EGR valve disablement
EGR VALVE AND EGR HEAT EXCHANGER
Complete high-quality service to restore or disable the exhaust gas recirculation valve and EGR cooler of Passenger cars. Solving problems from experts in this matter.
WE CARRY OUT A FULL SET OF WORKS WITH THE EGR VALVE
- DIAGNOSIS OF A FAULTY EGR VALVEFind the exact cause of system failure and return it to working condition
- DISABLE EGRA full range of work, including mechanical blocking of the exhaust gas supply (or complete removal of the EGR valve) and reprogramming of the engine control unit.
- MECHANICAL CLEANINGCleaning a blocked EGR valve and restoring functionality
- HEAT EXCHANGER (COOLER) EGRSolving problems with a leaking EGR heat exchanger or completely removing the cooler and installing specially made plugs
DETAILS ABOUT EGR VALVE
Problems with the EGR valve
Despite its apparent simplicity, the EGR valve is a rather complex and sensitive mechanism. It operates in a very narrow range of speeds and loads, and its incorrect operation leads to big problems. Signs of a faulty valve:
- “Check engine” symbol on the instrument panel (also a spiral on VAG cars).
- The car begins to jerk violently, smoke, and stall.
- There is a sudden loss of traction or constant jerking when accelerating.
- Jerking on a cold engine that disappears after warming up, or, conversely, jerking on a hot engine, while on a cold engine everything is normal.
- An accumulation of dirt in the engine intake system.
- Fuel consumption increases sharply.
Why does EGR fail? It's simple - in 90% of cases it becomes clogged with resins and deposits contained in exhaust gases. In other words, the cause of failure is the dirt that it itself creates inside the engine. 10% is due to wear or problems with the EGR electronics. Where does dirt come from? Some of the exhaust gases return to the intake manifold, cooled in the heat exchanger, and just during cooling, a thick layer of tar deposits begins to grow. It is EGR that creates all the dirt that can be observed in the intake manifold, which leads to a significant deterioration in engine power characteristics, as well as failure of the swirl flaps in the intake manifold. Also, most EGR valves have their own radiator (heat exchanger) to cool the incoming exhaust gases, which begins to leak and leads to a constant leak of coolant. As you can see, this valve creates quite a lot of problems.
SOLUTION OPTIONS for EGR PROBLEM
The easiest option is to simply replace the faulty EGR with a new one. Plus - the system works again. Disadvantages - as before, all the dirt from the exhaust gases will enter the engine and clog the intake manifold, the problem will repeat in the future, the price for some models can be more than 1000 euros, and replacement of car parts due to complexity can cost a significant amount. Also, some cars have 2 valves and require pair replacement.
The second method of solving the problem. By deep cleaning using special chemicals, complete restoration of the valve’s functionality is achieved (if the malfunction is caused by clogging). This procedure has different costs, which depend on the design of the valve and the complexity of its removal/installation. Performed with complete dismantling of the valve. Pros - restoration of performance, cons - recurrence of the problem in the future, further entry of dirt into the engine.
The most effective way to solve the problem once and for all. When the EGR valve is removed or blocked, this system is completely disabled, the valve is mechanically locked in the closed position (if necessary) and the engine control unit is reprogrammed to operate without this system. Plus - you solve the problem with this unit forever, clean air enters your engine, there is no more dirt and deposits in the intake manifold, on the valves and cylinder-piston group, power increases slightly due to the combustion of a clean air-fuel mixture, without exhaust impurities. Cons - increased NOx, in some cases it is also necessary to remove the DPF. The rest (smoke, impossible to pass maintenance, etc.) are a consequence of poor quality work. Also, the advantage of disabling the EGR valve is the ability to once and for all solve the problem with the EGR cooler by completely removing it.
