Question about 1994 Ford Mustang

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How do you replace the EGR Tube on a 1994 mustang V6? It is broken at the "T" where the Pressure feedback sensor connects and I need to remove it to install a new one.

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Sorry for people that give answers like that. I don't even know why they waste there time if there not going to help someone. I'm in the process of doing this right now also for my 1994 Mustang 3.8L. I'm going to start off and say its a PITA to change and if you have big hands then to make it easier. You can try this. One its to remove the Transmission dip stick. I couldn't get a tool up there to remove it but you might have better luck. with that removed you need to get a wrench or a Crows foot maybe both. the size you need from the exhaust connection nut is ( 1 1/16 ) its a pain to to i had to use crows foot and extensions. But to put it back on was even worse so I suggest to just to drop you exhaust but leave the manifolds on. You will get a better reach and. it might help if your remove the top nut before you install the bottom nut back on. that should help it line up better. this is the time to also inspect your hoses.you can get new ones of for $5.00 for the pair. They are special hoses due to the extreme heat of the exhaust gasses. close to 800 F. I also before removing it tried JB weld and muffler repair to seal the hole. It was way to hot for them and melted them off or turned them into brittle flakes. you can find a new EGR tube sometimes on EBay for my year 94-96 3.8L work and 4.6L, but the 5.0 are completely different. I got lucky to find the one I did. But there are companies that will sell you there used ones for $146.00 and up. I got lucky and got mine for $45.00. Call local junkyards in your area you might get lucky. Mine did have a little rust on it. so i used white vinegar. I don't think it really worked well. But Ended up using an SOS pad and that cleaned it up perfectly. I wish you the best on tackling this job but it can be done. Just don't rush it or force it or you might brake something else or the used part.
How do you replace the EGR Tube on a 1994 mustang - 8_2_2012_6_31_39_am.jpg

Posted on Aug 02, 2012

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Take it out, put a new one in. easy as that. word.

Posted on Sep 08, 2009

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1 Answer

What causes insuficent egr flow?


Probably partially clogged tube, or sludge build up in intake manifold. Must take apart and look in these areas. I assume this is a high mileage vehicle.

Aug 13, 2014 | 1994 Ford Ranger Supercab

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Where to locate my DPFE sensor on suzuki vitara


2000 Vitara. what engine.
Delta/Differential Pressure Feedback EGR Sensor
1.6L 16V I4 GAS
2.0L J20A I4 GAS
2.5L H25A V6 GAS
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which engine? that be 1st,
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its top rear center. of engine.
part 18 , seen on page 28 here
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its just a map/baro sensor used to test EGR.
if the tube is clean, it rarely fails.
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of P04xx DTC errrors (got those>)

Feb 18, 2014 | 2000 Suzuki Grand Vitara

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1401 egr code


P1401 FORD - DPFE Sensor Circuit High
Faulty Differential Pressure Feedback Electronic (DPFE) sensor
- Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
- Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection. This is not likely the EGR but the EGR pressure sensing valve.

Oct 19, 2012 | Cars & Trucks

1 Answer

What is code 0401 insufficient flow to EGR valve


A code P0401 likely means one ormore of the following has happened:
  • The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
  • There is a blockage in the EGR (tube), most likely carbon buildup
  • The EGR valve is faulty
  • The EGR valve may not be opening due to a lack of vacuum
PossibleSolutionsTo fix this code, it is quite commonfor people to just replace the EGR valve only to have the OBD code return. TheEGR valve is not always the culprit.
  • Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticeable difference in RPM's with the EGR open
  • Clean out the EGR valve and/or tubing to remove deposits
  • Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
  • Replace the DPFE sensor (with a good quality / OEM one)
  • Replace the EGR valve

Mar 07, 2012 | 1994 Ford Taurus

2 Answers

Need to find and replace the DPFE-15 sensor. Dealership diagnosed when service engine light came on and saaid this is what needed replacing. Problem is I do not know where to find it on the engine.


