Tip & How-To about Dodge Caravan

How to replace your egr valve and how to tell the difference

Here is an easier way to replace your exhaust gas recirculation valve on a non flex fuel 2005 3.3L. First off, the egr valve is located right above your alternator, it has 4 bolts in it, a pipe which goes from the top of the egr to the intake, and a plug in style wiring terminal. You'll need a 3/8 drive ratchet with a 9mm and 10mm socket, a 3/8 to 1/4 adapter, a 2 1/2 inch and 12 inch 3/8 drive socket extension, a small hammer, and a small 10mm open ended wrench to perform this repair. Also be sure you have the correct egr, there are 2 call the dealer with the last 9 digits of your vin to verify the one you need, I opted for the mopar replacement (100 after tax) parts store's have slightly cheaper aftermarket replacements. First, disconnect your wiring to the transducer, there is a plastic retainer (which locks the plug in place) you'll need to push it in to unlock it then press the back of the plug down and pull it out . Next remove the two 5/16 or 9mm bolts from the flange at the top of the egr where the recircirculation line goes back to the intake/throttle body. There are two 10mm bolts which hold the egr to the motor, the first is easy to remove, the second is blocked by the alternator. here is where some people have problems trying to figure out how to get to it. Don't remove the alternator, your serpentine belt, or anything else. I used a 12 inch 3/8 socket extension and a small hammer to tap the top flange (of the first two bolts you should have removed) towards the firewall as far back as you can get it. Now that you have a little bit of room to work with you can use a small 10mm wrench to remove the bolt. It is still a tight squeeze but you can do it. Once the old egr has been removed inspect the mating surface on the block where you will install the new one and make sure you have a clean surface for the new gasket. You'll need to obviously install the last bolt you removed first in the reinstallation process, then install the other bolts. You can also reuse the gasket from the recirc pipe if it is not damaged. Plug the wire in and lock it back with the retainer clip. Make sure all your tools have been picked up from the engine compartment and start your vehicle. Your engine light should go out now provided that was the only fault that triggered it. Good luck

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location of egr valve on 2003 chevy silverado


Hi there:
Here is a picture showing the EGR valve on the 4.8 Litre V8. The numbers below go with the picture. The arrow points to the front of the truck.

(1) Fuel Injector 2 Connector
(2) Throttle Actuator Control (TAC) Motor Connector
(3) Throttle Actuator Control (TAC) Motor
(4) Exhaust Gas Recirculation (EGR) Valve Connector
(5) Exhaust Gas Recirculation (EGR) Valve
(6) Fuel Injector 6
(7) Ignition Coil 2


9_14_2012_3_34_36_am.jpg
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Sep 14, 2012 | 1989 Chevrolet Camaro

1 Answer

Auto part store says there is no egr valve on 08 dodge ram 1500 4.7. True?


25 - Emissions Control/Exhaust Gas Recirculation, Gas/VALVE, Exhaust Gas Recirculation (EGR), 4.7L/Removal REMOVAL collapse.gif Labor Operations: Click to display a list of Labor Operations associated with this procedure

2431021.jpg The electronic EGR valve and solenoid assembly is attached to the rear of the left cylinder head. An exhaust gas routing tube connects the EGR valve to the intake manifold.
1. Use a diagnostic scan tool to record any Diagnostic Trouble Codes (DTC). 2. Remove the throttle body resonator. 3. Perform the fuel system pressure release procedure (Refer to 14 - Fuel System/Fuel Delivery - Standard Procedure) 4. Disconnect and isolate the negative battery cable.


2430847.jpg 5. Disconnect the power brake booster vacuum hose (1) and the vapor canister purge hose (2) at the intake manifold.


2430720.jpg 6. Disconnect the EGR valve solenoid electrical connector (1).


2430801.jpg 7. Remove the EGR valve assembly retaining bolts (1). 8. Remove the EGR valve and the EGR routing tube from the engine as an assembly. 9. Remove and discard the metal gasket located between the cylinder head and the EGR valve assembly.


2433378.jpg 10. Remove the EGR valve routing tube retaining bolts (1) at the EGR valve assembly 11. Remove the EGR valve routing tube and discard the gasket.

Feb 14, 2012 | 2008 Dodge Ram 1500 2WD

1 Answer

what does code p042e mean


P-042e-Exhaust Gas Recirculation Control Stuck Open
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P042E-EXHAUST GAS RECIRCULATION CONTROL STUCK OPEN

During regeneration of the aftertreatment Diesel Particulate Filter the Exhaust Gas Recirculation (EGR) valve is commanded to be in the closed position. If the EGR valve is not closed then a temperature rise will occur at the EGR valve orifice. The Engine Control Module (ECM) monitors the orifice temperature of the EGR valve and will set the fault if the temperature is above a calibrated threshold.

Unless the wiring has been tampered with going to the egr valve, replacement of the egr valve is the most likely scenario that will repair this for you.

