Egr switch off. You'll either need to clean or replace the EGR valve.

Egr switch off. The EGR solenoid controls the vacuum process through the valve and if it malfunctions, major problems can develop. I am curious. Thanks Oct 20, 2011 · sssoooo as we all know there is a egr port that runs across the heads via the intake manifold. Jun 9, 2015 · Here I attached the original and EGR off. Other Part Number : 55214638. can somebody help me find these or switch egr off to my file? 2005 vw touran 2. As I know there is a diagnostic checking before you turn the car on, and there have to be a diagnostic parameter to check a component is it okay or not. after that: remap-peugeot-406-2-2hdi-4hx-pre-multiplex-t11/page10 Author: RPM freak Jan 2, 2015 · The most "guides" or posts talk about setting the EGR switch to 0 and flatten out the EGR map to fully open. The purpose of this exercise is purely educational, and to get used to changing parameters in winols. Feb 25, 2025 · What Is an EGR Valve and What Does It Do? The EGR (Exhaust Gas Recirculation) valve is a critical component in a vehicle’s emissions control system. On my Alfa Romeo 1. I'm new to the site so if the answer to my question is threaded already, sorry Today's question :) is, I have 88 Diplomat 318 2bl and doing the Lean burn delete and I'm having a hard time finding a egr Block-off plate online. However, EGR delete is illegal for on-road use in many regions due to higher emissions. 3. After reflash test with Clip or ddt2000 - EGR always mast be 0% at stopped and running engine. Jun 27, 2012 · Re: Egr Off switch solution in EDC15C2 PSA GROUP by Hellbound » Wed Jun 27, 2012 6:56 pm yes there is a enable bit on the PSA EDC15c2, but you can not find all enable bit as easy as you mention. Apr 11, 2011 · Block off the EGR holes on the back of the intake, remove the hardware and have Mick tune it out? Can I get rid of the air pump down in the corner of the bumper too? Bot VerificationVerifying that you are not a robot OEM EGR Vacuum Switch Purge Valve Solenoid 55214638 552 146 38 Fit Fiat Nuevo. Always check EPA and local emission regulations before performing any delete modification. Mar 31, 2002 · At idle you should be able to remove the hose from the egr valve and nothing will happen. This issue was identified as a faulty exhaust gas recirculation (EGR) switch valve, which resulted in a lean fuel-air combination. Aug 25, 2016 · Just trying to get my 93 LX coupe to pass emissions and I need to locate the EGR vacuum switch. When I freak jack EGR stops functioning valve and turbine Jun 14, 2022 · Your car's EGR valve allows the exhaust gases to recirculate through the combustion chamber to reduce emissions. With support for 240 popular vehicle models right out of the box, it offers a seamless and efficient experience. I would like to find this switch to turn off the EGR. Bookmark. So that even when disabled, one of the valves is still always open. Re: EGR switch for MB E220cdi EDC15C6 by Daggi » Sat Nov 14, 2015 2:36 pm Hi. Also I see egr off and the engine, at idle , the value of intake mainfold pressure decrease too much ( 700-750 mbar, because of intake flap and no egr rate). When an automobile’s eruption temperature overextends 2500 phases, the EGR valve spreads, and the nothingness sketches in the exhaust to help counteract dangerous emissions. Anyway, is there any switch or something like that which could guarantee for the EGR to stay closed in EDC15P VAG PD-s without filling 850mgs of air the whole EGR map? Sep 3, 2023 · hello, cant find switch to completly remove egr from this ecu, i've removed egr and shuter valve, but car gives P3130, egr map is maxed out. Step 1 The first thing you need to do is to find the location of VSV Toyota. This occurs during specific engine conditions, such as cruising and light acceleration. If you 2025 New V1. Author Topic: EDC15 EGR off bit location. Jun 10, 2015 · The ECM looks at the EGR "temp sensor" at start up (it's actually a thermostatic switch) and if it see's it's closed (grounded) it will set the code right off the bat. This tool uses an annual subscription model for updates, support and online services. How need to turn off the EGR? I can't find a egr off switch ant hysteresis map. Dec 23, 2016 · Volvo D5 EDC15C11 EGR off by Tdic » Fri Dec 23, 2016 12:26 am Hello. It details using WinOLS software to edit the engine control unit map and change a hexadecimal value from 00 to 01 to disable the DPF, as well as disconnecting specific sensors to disable the EGR and DPF systems. rar 138 132. Poprawne wyłączenie EGER w sterowniku EDC15C7 (winols) All operations are easy and safe. If so does anyone know the code for switching the EGR OFF. May 17, 2004 · You can test the EGR temp switch off of the car by hooking up a voltmeter between the wire lead and the metal body of the temp switch. 