Exhaust Gas Recirculation (EGR) System The exhaust gas recirculation (EGR) system is designed to:
  • reintroduce exhaust gas into the combustion cycle.
  • lower combustion temperatures.
  • reduce the formation of oxides or nitrogen (NOX).
The amount of exhaust gas reintroduced and the timing of the cycle varies by calibration. Timing and volume are controlled by the following:
  • engine rpm
  • engine vacuum
  • exhaust system back pressure
  • engine coolant temperature
  • air charge temperature
  • throttle position
The EGR valve (EGR valve) (9D475) is vacuum-actuated. The vacuum hose routing diagram is shown on the Vehicle Emission Control Information (VECI) decal. The EGR system is a differential pressure feedback EGR Sensor system. Differential pressure feedback EGR Sensor is a subsonic closed loop EGR system. The differential pressure feedback EGR system:
  • monitors EGR flow rate by the pressure drop across the metering orifice located in the EGR tube.
  • uses a differential pressure feedback EGR sensor as the feedback device.
  • uses the EGR valve only as a pressure regulator, rather than a flow metering device.
  • controlled pressure is varied by the valve movement using vacuum output of the EGR vacuum regulator solenoid (9J459).
  • allows for a more accurate assessment of EGR flow requirements.


Differential Pressure Feedback EGR Flow Diagram


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Differential Pressure Feedback EGR Sensor Removal
  1. Disconnect engine control sensor wiring (12A581) from Differential Pressure Feedback EGR Sensor.
  1. Disconnect Differential Pressure Feedback EGR Sensor hoses from EGR valve to exhaust manifold tube (9D477).
  1. Remove retaining nuts or bolts (depending upon application) and EGR Differential Pressure Feedback transducer.
Installation
  1. Follow removal procedure in reverse order.
  1. Tighten retaining nuts or bolts (depending upon application) to 5-7 Nm (45-61 lb-in).


    Differential Pressure Feedback EGR Sensor, 3.0L (2V) Engine


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    Differential Pressure Feedback EGR Sensor, 3.0L (4V) Engine


    a23840a.gif


    Item Part Number Description 1 6049 RH Cylinder Head 2 - Differential Pressure Feedback EGR Sensor 3 - Nut (2 Req'd) 4 - Stud Bolt 5 - Bolt (2 Req'd) 6 - Differential Pressure Feedback EGR Sensor Bracket A - Tighten to 5-7 Nm (45-61 Lb-In) B - Tighten to 8-12 Nm (71-106 Lb-In)

    Engine Emission Control Component Location-3.4L SHO Engine


    a25013a.gif


    Item Part Number Description 1 95607-05200 Nut 2 - EGR Sensor Hose 3 - EGR Sensor Hose 4 95027-08016 Bolt 5 - Differential Pressure Feedback EGR Sensor 6 9J433 Differential Pressure Feedback EGR Sensor Mounting Bracket 7 9D474 EGR Solenoid Vacuum Valve (2 Req'd) 8 A4670 Vacuum Tube Assembly 9 9424 Intake Manifold 10 9J459 EGR Vacuum Regulator Solenoid A - Tighten to 5-7 Nm (45-61 Lb-In)
Hope this helps

Aug 14, 2011 | 1999 Ford Taurus

2 Answers

How do you replace the intake manifold gasket on a 2001 ford E-250 5.4L??????????????? thanks


We cannot find pics about this, but I hope that this description helpfull.

