1995 subaru legacy vacuum port to egr valve solenoid stopped up,how to clean

have a look at the fuel pump( they loose pump pressure or sees, fuel pump relay, and the fuel pump wiring connector under the rear seat this connector starts to melt sometimes due to bad connection of the pins inside.

When you say you cleaned the ports which ports did you clean.? These engines are very sensitive and do build up lots of carbon on the small egr vacuum ports. The focus here is usually the vacuum port inside the intake manifold that is behind the throttle body. Take the throttle body off and look inside you will see usually a big deposit of carbon where the port is to be. That needs cleaned. You also need to check the vacuum line that runs from the intake manifold over to the right strut tower. This goes to your boost sensor solenoid. Make sure that that line has good engine vacuum. If it does not clean that port as well. If that line is clogged I have seen the carbon get so bad that it clogs the boost sensor solenoid and the vacuum line after the solenoid. All of these ports need cleaned not just one.

Fuel filter is probably located in fuel tank. Although a few older American cars had one located on the frame, under the car.

Could be a few things, if you pull the plug wires off the coil and there a little bit corroded and light green in color I would replace your coil. The easiest check is to check and see if the EGR valve and vacuum solenoid are working properly. Locate the EGR valve, It's about 6 to 8 inches from the throttle body towards the drivers side. It looks like a small stepped flying saucer about 3 inches in diameter with a vacuum line going to it. Get something like a golf "T" to fit into and plug the vacuum line once you have disconnected it. Drive the car to see if there is any improvement in driveability. If not, then there are more things to look at but those are the most common. I hope this info helps.

Hello, There are sensors which monitor the EGR flow. Your problem can be one of these following things: the EGR valve is not opening, the flow to the EGR is clogged, or the Vacuum from the electric Solenoids is not reaching the EGR. This would mean a line has a hole in it or the Solenoid is bad.

Sometimes, when the EGR has cooled, you can detach the Vacuum line to it and put your fingers on the diaphram and pull up on the Valve. If you hear air move through the vacuum stem where the line was attached, and can trap the stem with one of your fingers, you can freeze the valve inside its case. This would mean the valve is holding pressure. You can also apply Vacuum from a Vacuum pump if you have one, and do this same test.

Once you know the condition of the EGR valve you can test the other things. Check any small metal tubes running through the EGR for holes. The Solenoids can be tested for continuity with an Ohmmeter. You can take the Solenoids and the EGR off it you want, and go to Autozone, Oreillys, or Advance for free testing. If everything checks out okay, then you will probably need to pull the Intake manifold and clean the EGR port inside. You can get your gaskets when they are testing your parts.

Some year models of the V-6 had problems with a 2 piece intake manifold which had a gasket sealing the upper and lower half. If you remove the Intake, now would be a good time to install a new gasket.

I hope my solution is very helpful to you in finding the problem.

1. Detach the vacuum hose from the EGR valve.
   
2. Remove the two nuts which secure the EGR valve to the intake manifold assembly.
   
3. Remove the valve and gasket from the manifold.
   
4. Clean all gasket material from both mating surfaces.
   
5. Check the vacuum hose for deterioration and replace as necessary.
   

To install:

1. Inspect the exhaust gas passages in the intake manifold and clean as necessary. Clean the EGR valve assembly as necessary.
   
2. Using a new gasket, install the EGR valve.
   
3. Tighten the EGR valve securing nuts to 17-19 ft. lbs. (22-25 Nm).
   
4. Install the hose on the EGR valve.

when a code is set for something it doesnt mean replace it, Egr system has an evr solonid that controlls the egr, There is rubber hoses that run between them some are plastic and break, Id have the hose checked and if its good replace evr solenoid

Hello, If you know what an EGR valve is and where it is on your car you will need to try this. The EGR valve is on the back of the intake manifold on the drivers side as long as it's left hand drive. It looks like a side ways flying saucer with a small black rubber vacuum line going to it. Pull that little line off and put a small bolt or golf "T" in it to keep from having a vacuum leak. Then give the bottom the the valve (not the saucer part) a couple of hard taps with a hammer and then go drive it to see if it drives normal now. If it does you will need an EGR vacuum control solenoid and replacing the EGR valve itself is also recommended. I hope this info helps...(subyguru)...

Usually random engine decells are caused by not changing the fuel filter and/or EGR concerns. The easiest way to rule out the EGR is to pull off the vacuum line going to the EGR housing and plug it with a small bolt or ideally a golf ball "T". The EGR is designed to allow exhaust gasses to be recirculated back into the intake system usually during freeway cruising and long uphill pulls to prevent engine over temp in the cylinders. The exhaust gasses slightly hinder the fuel combustion from burning at it's full heat intensity. Once you have plugged the EGR tube you will just need to drive the vehicle to see if any thing has changed. If nothing changes, I would start looking at ignition concerns for ex: spark plugs, plug wires, coil, coil connector for loose pins or brittle and/or broken wires. I hope this info helps...(subytech1)...

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