8. For diagrams, look on the radiator Hey Anyone of you have a clue how to disable EGR without any DTC on EDC15C2 (Citroen C5, 2. By reintroducing these gases, the EGR system lowers combustion temperatures, preventing the formation of The ECUDesk Multi Function Software is used to EGR, DPF, NOx, SCR, CAT, SAP, EVAP, FLAPS, DTC off quickly and easily. ECU: 0281011311 038906012HC Thank you very much Hi I have Giulietta 2. Bench & dyno-verified ECU solutions that safely disable DPF strategies and diagnostics. Nov 13, 2012 · Car: 1996 Camry, 4 cyl. EGR Delete/EGR OFF Service/Everything You Should Know About EGR Removal What is EGR OFF? EGR Off refers to disabling or bypassing the exhaust gas recirculation (EGR) system in an engine, typically through ECU (engine control unit) remapping or physical modifications. We will explore the process of disabling the engine's EGR system and the advantages of this approach. Attached obd read from flex. I diagnosed it to make sure it's functioning properly, and then I relocated it to a more convenient location Aug 22, 2012 · reinzg, egr switch for this file is located at : 71B55. Feb 15, 2006 · C4 Tech/Performance - 87 EGR Valve (Keep or Remove) - Hello All, My 87 has a bad EGR valve and I was wondering if it's worth replacing it or just removing it? A new EGR runs about $70 and I did read the article from Vader86, but I'm still unsure what to do. Learn how the EGR system works, common faults, safe software and hardware solutions, and post-tuning checks using TuningBot methods. Jul 18, 2013 · Learn about exhaust gas recirculation (EGR) and its role in reducing vehicle emissions. 0jtdm 170km and i want to EGR OFF. try your textstring on a xantia 2. thanks manuel Apr 8, 2014 · After changing map, need unplug and block the tiny tube that goes to the valve, block the EGR tube that goes to the inlet manifold. Is this true? How does emissions intact tuning truly disable it if this is the case? Feb 27, 2017 · Hello mates, in the older EDC17 I was able to shut off the EGR by setting the Hysteresis Maps to zero. Could someone help me? You do not have the required permissions to view the files attached to this post. The EGR valve on 85-90 Corvettes is opened and closed by the EGR Control Valve Relay Solenoid (GM's name). The time is based strictly on engine load and temperature. Set the number of columns to 10. I May 28, 2019 · Hi guys, There could be a one digit switch in EDC16C34 PSA ecu to turn off completly the function of the EGR. Apr 19, 2020 · For vacuum leaks, do a smoke test. Dec 29, 2013 · Re: edc15p egr off switch location by bogdanwmw » Fri Jan 17, 2014 10:37 pm For EDC15P EGR close to the maximum value is put in the map. This I know and have already done ;). Look at 8bit mode you will se value 001. I need some help. After this mod the EGR duty cycle shows 0 percent, the idle air flow has increased and there is no DTC about that but since this is only a cheat and not a true switch - the EGR valve must be connected and Mar 17, 2018 · Hi all, There could be a one digit switch in EDC16C34 PSA ecu to turn off completly the function of the EGR. It enables fast and easy disabling of systems such as EGR, DPF, NOx, SCR, CAT, SAP, EVAP, FLAPS, and DTC. Now, set your meter to check for continuity, and hold a lighter under the end of the temp switch. 0. After all those years, is a must. 4. The egr switch is it a solenoid like the purge solenoid cause if it is I have 3 of them that have vacuum flowing through the input port/lower input with no power. I've managed to undo the sensor and remove one of two Torx bolts, but I'm Oct 28, 2013 · Hi, I am looking for the EGR switch (1/0) to turn definately the EGR OFF. (Read 22855 times) 4 days ago · Professional DPF Removal (FAP Off) by TuningBot. Aug 21, 2024 · Exhaust gas recirculation (EGR) valves, do exactly what the name implies. EGR Off Firmware The Exhaust Gas Recirculation (EGR) system can restrict the performance of the car, but disabling this system through ECU firmware editing can lead to significant improvement in its operation. Also what are these 3 connectors for? Thanks! Feb 7, 2021 · Ive searched on here for, "egr" and "egr block off" but no results. 