
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I've had my car for 6 months and have noticed that when I start my car with the vent on blowing air I can smell exhaust fumes. It doesn't seem to happen every time and if I start the car with the air off I don't smell anything. I can turn the air on after ten minutes of driving and the smell is there at first then seems to go away, either that or I get used to the smell. My closest dealership is 60 miles away
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I have been getting exhaust in my car cabin since last fall. It is worst when I first start up the engine. Once I get driving, it's not so bad. Switching off the heat or recirculating the air does nothing to change things. I used a CO detector in the cabin and the alarm didn't go off, but it still worries me that I might be breathing in carbon monoxide. And none of the shops have been able to diagnose it, let alone fix it. The first shop installed a new 'flex pipe'. The dealer thinks it's coming from a gasket near the flex pipe. The exhaust manifold is not cracked. A muffler shop said there was no leak. Is it possible that exhaust is somehow getting mixed into the air via a faulty valve or vent?
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After I start the car, warm up a bit then drive, there are exhaust fumes that get into the cabin as you can smell them.
It's happening more often now. I have spoken to my Phaeton tech who said that the car has a sensor that goes off and shuts down external air if it notices exhaust uses getting in.
I have been hearing a little bit of road noise on the driver side so I'm thinking some fumes are coming in from the door seal (although it looks fine).
Sometimes it's bad enough that you have to open the windows or you will feel sick. It passes within 5 minutes or so and the car is fine after that. It only happens right after ignition for a few minutes.
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I have been having an issue with exhaust fumes in my 13 GT (16,000 miles on it). I am positive its from the exhaust. Its definitely the "rotten egg" smell, not raw gasoline. I don't hear any leaks though.
It only happens when going up a hill when the engine is under more load than usual or under heavy acceleration. I am going to call the dealer about it and have them look at it.
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I have a 2005 Passat and recently I noticed an exhaust fumes smell inside the car; windows closed. This occurs when driving in no traffic... My circulation is on open or outside air...
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I have just joined, and posted as below, not sure where it went though so here it is again. As I suspect with many others newbies I am posting to try and solve a problem. I have a 2005 Hyundai Accent diesel (with only 54000 on the clock) which worked OK for over a year. I now has an intermittent starting fault. It played up in the winter, fiddled with the fuel filter and was OK for months, also had it serviced beginning of year. It then played up again a few times recently so had the fuel filter changed. Now worse than ever! This model does not have glow plugs, apparently a fuel heater. If starts 1st time works perfectly. Otherwise it can take up to 10 times to start. Seems no particular circumstances. Usually starts from cold but I do a lot of stop start driving. Took back to local garage and they couldn't get it not to start! Started ok 3 times this morning only to stop on the 4th. I fiddle with the fuel filter and connections and it goes, but this could be pure co-incidence?
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My ugly little 2000 Accent that I've taken careful care of for 240,000 miles has developed an intermittent, multi-symptom cold starting problem, how to solve....
Background on the car: I've owned this car since it had only 9,000 miles, so I know everything that's happened to it over the years. I've kept up on all the regularly-scheduled maintenance over the years and miles - oil changes, timing belts, engine coolant, water pump, belts and hoses, pcv valve, plugs & wires, fuel and air filters, transmission fluid, etc.
No check engine light on, no codes to diagnose available
Not leaking oil from the top or the bottom
No vacuum leaks
Runs strong, no loss of power or rough running at idle or under load
No major components related to spark and fuel delivery have been replaced - coil pack, fuel pump, etc
Symptoms:
Starting problem 1 - The car will simply refuse to catch and start up, sometimes for as long as 10-15 seconds of cranking, after which it starts and runs normally. This happens infrequently, but has been becoming more frequent in recent months.
Starting problem 2 - The car will immediately start to fire (one or more of the cylinders will catch), but will hesitate to fully start up for about 2-3 full engine rotations, what I would describe as a rough start.
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I have a 2000 LC that has a few symptoms - intermittent misfire/running rough at these times it has:
dark smoke
uses 3 times the fuel
loss of power (to normal)
will pick up revs slow without running rough and runs normal at high revs.
dies misses and then picks up revs slowly when accelerator is pushed fast to the floor from idle.
Hyundai mechanics checked computer and it coded change spark plug leads this did not fix the problem, and have no idea.
About 6 months ago the car was doing the intermittent thing when it died and liquid was heard splashing on the ground. I found the main petrol line connecting to the pump had come completely off. After replacing all problems ceased and the car ran perfect with full power etc.
I've checked the fuel lines none appear to be leaking etc.
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Why when I come to a stop with the heater on, the car smells like exhaust? I took in into our local Subaru shop and they couldn't find anything wrong. When I'm driving it's fine, but in town or in traffic, I have to keep shutting off the heater. If I forget, the car fills up fumes and I have to drive with the windows down or my daughter's asthma flares up.
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Newly acquired 2002 Accord.
At idle and while at a stop, the cabin receives a heavy dose of exhaust fumes (nope, not from the auto in front of me - I'm often alone at stop lights/signs)... what is the most likely culprit?
This did not seem to occur until AFTER I had the timing belt (package) replaced...coincidence
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I have a 4dr 2005 Hyundai Accent, CL. It has 139,927 miles on it.
Today when I was accelerating onto the Hwy, a dashboard light came on. When I checked the manual it says "Malfunction Indicator Light". It says, This light illuminates when there is a malfunction of an exhaust gas related component and the system is not functioning properly so that the exhaust gas regulation valves are not satisfied.
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I've been getting bad gas mileage for the past two years or so. I also get a fume smell when I run the car for a while. I have strong suspicion there might be a leak in one of the exhaust gaskets.
I'll be changing the exhaust manifold gasket and both exhaust flange gaskets. I'll also be changing both O2 sensors. The car runs well and smooth. It's just those two things.
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