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12

The recall is not to remove the cheating logic; it is to actually make the engines meet emissions requirements so they do not violate the law any more. From Autoblog's initial article on the scandal: Volkswagen intentionally installed software in nearly a half-million diesel vehicles that helped the cars evade substandard results on emissions tests, the ...


8

Gasoline is made in large batches. Each batch has a number of attributes that should be met; Octane, specific chemistry, volatility, contaminates, ethanol content, and others. The output is dependent on the crude that went into the refinery and the processes the refiner has at hand to process it. Refineries vary in there capabilities. There are over 60 ...


6

For a pre OBD-II vehicle such as this one, the best thing to do is get it running as smoothly as possible, using normal maintenance and repair procedures. This means no misfiring, smooth idle, smooth acceleration, not overheating, etc. The same stuff you'd expect to work well in every day driving. There should also be no check engine light. This vehicle will ...


6

since installing new 02 sensor engine light has not reappeared after clearing w/obd2 device and torque free app. TOTAL COST= ~$27 7 31 13 ordered Koolertron F-12 ELM 327 OBDII PC Car Diagnostic Scanner Electronics EggDeal via amazon $9.50 to use w/android smartphone torque free app to read & clear obd codes 8 10 12 friend sprayed hoses he knew to be ...


6

Looking at the description of the California O2 sensor for your car, the only thing different on it (besides the internals) is the electrical plug. The wrench which you tighten it down with is 7/8", which means the sensor bung should be the same size as well. I don't think there is any real external difference between the California and non-California ...


6

The federal test procedures for vehicle emission certification(FTP) is run on a dynamometer. It starts with the vehicle at an exact temperature and barometric pressure and humidity. It is run in a lab that has carefully controlled exact air conditions that are maintained throughout the test. The vehicle is kept is stored at the test temperature for hours ...


6

Combustion Chemistry from Princeton This isn't much of an answer but here is some data from a Princeton class related to Combustion Chemistry. You will see that the table you are looking for is plotted. Here is the link to the PDF. Manufacturers of Emission Controls Association Here is a study from Manufacturers of Emission Controls Association. ...


6

tl dr: By adding a throttle plate, it creates the vacuum needed to draw in gasses from an EGR valve. Since diesel engines are designed to run lean, they don't need throttle plates to run. They utilize the amount of diesel fuel needed to keep the engine running and to provide the work needed to do the job required of them. One of the inherent issues with ...


6

They aren't better for the environment But efficiency is often confused with emissions. The average person would think that because diesel engines are more efficient and burn less fuel, they must be less harmful to the environment. I think few can be more authoritative than the folks at Bosch on why diesel engines are so prevalent (emphasis my own)¹: ...


5

Just to add to the other answer as I ran into this same issue, what kind of emissions do I have on my mitsubishi galant? I had this code: P0421 and I had to replace my O2 Sensor & the catalytic converter but I wasn't sure if I needed the CARB (California Air Resource Board) compliant ones or not. There is a label that identifies what type you have. I ...


5

There are two ways to tell. Your local ford dealer can tell by decoding the VIN (the vehicle indentification number). It is usually located on the dashboard at the base of the windshield on the drivers side. If you look under the hood there is usually a sticker on the frame near the radiator that will say complies with California or 49 state emissions. The ...


5

Open up the hood and look at the emissions control system label. That will indicate whether it meets California emissions standards or not. See this page from the California DMV for what to look for. Also, at least for California (Not sure about other California-standards states), you can register a 49-state vehicle in California after you move there if ...


4

Disadvantage is that tampering with emissions systems makes a vehicle no longer street legal. Other than that, it probably won't hurt anything at all. I don't see how removing EGR will increase power though. EGR closes at high power settings anyways. The gain would be entirely from some other feature of the racepipe (perhaps it's bigger). The fact that ...


4

The diagnostic trouble code is not to be looked at as a root cause of the system failure. (example. Replacing a blown fuse is NOT a solution) In all cases there are multiple components that can cause the same code to trigger. For instance, a possible vacuum leak, or EGR problems, and even a PCV issue, could all show o2 sensor readings with tendencies towards ...


4

With the check engine light on, the car is going to be running a fixed set of parameters from the Engine Control Module. For instance Fuel Pressure will be held at max pressure and timing and spark adjustments (if done electronically) will not retard or advance. One of the reasons this happens is because the Engine Control Module is not recieving all of ...


