Home » Repair tips » Where is the EGR valve located - cleaning or how to plug EGR 421
The EGR valve system is designed to recirculate exhaust gases and is located on the engine under the hood of your car. If you turn off the EGR valve, the emission of nitrogen oxide into the atmosphere will not be reduced.
The valves are installed both on internal combustion engines (except for engines equipped with a turbine) and on diesel engines. In the first case, engine detonation will be significantly reduced, and in the second, the operation will be “softer”. And importantly, fuel consumption will be reduced.
It must be said that EGR valves often lead to headaches for domestic car enthusiasts. This system is very sensitive to what you put into the car's tank (fuel quality has a greater impact on the performance of a diesel engine). And many people prefer to just drown it out
Due to the poor quality of the fuel mixture in this system, as well as in the intake manifold and the sensors installed there, carbon deposits may appear (if the system is not regularly cleaned), and this will lead to unstable operation of your car’s engine. The EGR valve itself is expensive, because of this, many car enthusiasts, in the event of a valve failure, do not replace it with a new valve, but prefer to shut down the entire system. Whether this is correct or not, you will find out from this article.
EGR valve and problems with it
Possible duplicates found
I don't know why I need this, but it's interesting.
It is also worth adding that not all manufacturers carry out control based on indirect signs.
Some (MMC) install a flow temperature sensor, some (Ford) a differential pressure sensor.
flow temperature sensor? I haven't heard. Air flow sensor - yes, but it's ancient. Differential pressure sensor - absolute pressure sensor (DBP) And I completely agree that not everyone monitors the valve.
I didn't know, thanks!
On Nissan engines with direct injection, the temperature sensor is also controlled.
But Ford and Mazda have a differential pressure sensor in the pipe that brings the bastards to the valve. Everything is as it should be, the narrowing in the pipe, the outlet tube before the narrowing and the outlet tube after the narrowing, both are inserted into the sensor.
Has anyone turned off the EGR on a Lanos? If the EGR valve is vacuum, then do you need to sew the brains?
Sureb B6 Restayl which is tdi 2.0 without a particulate filter, NN assembly or Kaluga, I don’t remember.
On my Lacetti I partially drowned it out (I left a 5 mm hole for it). Surprisingly, from such a simple action, consumption decreased by 1 liter. A little, but nice))
Why didn’t you turn it off completely?
I read a lot of forums about jamming - many advised not to jam it completely, so that pressure would not accumulate. Well, I myself am not a supporter of completely radical measures. In the end, I didn’t have to regret my decision. And now I don’t even want to check what will happen if I completely seal it up.
Maybe because of this sensor in winter the diesel starts poorly or does not start at all?
The operating logic of the diesel EGR valve is slightly different than that of the gasoline one. Yes, it can cause a diesel engine to run poorly, but the main reasons for a diesel engine to start poorly in winter are: low compression, bad glow plugs, bad diesel fuel, and poorly atomizing injectors.
99% of the culprits for poor starting in winter are dead glow plugs. And diagnostics usually don’t show this because... they are checked by ringing and this is usually a separate operation.
I physically removed the EGR valve (I removed it completely). The car started to drive easier and I started eating a little less.
Now I drive with a receipt, there is a person who removes them specifically for Land Rover, but I just can’t connect with him. Are you not doing such useful work?
Not yet. It is necessary to buy additional equipment in order to get into the brains of the car.
Author, thank you for this information, the owner of a 2004 Nexia himself turned off the valve himself, it is not electronic, the check does not light up, the car feels better, after reading the post I was scared, and then I realized that my EGR is not electronic
