It just turns out the valve commonly sticks open and causes the pressure drop. P1446 Nissan Description The canister vent control valve is located on the canister and is used to seal the canister vent. Operation takes less than 1 second. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows Control System Small Leak diagnosis. Material may not be copied or reprinted without written permission.
When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows Control System Small Leak diagnosis. I found, once the plunger already moved away 2-3 mm from its resting position, it didn't get stuck again. This is due to it being related to the system that deals with fuel vapors. The valve is normally open. Other materials: Diagnosis procedure 1.
The heat shield that goes over it is rusted out so I am going to replace it at the same time. There are a few clips that you need to find and remove. And have even been the the dealership, but only to hear some crap about the gas cap being on incorrectly. Our Service Engine Soon light came on around 30,000 miles or so. That is covering the Evap canister. But your description shows how painfully simple the repair is, to the point where no tools are even require other than something to press down on the electrical clip to release it. The more trouble codes there are, the easier it can be to diagnose a problem.
But they do sell universal cruise control kits. A plunger will then move to seal the canister vent. Is the inspection result normal? I sprayed rock guard under coating on the outside of the heat shield but I am not sure if I should spray the inside. It should, but double check to be sure. You should get the service manual if you want to identify it. I'm thinking of just taking mine off first, cleaning it out, and seeing if that solves it.
My state inspection is due this month and i need to fix this. I have heard this process may be very similar if not identical for other years of Nissan Sentra's as well. Is the inspection result normal? It sounds like you can't just replace the vent control valve itself but the evap canister itself too? The fix in this case is to replace the valve and install a filter to keep the crap out so the new valve doesn't get hosed. That held it for about 6 months. Any other input appreciated else I will advise with results! Hoping this will resolve the service engine light issue! Also, you will most likely hearly a whooshing of air as you open the gas cap. The next step would be to check continuity from the wiring at the connector to the ecm. Gas may also spew back out of the gas cap.
P0446 may also cause a slight gas smell. Is the inspection result normal? Operation takes less than 1 second. You just replaced the Vent Control Valve. My car is out of warranty, which is why I replaced it on my own. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. That would keep the valve closed all of the time. Make sure new O-ring is installed properly.
Locate the Vent Control Valve. Installing the filter might be considered optional if the valve will last 50000 miles anyway and you don't mind replacing it on that kind of interval. Ciao Bought the part online for about 98. I would check the wiring at the connector. Is the inspection result normal? If you are getting that message, plus a P0446, it may save you a ton of time and money to replace the fuel cap and see if it goes away. Many tries and repeated cleaning, got the same result.
I will post a picture of how it all looks underneath. This time it failed in the closed position which prevents air from escaping when you fill the tank. I cleared the check engine light last night and today it came back again. When looking under the vehicle you will see a silver metal 'heat shield'. I hate to suggest it, but your gas cap is tightened securely, right? Even someone with only very basic knowledge of vehicles should be able to save the labour cost of this procedure, and I'm guessing that if the original part is a weak design there will be lots of them failing after warranty expires. I sprayed rock guard under coating on the outside of the heat shield but I am not sure if I should spray the inside. Yeah I got under there and poked around and all the wires are connected and the bolts don't look too bad, though I haven't tried removing them yet so they could be pretty crusty.
If any of the lines are cracked you should replace them with new ones if you can. Hi friends, Sharing my experience replacing the Vent Control Valve. All this to keep a little gas vapor from escaping top the atmosphere. Do you have a diagram for where it is located on a 2000 Nissan Frontier? I'd like to do it myself as long as it is not a difficult job. Without using an expensive scan tool to operate the valve your best option is to check continuity on the wire from the plug to the ecm.