The EGR (exhaust gas recirculation valve) ~ above the Dodge lamb mixes exhaust gas with fresh waiting from the intake manifold to lower emissions. The EGR valve offers an electrical motor controlled by the PCM to manage the amount of exhaust gas entering the burning chamber. When electric or mechanical EGR valve fail occur, troubles such as bad acceleration and also reduced fuel economic climate can result.
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This article applies to the evade Ram third Generation (2002-2008)
The EGR valve is an digital solenoid the moves a pintle, opening and closing a passageway because that exhaust gas to circulation through. The valve is bolted come the intake manifold/cylinder head and also a steel hose connects it come the exhaust manifold/intake manifold. An electrical connector sends and also receives signal to the PCM (powertrain manage module) to regulate the valves motion for optimal emissions. Once the engine is at moderate or hefty loads, the EGR valve will open to alleviate the formation of oxides the nitrogen (a poisonous gas) indigenous the combustion process. Once a problem occurs, the EGR valve can become stuck open up or closed, top to bad fuel economy, turbulent idling, and engine knock.
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EGR Valve Overview
There space several different manufactures to acquisition from when choosing an EGR valve. The factors in the decision incorporate price, easily accessible warranty, user reviews, and reliability.
|Warranty||24 Months/Unlimited Miles||Limited Lifetime||3 Years/36,000 miles|
Best Quality: MoparBest Value: Doorman
Symptoms the a negative EGR ValveStuck ClosedEngine Knock: together the mile pass, carbon builds up in ~ the EGR valve inlet and outlets. As soon as this limit becomes major enough, engine knock can develop. This is most frequently heard together a tapping or pinging noise, due to the fact that it is many noticeable during cruising and also moderate throttle. This occurs since the engine may not establish the poor amount the exhaust gas entering burning is not sufficient to combat engine knock. Fortunately, modern-day vehicles" computer systems are programmed with the reasonable to identify this EGR flow problem and readjust engine parameters too as collection the connected diagnostic trouble code.
Featured Video: What Knock/Pinging/Detonation sound Like
Stuck OpenPoor Idling, Stalling, and Engine No-Start: as the engine paint, etc in fresh air, it"s not expecting to have to compensate for the inert exhaust gas. No fuel is added to make up for the exhaust gas, and combustion cannot take it place.Poor Acceleration: The air/fuel proportion is no optimized with the valve grounding open, causing a diminish in engine output.
How to download the EGR Valve
The EGR valve is in different locations because that the 5.7 and 3.7/4.7 engines. Top top the 5.7, you will discover it tucked in between the air box and also alternator. Top top the 3.7/4.7, girlfriend will discover it on the back of the engine near the firewall. This one is significantly harder to reach 보다 the 5.7"s. There room a complete of 4 bolts: one is on the connector attached come the valve.
Materials Needed1/4" ratchet3/8" ratchet1/4" 8mm socket10mm deep socketSwivel adapterFlat head screwdriver3" extension10mm wrenchShop ragBrake cleanerEmery cloth or good grit sanpaperPenetrating oilRubber glovesSafety glasses
Step 1 – remove the resonator box (4.7/3.7 engines only)
The 4.7/3.7"s EGR valve is situated on the behind of the driver"s side cylinder head, do it very hard to adjust without removed the resonator box.
Refer to action 1 that the related Article: exactly how to change Ignition Coils and also Spark Plugs for this procedure.Step 2 – eliminate the EGR valve
Begin removing the EGR valve native the 5.7 engine through locating it in between the wait box and alternator. In ~ the peak of the valve you will see a black electrical connector plug through a red tab. Push the red tab come the appropriate to unlock it, and also then to express the flexible tab top top the connector plug when pulling it away from the valve.
Now, eliminate the exhaust water tap from the EGR valve. There are two bolts v 8mm heads. If her hose shows up rusted, soaking the bolts v a penetrating lubricant will minimize the chance of a bolt breaking.
Lastly, remove the 2 bolts v 10mm heads holding the valve come the intake manifold. It"s best to use a deep socket come reach these bolts.
The only distinction in removal because that the 4.7/3.7 EGR valve is that is location. Disconnect the electrical connector the same method as the 5.7"s. When your are prepared to remove the exhaust water tap from the valve, usage a 1/4" 8mm socket v a swivel and also a 3" extension. You will not have the ability to see the 2 bolts with 10mm top holding the valve come the cylinder head, and also will must remove castle by feel. The EGR valve will certainly then be ready for removal.
This uses to the encounters of the exhaust hose and intake manifold/cylinder head. Usage a well grit sandpaper or emery cloth in addition to brake cleaner and a rag come remove all of the carbon/gasket material from this surfaces.
Slide the 2 bolts v 10mm heads with the valve, and then ar the gasket end the bolts. Now guide the valve down into position against the cylinder head/intake manifold. Subject the bolts by hand first, and then tighten them down until snug. Place the new exhaust water tap gasket ~ above the surface of the exhaust hose, and slide the two bolts with 8mm heads into the hose. Install the hose to the valve through hand first, and also then tighten the bolts till snug. Push the electric plug back into the EGR valve plug, and lock the plug v the red tab.
For the 4.7/3.7, girlfriend will have to re-install the resonator box.
To clear the inspect engine light, disconnect the an adverse battery cable through a 10mm wrench for five minutes.
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