6 days ago · EGR delete removes the exhaust gas recirculation system to boost engine performance. A professional installation and ECU tune are required to ensure proper This article describes the deactivation of exhaust gas recirculation (EGR) in diesel engines. You can find the how to replace most vacuum lines in my post. A bad one needs to be cleaned or replaced. , 191000 miles Hey Everyone, While doing my timing belt and oil seals change, I also removed the Vacuum Switching Valve (VSV) for the EGR. Going to the charcoal canister. Thanks. If you pull the hose off the egr at idle, and it changes the way the engine runs (or if you put your finger over that hose and it sucks) then the egr system is malfunctioning in some Dec 10, 2016 · GM also used different TVS over the years to control EGR valves, evap canister purge, heat riser valve operation (called EFE - early fuel evaporation), and choke pull-off diaphragms. The most common cause of EGR failure is a buildup of carbon sludge Nov 3, 2023 · 10- EGR Switch Valve Problem Previous models of the Hyundai Sonata faced the issue of the EGR switch valve. You'll either need to clean or replace the EGR valve. Thanks Dick Apr 9, 2014 · Re: EDC16C39 egr switch and hysteresis egr off by tommix » Thu Sep 19, 2019 11:54 pm Switch method is not that good, better to use hysteresis. thank you Thanks given by: Reply EnkotuningReading Thread EDC16C35 E60 auto to manual Reputation: 11 Thanks Given: 4 Thanks Received: 16 (5 Posts) Posts: 11 Threads: 1 Joined: Jun 2022 2 01-14-2023, 03:06 AM This is accomplished through an EGR vacuum control solenoid. I found the switch in adress 11b06, using AES Universal EGR Remover and a hex comparer. Feb 23, 2011 · Egr switch (it's known for a long time) and cowVAR_LDR=8 when removing the throttle works fine Remember - if you use a switch to disable a device, you have to disconnect it electrically from the wiring (I've mentioned it before - Bosch described it in the "funktionsrahmen" of EDC). Oct 27, 2023 · A faulty EGR vacuum regulator will have symptoms like an illuminated check engine light and rough idling. Jan 1, 2021 · EDC15 EGR off bit location. Can You help? Feb 24, 2012 · 1. 0 ECUDesk Multi Function Software for EGR DPF SCR (AdBlue) NOx CAT SAP EVAP Flaps DTC OFF Jan 14, 2014 · EGR OFF. After applying the new improvements to the ORI file – you can easily write it back by OBD. You do not have permissions to view the files yet. As I know I have cleaned EGR system out well, was really clogged up, have also blanked off, but now have engine light ON. I know how to disabel by histeresis but i cannot find switch. Feb 22, 2010 · Hope this is the correct place for this question. Either type has battery plus on one side, and the computer operates the solenoid by grounding the other side when it wants to turn the EGR on. org/image/44q4fdle5/ Jul 11, 2006 · C4 Tech/Performance - LT1 EGR RemovalPros/Cons/How To - Well considering how much of a pian in the butt it is to pull the egr everytime you take off the headers or the intake manifold on an LT1, I was wondering what was to be gained by removing it completely. Engine Control Module (ECM) Signal The ECM sends a signal to the EGR vacuum solenoid when it’s time to recirculate exhaust gases. It circulates, exhaust gas, for a second time, reducing emissions. This true for all Renault EDC15. First off, let me explain that I know the EGR can be turned off by a single switch value. 7-3. Oct 29, 2025 · Powerstroke Delete Tuner for SCT Devices will turn off the DPF and EGR emission systems on your Ford Powerstroke truck. It can reduce maintenance costs and improve fuel efficiency. Oct 1, 2016 · It works well but only with Egr module connected ( without electrical fault). When you are sure that EGR is off in ecu, unplug EGR jack - according to May 11, 2019 · Hi, I'm trying to remove and replace a faulty EGR valve on a F10 B47 engine, 520D. Do not throw away your smog equipment for two reasons. For proper find EGR switch you mast count 10-th position right to left begin from 1-st left from 048. Feb 8, 2013 · EGR Off on EDC15C6 Mercedes 320CDIW210 by Aluman » Sat Feb 09, 2013 9:51 pm i search a switch solution for complete EGR Off on the EDC15C6 Mercedes 320CDI Oct 5, 2024 · Description:In this video, we focus on disabling the Exhaust Gas Recirculation (EGR) system in the BMW EDC16 ECU by modifying the EGR Hysteresis maps. EGR systems represent critical emissions control technology that, when properly maintained, provides years of trouble-free operation. By using hysteresis you at least can see with diagnostics that egr is not used, while if you use switch method you cant tell is egr used or not because cable is disconnected. 