5.4L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Disconnect the battery ground cable.
  3. Remove the interior engine cover.
  4. Disconnect the fuel hose spring lock couplings.
  5. Drain the cooling system.
  6. Position the engine air cleaner (ACL).
  7. Disconnect the MAF sensor electrical connector and remove the ACL.
  8. Disconnect the two hoses.
  9. Loosen the clamp and remove the air cleaner outlet pipe.
  10. Remove the accelerator cable snow shield.
  11. Disconnect the accelerator cable.
  12. Disconnect the speed control actuator cable.
  13. Remove the throttle return spring.
  14. Compress and slide the hose clamp and disconnect the upper radiator hose.
  15. Disconnect the coolant hose.
  16. Disconnect the coolant hose.
  17. Disconnect the throttle position (TP) sensor.
  18. Disconnect the differential pressure feedback exhaust gas recirculation (EGR) system.
  19. Remove the differential pressure feedback EGR system bracket.
  20. Remove the bolt and the bracket.
  21. Remove the bolts and the alternator upper support bracket.
  22. Remove the bolt retaining the transmission fluid filler tube support bracket.
  23. Remove the bolts and position the accelerator cable bracket and cables aside.
  24. If equipped, disconnect the auxiliary heater hoses and position aside.
  25. Disconnect and remove the idle air control (IAC) valve fresh air hose.
  26. Disconnect the evaporative emission canister purge valve hose and vacuum hose.
  27. Remove the two evaporative emission canister purge valve nuts and position the valve aside.
  28. Disconnect the fuel pressure sensor vacuum hose and the electrical connector.
  29. Disconnect the EGR vacuum regulator solenoid connections.
  30. Disconnect the EGR valve vacuum hose.
  31. Disconnect the IAC valve electrical connector.
  32. Disconnect the brake booster and main engine vacuum harness and position aside.
  33. Disconnect the differential pressure feedback EGR sensor hoses from the EGR valve.
  34. Remove the exhaust manifold-to-EGR valve tube.
  35. Remove the four bolts, and the throttle body and adapter as an assembly. Discard the throttle body adapter gasket.
  36. Disconnect and remove the positive crankcase ventilation hose.
  37. Disconnect the eight ignition coil electrical connectors.
  38. Disconnect the eight fuel injector electrical connectors.
  39. Remove the eight bolts and the eight ignition coils.
  40. Remove the bolts, the thermostat housing and the thermostat. Disconnect the O-ring seal.
  41. Remove the nine bolts retaining the intake manifold.
  42. Remove the intake manifold. Discard the intake manifold gaskets.
  43. Inspect the throttle body, the intake manifold, and their sealing surfaces for damage.
continue...

Jan 19, 2011 | 2002 Ford E250

1 Answer

2002 Mercury cugar P0401 and P1401


DTC P0401 - Insufficient EGR Flow

EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Causes: A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum

Possible Solutions: In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve


DTC P1401 - Differential Pressure Feedback Electronic Sensor circuit High Voltage

I think that you need a new DPFE; first check it, you could also have something restricted. There are ports in the throttle body that can cause this as well. Check THIS LINK.

Hope helps.

Nov 04, 2010 | Mercury Cougar Cars & Trucks

1 Answer

SHOWING CODE P1407 ON 1995 FORD MUSTANG. WHAT CAUSES THAT CODE?3.8 V6


P1407 EGR No Flow Detected
You could have a blocked or dirty EGR valve or tube from the manifold or a non functioning EGR sensor.

May 28, 2010 | 1995 Ford Mustang

1 Answer

Im putting in the boss performance module


please rate as problem solved if this is what you need.



Section 03-14: Engine Controls, Electronic 1994 Mustang. Workshop Manual
REMOVAL AND INSTALLATION Intake Air Temperature (IAT) Sensor Removal and Installation
  1. Disconnect battery ground cable (14301) .
  1. Disconnect engine control sensor wiring (12A581) from intake air temperature sensor (IAT sensor) (12A697) .
  1. Remove intake air temperature sensor from air cleaner outlet tube (9B659). (This is the tube that goes from the air cleaner to the engine.)
  1. To install, reverse Removal procedure. Tighten intake air temperature sensor securely.
--------------------------------------------------------------------------

Jun 02, 2009 | 1994 Ford Mustang

1 Answer

1994 ford mustangv6 3.8


Check the EGR tubes for carbon build up. It's not the fact that the EGR valve keeps going bad, the reason that there it thinks it's malfunctioning is the tubes itself will not allow enough flow. Remove them and clean them out the best you can.

Jun 11, 2008 | 1994 Ford Mustang

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