Jul 13, 2010 | 2007 Dodge Ram Truck

1 Answer

the computer is not allowing the egr solenoid to activate. vehicle sometimes run erratic and idles roughly. Code 41 comes up in addition to the codes 84 and 33 (related to egr.)


change your egr valve on the car and the problem should be rectified.
the egr valve exhaust gas recirculation valve send exhaust gase back to the inlet manifold to keep the air fuel fuel mixture at the right temp and the exhaust manifold from over pressurising.
if this fail seizes shut it stop the recirculation from happening yuo cant just clean them though they have to be replaced

May 27, 2010 | Ford Ranger Cars & Trucks

1 Answer

1995 mercury villager check engine code p1200 injector open


P0400 = EGR Flow
P0325 = knock sensor (Do not ever change a knock sensor, they don't affect anything and cost $600 to replace for absolutely no gain)
P1200 = I can't find this one. I think it's injector flow
report back on what you find.
Egr flow may be plugged egr passages or a bad solenoid.
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1996 PCED OBDII-Villager SECTION 1B: Description and Operation
Exhaust Gas Recirculation System
Exhaust Gas Recirculation (EGR) System Operation The exhaust gas recirculation (EGR) system (Figure 1 below) recirculates a portion of the exhaust gases into the intake manifold under average vehicle driving conditions to reduce combustion temperatures and exhaust gas NOx content. The amount of exhaust gas recirculated varies according to operating conditions and will be cut completely under:
  • Engine starting condition
  • Low engine coolant temperature condition
  • Excessively high engine coolant temperature condition
  • Engine idling condition
  • High engine speed condition
  • Mass air flow sensor failure
The exhaust gas recirculation (EGR) system on the Villager uses the exhaust gas recirculation/evaporative emission (EGR/EVAP) control solenoid valve to provide vacuum to both the EGR valve and the EVAP canister when commanded by the PCM. If the exhaust backpressure is sufficient to close the EGR backpressure transducer valve, vacuum is sent to the EGR valve and allows EGR gas to flow into the intake manifold. If the exhaust backpressure is not sufficient, the EGR backpressure transducer will remain open and allow vacuum from the EGR/EVAP control solenoid to vent to the atmosphere.
The EGR system monitor, for OBD II regulations, uses an EGR temperature sensor to monitor the EGR system. The EGR temperature sensor is a thermister located in the EGR passageway. When hot exhaust gas is recirculated into the engine, the temperature at the EGR passageway increases. This increase is sensed by the EGR temperature sensor and a signal is sent to the PCM to indicate EGR flow. If the EGR temperature sensor does not detect EGR flow when commanded by the PCM after two consecutive drive cycles, the malfunction indicator lamp (MIL) will be illuminated and a diagnostic trouble code (DTC) will be stored. The MIL will be turned off after three consecutive drive cycles are completed with no malfunctions detected. The DTC will remain stored in the PCM memory until 80 drive cycles have been completed without the same malfunction detected in the system.
Figure 1: Exhaust Gas Recirculation (EGR) System Diagram Item Number Description 1 — EGR/EVAP Control Solenoid 2 — Air Cleaner Housing 3 — Throttle Valve 4 — EGR Temperature Sensor 5 — EGR Valve 6 — EGR Backpressure Transducer 7 — EVAP Canister
Exhaust Gas Recirculation (EGR) Backpressure Transducer Valve The exhaust gas recirculation (EGR) backpressure transducer valve is used to control EGR. The EGR valve is operated by ported vacuum, but the ported vacuum will normally be vented off at the EGR backpressure transducer valve. As rpm increases, exhaust pressure increases and pushes on the diaphragm in the EGR backpressure transducer valve and closes the vacuum vent.
Figure 2: EGR Backpressure Transducer Value
Item Number Description 1 — Throttle Valve 2 — Vacuum Port 3 9D475 EGR Valve 4 9F452 EGR Backpressure Transducer Valve 5 — EVAP Canister 6 — EGR/EVAP Control Solenoid 7 — Vent
EGR/EVAP Control Solenoid The exhaust gas recirculation/evaporative emission (EGR/EVAP) control solenoid (Figure 3) is controlled by the powertrain control module (PCM). The EGR/EVAP control solenoid controls vacuum to both the exhaust gas recirculation (EGR) valve and to the evaporative (EVAP) emission canister. When the EGR/EVAP control solenoid is off (12 V signal from the PCM) vacuum is supplied to both the EGR valve and to the EVAP canister. When the EGR/EVAP control solenoid is on (ground supplied by PCM) vacuum is vented to the atmosphere keeping the EGR valve closed and no vacuum to the EVAP canister. The PCM will command the EGR/EVAP control solenoid on at:
  • Engine starting condition
  • Low engine coolant temperature condition
  • Excessively high engine coolant temperature condition
  • Engine idling condition
  • High engine speed condition
  • Mass air flow sensor failure
Figure 3: Exhaust Gas Recirculation/Evaporative Emission (EGR/EVAP) Control Solenoid
Exhaust Gas Recirculation (EGR) Temperature Sensor
The exhaust gas recirculation (EGR) temperature sensor (Figure 4) is a thermister type sensor that monitors the temperature of the exhaust in the EGR passageway. As the EGR flow increases, the temperature increases. This process creates a change in the resistance of the sensor, which decreases as the temperature increases. The signal is sent to the powertrain control module (PCM) to indicate that the EGR system is working properly. If the EGR temperature sensor does not change resistance as the PCM expects on two consecutive drives, the malfunction indicator lamp (MIL) will be illuminated and a diagnostic trouble code (DTC) will be stored.
Figure 4: EGR Temperature Sensor Exhaust Gas Recirculation (EGR) Valve
The exhaust gas recirculation (EGR) valve (Figure 5) recirculates portions of the exhaust gas back into the intake manifold to reduce the amount of the NOx released during combustion and to reduce combustion temperature. The amount of exhaust gases that are released into the engine is proportional to the load on the engine.
Figure 5: EGR Valve

Mar 20, 2009 | 1995 Mercury Villager

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