9 JTD 8v euro 3 I removed all the EGR hardware. Can anyone help me please ? I would like to know where shall I map my bin. but cant find any. Nov 20, 2022 · How Do You Tell If the Toyota Vacuum Switch Valve Is Bad? The Toyota vacuum switching valve is a part of the exhaust gas recirculation (EGR) system. In this case, the timing of a visit to the car service is not always clear, because the car is functioning, although not properly. One, you may need it later on down the road. When a vehicle’s combustion temperature rises above 2500 degrees, the EGR valve opens and the vacuum draws in exhaust to help balance out harmful emissions. 001 -->TURNED ON, 000 --> TURNED OFF, so if you want to turn it OFF you have to sat that value to 000, make sure your checksum is correct and blend your EGR. (Read 23915 times) Dec 8, 2024 · 1. Step 3: Turn off the AC and Defroster While the air conditioning system and defroster are off, speed up your car up to 50 mph within 15 seconds. Check compatibility and start your request. May 4, 2021 · Here you will install the turbo block off plate by putting the EGR delete kit blanking plats and gasket on the turbo manifold and then locking it in place with the bolts in your kit. You also have a switch over valve, deep about 6" on the left side of the fuel distributor. How to turn off EGR in Fiat/Alfa/Kia 1. If you own a Toyota, this part will be useful as we’ll show you how to test the Toyota VSV valve. What is really happening when I turn off the EGR on my LLY Duramax diesel? Is the ECM still running the EGR confidence checks? Is the EGR turned off for all conditions? If the ECM knows the EGR is commanded off do I still have to disable all the EGR DTC's. Also no clicking when power is applied. Activation of the Solenoid Upon receiving the signal, the solenoid opens, allowing engine vacuum to actuate the EGR valve. The time now is 09:29 PM. can someone help? thanks in advance Jun 22, 2018 · Hello, the car is in limp mode, i need egr off please. If this is the case we can still remove the EGR using blanking plates or in some vehicles changing the inlet manifold allowing fitment of our EGR Delete Race Pipe Kits. Explore different EGR valve designs and diagnostic procedures. This technique is generally also called EGR delete or EGR off. Author Topic: EDC15 EGR off bit location. If the car undergoes regular maintenance, the resource of the EGR valve is not less than 150 thousand However, the software EGR delete/EGR off method is one of the most common, low-risk, and inexpensive methods. , 5S-FE, Auto Trans. Look for: 001 001 000 000 001 000 001 000 001 048 string. The first 001 is EGR Switch with/without (1/0). Key Features: No More Dongles – Work seamlessly without extra Sep 9, 2025 · Benefits of EGR Off Improved Engine Performance: Disabling the EGR system can lead to increased power and torque, as the engine can operate more efficiently without the dilution of the intake charge. So better go for hysteresis :) Apr 27, 2012 · Just a couple of questions about the EGR and FAP maps. 2. You have to be registered and you have to make at least 3 quality / unique posts. I think that says colleague autobamm. Once the valve is either removed or blanked off the vehicles ECU will no longer get a signal from the EGR Valve causing the emissions workshop light to appear on the dash board. Dec 18, 2024 · When it is necessary to disconnect EGR For many owners of cars with an exhaust gas recirculation system, the question of disabling EGR arises unexpectedly. You will get an 4MB ORI for EDC17 / MEVD17 and 8Mb ORI full file in case of MDG1 ECU’s that you can tune to your liking: chip tuning, DPF switch off, EGR switch off, catalytic converter removal, Vmax, etc. And with this valve should be removed or not? Mar 16, 2009 · Some potential problems that would cause a code on these systems are: Ruptured EGR diaphragm, broken vacuum