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How do I check the egr soleniod. And where is it?

What is the easiest way to check this? and are there other components I could check. Valve already replaced.

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2 Answers

1994 Mercury Sable 3.8L


The car's wiring can be tested in the normal fashion (see our article on Automotive Circuit Testing here), and all vacuum lines can be checked easily for cracks, leaks and correct routing. the easiest way to test the 3 remaining components: the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor). So if you have a scan tool hook it up and let's go, if not read on and we'll get around that too!

Oct 22, 2008 | 1994 Mercury Sable

1 Answer

I have a 1998 ford escort with a check engine light on and can't get it off


Here is a list of possible causes. Some things you have already done.

EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- EGR volume control valve stuck closed
- Faulty EGR Pressure sensor
- Faulty EGR temperature sensor and circuit
- Faulty EGR Valve
- EGR passage clogged
- Exhaust gas leaks
Read more: http://engine-codes.com/p0401_ford.html#ixzz28fATCih2

Oct 07, 2012 | 1998 Ford Escort

1 Answer

Hw do u know wat to do wen the code p0401 pop up


Hi there,

Well done on obtainging this code.

Code P0401 = Insufficient EGR circuit Flow

The EGR circuit consists of i) EGR Valve; ii) actuator solenoid; iii) differential pressure sensor. These components work together to deliver the correct amount of recirculation, depending on engine temperature, load, etc. So, when code P0401 is triggered, this means the computer has detected an insufficient amount of EGR somewhere within this circuit.

So, with this said, the possible causes are:
  • Differential Pressure (DPFE) Sensor is faulty
  • A blockage in the EGR Tube, possible caused by Carbon buildup
  • Faulty EGR Valve
  • Lack of vaccuum to the EGR valve (i.e. valve cannot open)
Note: replacing the EGR valve should only be done, after checking the other components are ok and confirming there is proper vaccuum present.


Hope this helps.....





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Sep 04, 2011 | 1998 Ford Taurus

2 Answers

Diagnostic code "P0401". I have already replaced the EGR and had a mechanic diagnose it saying that it needs "EGR VAC S/W VALVE BACK PSI" and "TRANSDUCER". He quoted me $486.75 to do the repair. He claimed...


This code is usually caused by blockage and can often be cleared just by cleaning out the passages. Unfortunately I cannot find the procedures for you car. If you want to try cleaning, perhaps you can get a repair manual. The code can also be caused by the EGR valve or solenoid, but these can be tested for proper operation. Did they test them? Which part did you already replace? I don't know why they quoted the sensor, as the sensor is giving a reading, albeit a low flow reading. There is an aftermaket valve for $175, but I could not find a price on the vac solenoid.

Sep 28, 2010 | 1995 Lexus ES 300

2 Answers

PO402 trouble code....how is this repaired


Exhaust gas recirculation flow excessive. First things to check is your vacuum hoses to egr position sensor (Dpfe sensor) Egr solenoid & egr valve. If they are off, melted or sucked in they need to be replaced. Usually a specific code will be set for that but not always. Of the three the dpfe sensor also known as egr position sensor is the most common & easiest to replace. Next in order is the egr solenoid. Lastly if it comes to changing egr valve make sure to clean all carbon build up in cavity that egr mounts to. They commonly plug up.

Sep 24, 2010 | 2002 Ford Explorer Sport

2 Answers

Where is EGR Valve located on a 2006 dodge charger 3.5L pic would be helpful


to find the egr valve you will have to remove the purge soleniod from the bracket.

1. EGR tube
2. EGR Valve



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Oct 04, 2009 | 2006 Dodge Charger

1 Answer

How do you replace the egr valve in a 1997 chrysler concorde lx


Chrysler Concorde 1993-1997 3.5L MFI 6cyl
Exhaust Gas Recirculation System
Operation

This system reduces the amount of oxides of nitrogen (NO x ) in the exhaust by allowing a predetermined amount of exhaust gases to recirculate and dilute the incoming fuel/air mixture. The diluted air/fuel mixture reduces peak flame temperature during combustion, which in turn inhibits the production of Nitrogen oxides. The principal components of the system are:
- EGR tube (connects a passage in the intake manifold to the exhaust manifold)
- EGR valve
- Electronic EGR Transducer
- Vacuum hoses


Component and System Testing
  1. Check the condition of all of the EGR system hoses and tubes for leaks, hardening or kinks on the rubber hoses. Repair and correct these conditions before proceeding any testing.
  2. Be sure that the hoses at both of the EGR valve and EGR valve control are connected to the proper fittings.
  3. Be sure the electrical connector is firmly attached at the valve control.
  4. To check the EGR system operation, connect the DRB III scan tool or equivalent to the 16-way data link connector. The data link connector is located on the lower edge of the instrument panel near the steering column. Follow the scan tool instructions.
  5. After checking the system with the DRB III scan tool, proceed to the EGR valve leak and control tests, then repair as necessary.

Removal & Installation
EGR Valve and Transducer

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EGR valve and transducer assembly-3.5 engine



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The EGR valve attaches to the back of the cylinder head-3.5L engine


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Loosen, but do not remove, the EGR tube to intake manifold screws

The EGR valve attaches to the rear of the right cylinder head.
  1. Remove the vacuum tube from the electric EGR transducer solenoid. Inspect the vacuum lines for cracking, poor seal due to hardness, or other problems. Replace with new hoses if necessary.
  2. Remove the electrical connector from the solenoid.
  3. Slide the transducer up and out of the mounting bracket.
  4. Loosen, but do not remove, the EGR tube to the intake manifold screws.
  5. Remove the EGR tube lower screws at the valve.
  6. Remove the EGR valve and transducer.
  7. Clean both gasket surfaces and check for any signs of leakage or cracks. Replace the components if any such damage is found or if the valve fails the tests.

To install:
  1. Loosely install the EGR valve and a new gasket onto the cylinder head.
  2. Using a new gasket, attach the EGR tube to the valve and tighten the screws to 95 inch lbs. (11 Nm).
  3. Tighten the EGR tube to the intake manifold plenum screws to 16 ft. lbs. (22 Nm).
  4. Tighten the EGR valve to the cylinder head screws to 16 ft. lbs. (22 Nm).
  5. Reconnect the transducer solenoid to the vacuum fitting on the manifold.
  6. Slide the transducer into the bracket.
  7. Reconnect the vacuum lines and electrical wires to the EGR transducer.
continue...

Sep 04, 2009 | 1997 Chrysler Concorde

1 Answer

EGR Sensor/valve replacement


The EGR is a three part series; the valve, soleniod, and sensor. They are fairly easy to change, a few hours with a buddy. They are located on the top back, center of the engine. Take a look you will see something that is small and cylinder like with a wire connected to the top, that is the vavle. I would replace all three at once as they are all together and you have to take of one to take of the others. The total price will cost you about $250 in parts. However, you must know your engine type on the Sable/Tarus as the parts are different per engine.

Apr 20, 2009 | 2002 Mercury Sable

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