4

Yes, it will probably be necessary to fix the problem in order to pass emissions requirements. The secondary air injection pump on the Beetle is apparently used to accelerate the transition from cold start to hot catalytic converter operation. Without this system, it will take longer for the catalytic converter to reach operating temperature. The ...


4

The way I understand the issue, VW wanted to increase performance and fuel mileage. The easiest route was to allow the car to pollute more. This was not possible while meeting the stringent emission standards So they developed software that would allow the vehicle to pass the emission requirements only while in test mode. Then essentially alter the emission ...


4

Anti Shudder Valve Not a direct answer, but one engine component that many people confuse with a throttle plate on a diesel engine is called an "anti shudder valve". This looks exactly like a throttle body, but it only has two positions - fully open and fully closed. On an engine equipped with the device, the valve is completely closed when the key is ...


3

Do not put your bare hand over the tailpipe, it will get burnt. If you cannot hear an exhaust leak, puff puffing, you can pressurise the exhaust system with a rag over the tailpipe to make an exhaust leak more pronounced and tracible. The downside to this is that you can destroy the catalytic converter, so it is really not a good idea to do it. The way ...


3

The first thing to do is too take the EGR out of circuit. A quick and easy way to do this is to cut an old metal oil can(its thin enough for scissors) so you have a piece of the can that will fit between the bolts of the EGR. Tighten the EGR bolts up with the can acting as a gasket. Now try watching the MAF sensor voltage as you rev the engine sharply and ...


3

Bank 1 is the same side as the number one spark plug Bank 2 is the opposite side as the number one spark plug Sensor 1 is before the catalytic converter Sensor 2 is after the catalytic converter Bank 1 Sensor 1, would be the same side as the number one spark plug before the catalytic converter.


3

In the past, I've owned a lot of cars that were... iffy... when smogged. Here is the list of what I've done in the past. A lot of these steps are only marginally effective, but there are times I've squeaked by with a margin of 1%, so I think every bit counts. Make sure no error codes were stored in the ECU. In some places, an illuminated check engine ...


3

I am assuming that you are in NC based on your profile. You can obtain a wavier if you spend at least $200 I will list the rest of the requirements at the end of this post. I am leery that the catalytic converter is bad, the ECM (the cars computer) uses the post cat O2 sensor to determine cat efficiency and if it's bad as they said it could cause the ...


3

In terms of possible root causes for failure, the following scenarios are likely culprits for a cooling system to run too cool: A temperature sensor that's reporting lower-than-actual temperatures due to issues like drift/fouling/calibration. A sticking thermostat that is flowing more coolant than necessary to maintain 176 °F. Really cold ambient air ...


3

Every car's OBDII diagnostic is going to be slightly different (between manufacturers, anyway), but you should not be dismayed. You have five days until you fail your test, which is more than enough time to ensure your vehicle will be OBDII ready. This of course, does not mean if there is an underlying problem it won't cause you to fail for a different ...


3

Considering on this website they say you can figure out the amount of CO2 emissions per km based on the fuel mileage, I'd suggest they are saying the rate of emissions is proportional to the MPG (given their constant). This makes sense to me because there are so many carbon atoms in a gallon of gas. When burnt (correctly), the CO2 emissions are going to be ...


3

In my home state of Colorado, we are required to get emissions tests on our vehicles every two years (after they are a certain number of years old). They way they do this is they place the car on a dynamometer (like a treadmill), put the car in gear, and bring the wheels up to a certain speed. They have a fan placed in front of the car to help cool it down ...


3

The problem is they are running on an illegal tune. It is running all the time. They need to detune the vehicles so they will run within spec, or they will face greater penalties.


3

The black powder was charcoal from the evaporative fuel filter/canister. This filters evaporated fuel from your fuel tank. When your fuel tank gets warmer and the gasses expand above the fuel line they pass through this canister and are filtered out by the charcoal. When the temperature drops a reed valve opens due to the pressure change in other ...


3

I think you miss-understand how OBD tells that your car is passing emissions. All the car does is make sure that the emissions control systems are functioning and then it hopes that what is coming out of the tail pipe is OK. The car verifies that the fuel mixture is within tolerance, that the EGR is functioning, that the evaporative emissions system has no ...



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