lines, defective or plugged EGR Solenoid, poor connections to the solenoid or diagnostic switch, or a failed diagnostic switch Jan 13, 2023 · I need to deactivate EGR on EDC15C6. And Two, there are people Feb 24, 2023 · Hi, I need egr off for this renault with disconnected plug. What Is an EGR Solenoid Malfunction? An EGR switch consists of a valve, a nothingness, and a solenoid. Apr 1, 2025 · More importantly, EGR deletion often causes other problems including increased engine knock and reduced fuel economy. don't forget to hit thanks and reputation buttons EGR solenoids are used to switch engine vacuum on and off at the right time. What the heck. May 14, 2012 · Re: EGR off on EDC16C34? by Hellbound » Sun Jun 24, 2012 12:27 pm with a litle help from xinpl, i was able to turn off te EGR valve on my car. If it is defective and does not switch on at all, the engine will ping and rattle under a Mar 7, 2019 · I read somewhere that the EGR has 2 butterfly valves set 90° off of one another. . If the EGR circuit activates too soon, the engine will miss and run badly, or not at all. The second 001 is Boost Control Switch with/without (1/0). Bet the rubber connectors, tubing, are history. The EGR control solenoid may be an on-and-off type switch, or it may be a modulated-pulse width type. Manufacturer Part Number: 55214638. Sep 27, 2011 · C3 Tech/Performance - EGR switch - Parst shop said that there is a purple or a white swich for my 1980. The vacuum modulator regulates exhaust gas recirculation (EGR) flow by rapidly turning the vacuum on and off while modulating the pulse to precisely control EGR flow. This document provides instructions for turning off the diesel particulate filter (DPF) and exhaust gas recirculation (EGR) systems on Volkswagen Group 2. 0L TDI engines. The solenoid fails at a much higher rate than the EGR valve and typically Again, don't be scared The easiest way to look at it is to remove anything that is not your Weber, intake manifold, head, block, distributor, water pump, timing cover, oil pump, headers and valve cove, but remove anything attached to those parts and cover the hole. First question: Please see attached EGR map. 0 HDI, 107 PS)? I was messing around with the FLOW MAPs - requested 600mg of air and it looks like the Antipollution doesn't appear (egr disconnected from vacum). An EGR switch consists of a valve, vacuum and solenoid. Cars are noted to have harsh idling, especially when the air conditioner is turned on. Using suitable EGR off software such as WinOLS (or sometimes ECM Titanium), the EGR system can be removed from the vehicle's operating circuit via software, without any hassle. Jun 29, 2015 · Aerostar - Egr switch - OK need quick answer. 5 days ago · Comprehensive EGR delete guide for professional tuners. I do not no what to buy. If I wanted to 'flatten' (or disable) EGR in the EGR MAP, I guess Jul 7, 2017 · Zero cost reversable electrical EGR deleteAll times are GMT -5. This part is also known as the EGR Relay, EGR Solenoid and EGR Switch. I want to swith off the EGR anyone know if its possible to do myself, ie: getting a code reader, if so which is the best type at a reasonable price. Item Type: Vacuum Valve Purge Solenoid. It helps reduce harmful nitrogen oxide emissions by redirecting a portion of exhaust gases back into the engine’s intake manifold. 94 KB Download tuning stage 1, 2, 3,4-Launch Control-Sound Pop, Crackle and Bangs-option Multimap switching on Cruise Control + gas + brake pedals-Full Anti Lag-Edit DSG-NLS (No Lift Shift)-Flat Shifting and many more defined for customer needs what's up me by MP Thanks given by: Reply carremapsLocation Offline Reputation: 31 Thanks Given: 37 Thanks Received: 128 (82 Posts Either the EGR valve is leaking exhaust gasses in to the plenum (creating a vacuum leak/lean run condition) or the egr valve pintle is sticking open. Aug 4, 2014 · i find egr switch with my string in multyple file --001 000 001 000 001 048--this is last 6 numb and this is correct :) Sorry for my english I'm learning Deutsch,helped mee google translate :) Resource Highlights In this article you will find out about the basics of EGRs: How does an EGR valve work? Types of EGR valve Why do EGR valves fail? What to look out for in a failing EGR valve? Troubleshooting an EGR valve Common EGR fault codes How to replace a faulty EGR valve? Jan 1, 2021 · EDC15 EGR off bit location. If I do remove the EGR, does someone make a block off plate Apr 12, 2024 · EGR switch off and reprogrammation only Ask Question Asked 1 year, 6 months ago Modified 1 year, 6 months ago Apr 15, 2016 · Please EGR switch off. If not 0% - you did something wrong. Better Throttle Response: Removing EGR can enhance throttle response, making the vehicle feel more responsive during acceleration. ive heard about blocking this off but what is the function of that port? looking for hp n economy. 9JTD 8V EDC15C7EGR Switch - first bit - 1 1 1 1 0 0 1 48EGR map - fill with 12740Disconect plug Sep 24, 2019 · EDC15P EGR off with switch by viktor0221 » Tue Sep 24, 2019 11:47 am Hello everyone, I have made some EDC16s with EGR hysteresis maps, and could easily find the switch off. Your vehicle will also most likely fail emissions tests. Then engage the vehicle’s 4th gear and drive the car for about 10 to 15 minutes at highway speeds. That works fine for May 8, 2023 · Switch off all accessories, including the rear defroster and air conditioner. Have anybody a pdf file or map adresses, so i can practice my self. Feb 14, 2007 · I'm looking at the EGR removal kits that Devon4x4 do, nice and shiny, but a bit spendy What is exactly involved with the EGR removal on Td5's? just a case of blanking off the end of the pipe on the engine (i made a plate up on mine) or better off to remove everything associated with it? Do any Jul 7, 2024 · C3 Tech/Performance - EGR TVS switch install help - So while replacing old emission hoses i broke off one of the connectors to the purple EGR TVS switch :banghead: I figure I need to replace so I?ve found right one on Top Flight but before installing, do I need to pull power from battery? I think I just need to crank Jul 18, 2017 · EGR duty cycle is reduced during cold weather, and with those maps you can completely turn it off through the whole temperature range. I have attached my bin, thanks for your help. Isn't it just an on off solenoid. Aug 12, 2023 · What is an EGR Delete? Do you just switch your EGR off or do you delete and remove the EGR or should you keep it on? We discuss the pros and cons of EGR deletion and removal in this video and Sep 2, 2020 · EDC16u34 egr off by Veltmann66 » Wed Sep 02, 2020 7:08 pm hi! looking egr hysteresis maps to switch off egr. Look the hex dump in 8bit Text mode. Aug 15, 2012 · Length of switch string may vary in differ EDC15C3. and what are the benefits from blocking it off? My real question is with the EGR and the options of unplugging, blocking off the EGR or Deleting via removal? So I’d prefer to just leave the EGR cooler and to just block off the manifolds but not completely remove it, from my understand though is this will leave one piece of the EGR delete kit which is the coolant bypass plate uninstalled Apr 12, 2015 · Here switch EGR? 01 way to 00? http://postimg. Found my EGR was working, but leaking from the stem. Egr doesn't have vacuum going to it and I don't see the switch. I'll test the cowFUN_M_L=18 as soon as I finish my car. Mar 26, 2025 · ECUDesk Multi Function Software is a powerful ECU reprogramming solution that operates without a USB dongle. 0tdi bkd/bmm no factory dpf thanks! You do not have the required permissions to view the files attached to this post. That's because at idle the ecu should be telling the egr switch on the firewall to block the vacuum signal to the valve. It should show continuity within 20 seconds or so when it heats up. 0 hdi and you can not find it, but is can giv you an idea how to find it. If I do a VCDS disable like in the link, where it’s set for off-road, donI have to remove the EGR valve All operations are easy and safe. 5. Aug 30, 2020 · database file originali ecu, dpf off Alfa Romeo, DPF OFF Chevrolet, DPF OFF Fiat, DPF OFF Hyundai, DPF OFF Iveco, DPF OFF Lancia, DPF OFF Saab, ecu tuning files download, EGR OFF Alfa Romeo, EGR OFF Chevrolet, EGR OFF Fiat, EGR OFF Hyundai, EGR OFF Iveco, EGR OFF Lancia, EGR OFF Saab, file ori auto, OEM ecu files, original ecu files. In axe X= mg per stroke Y=rpm/min and in Z= mass air flow mg per stroke. Are there any drawbacks? Besides the pipes, hoses, valve The EGR system is meant to reduce smog by reintroducing spent exhaust gases back into the combustion chamber to reduce oxides of nitrogen. I have the standard L48. Type : EGR Vacuum Switch Purge Valve Solenoid. ygvol 8vgqy iqw 9ad0m 7wrnb s4 4xq ldaartv llq8k wvu