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1995 ford taurus sho 3.2 obd code332 replaced dpfe/evr/ egr valve .still getting code 332 egr valve not opening. any help car stalls under decel of throtle

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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dustyboner
  • 331 Answers

SOURCE: I'm getting an engine check light, the OBD-II is P0401.

I would check the front o2 sensors because usually the EGR flow is detected by:

The detect operation of the system, the solenoid is disabled and the o2 compensation control is monitored. If the EGR system is operating properly, turning it off shifts the air/fuel ratio in the lean direction. o2 sensor data should indicate an increase in oxygen in the exhaust gases and cause the short term control to shift rich. The amount of the shift indirectly monitors the operation of the system.

Posted on Oct 13, 2008

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ewashmidas
  • 362 Answers

SOURCE: 2002 ford focus p0401

Here is a list of possible causes for a PO401, hope this helps.

  • DPFE sensor signal circuit is shorted to ground
  • DPFE sensor VREF circuit is open between sensor and PCM
  • DPFE sensor downstream hose off or plugged
  • DPFE sensor hoses both off, loose or damaged
  • DPFE sensor hoses connected wrong (reversed)
  • EGR orifice tube is damaged or restricted
  • PCM has failed

Posted on Feb 10, 2009

  • 114 Answers

SOURCE: 1991 ford f250 5.8l VIN H

In all the technical data I have access to Snap-on, Mac, AllDATA and most service manuals all tell you to start with a wiggle test and clean all grounds.
Wiggle test means wiggle the wires and connectors while te engine is running and see if there is a change in performance. I suggest unplugging the connectors one by one and doing a visual inspection on them, look for green corrosion rust oxydized connections etc, add a little bit of di-electric grease and plug it back in, for the grounds that are bolted on remove these but be careful not to break off the rusty ones then use 400 grit sandpaper and shine up the mating surfaces add some di-electric grease and re install. Before you start to clean the connectors and grounds remove the neg off the battery, it will reset the check engine light if left unplugged for 30 mins

Posted on Mar 23, 2009

  • 33 Answers

SOURCE: code332 insuficant egr presure

yes the pcm is the main comp.

Posted on May 05, 2009

  • 5546 Answers

SOURCE: 1991 Lincoln Town Car, 4.6L - Check Engine error

What you will find under the airhorn is a $10 gasket covering a half circle groove with a straight line in the center. When this is clean everything will work. Remember to purge the error codes.

I understand that the old intake manifolds were aluminum. Ford changed the intakes to plastic after at least the 1994 models. Could be 95 on. The carbon deposits really stick to aluminum.

After spending $450 on parts and taking the car back 6 times for a Error 401 the shop admitted it could not fix all the cars with that code.

I was lucky enough to meet a Cop-shop mechanic who worked on all the police cars and city vehicles. I asked him about my car and he told me about the 8 bolts and the $10 gasket and to clean the port under the airhorn. Did it once and it stayed fixed. Had a 2002 and another 1999 did the same thing even with a plastic manifold on the 2002.

Had a code 401 come up in your article I would have told you about my experiences. Glad you found it. Basically the EEC knows it is short on vacuum but blames the electrical parts instead of carbon problems.

Posted on Sep 03, 2009

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1 Answer

Replace P1401 DPFE Sensor circuit


The P1401 code could be for anything Egr related. Usually it is a defective DPFE (differential pressure feedback Exhaust) But, it can also be caused by a defective EGR valve or EVR (Exhaust Valve Regulator) solenoid/switch. --or an air leak at any part of the system including the silicone hoses that feed the DPFE/

Oct 12, 2014 | 2002 Ford Taurus

1 Answer

Code P1405


I have copied the entire description for the code.
Let me know if you need more info. You may need a shop to take a look at the system.

P1405 Ford Description
The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. This is done by redirecting small amounts of exhaust gas back through the upper intake to get mixed in with the air/fuel charge. The resultant diluted air/fuel mixture (i.e., less oxygen per cubic foot) burns cooler and combustion chamber temperatures are reduced accordingly, thereby lowering NOx emissions.
The Ford DPFE/EGR system is controlled by the Powertrain Control Module (PCM). The system employs an EGR Valve, an Electronic Vacuum Regulator (EVR), and a Delta Pressure Feedback EGR sensor (DPFE).
The DPFE Sensor measures EGR flow across an orifice located inside the special EGR Tube. The orifice is positioned between two hose ports coming off the tube which are connected to the DPFE sensor with special heat-resistant hoses. When the EGR Valve is open, a pressure differential is created across the orifice (intake manifold pressure vs. exhaust pressure). By design, this difference in pressure is measured by the DPFE sensor in terms of voltage. The DPFE voltage signal output to the PCM is directly proportional to the flow of exhaust gas entering the intake manifold.

Read more: http://engine-codes.com/p1405_ford.html#ixzz2dUIwIiDd

Aug 30, 2013 | 2004 Ford Taurus

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

1 Answer

I have a 98 ford escort check engine said p0401 what do that mean


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.

Symptoms: You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

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

Check and test it; hope helps.

Mar 18, 2011 | Ford Escort Cars & Trucks

1 Answer

1998 taurus 24v engine code p401-- what is most common fix?


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.

Symptoms: You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

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


hope this helps (remeber to rate this answer).

Jan 12, 2011 | Ford Taurus Cars & Trucks

2 Answers

Trouble code p0401


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.

Symptoms: You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

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


Hope this helps to solve it (remember to rate this answer).

Jan 06, 2011 | Ford F-250 Cars & Trucks

4 Answers

Have a 1995 ford contour and took it to pepboys and they got multiple codes. One of the codes came up twice code 332 says egr valve not opening could this cause all the other codes? My husband has checked...


DTC P0332 is for a knock sensor, not egr valve. That's not to say one of the multiple codes you've mentioned wasn't for the egr valve.

What are some of the characteristics the vehicle is showing. By the way, what is the vehicle? In one place it says 1995 contour, in another it says 1995 explorer.

Jan 03, 2011 | 1994 Ford Explorer Limited

1 Answer

How to replace egr valve on 1995 crown vic 4.6. Valve is in hard place to get to.


On 1995 Crown Victoria the EGR valve is located at the rear of the engine compartment. While the attaching bolts can be gotten out with a little bit of a problem the egr tube that atteches the EGR valve to the right exhaust manifold is a pain. It is possible to do though. Here are the removal and installation instructions. If you are sure that the EGR valve is the reason for any check engine light then you can remove the battery cable for about five minutes to reset the light, but if the light is on for a differant reason then you just got rid of the code plus any freeze frame data that a shop could have used to diagnose the problem.

Check this procedure about REMOVAL & INSTALLATION...

PFED Sensor
See Figures 9, 10, 11 and 12


bcc2045.jpg
Fig. 9: Detach the connector for the DPFE sensor


78e8250.jpg
Fig. 10: Matchmark and remove the vacuum hoses for the DPFE sensor and ...


daae4e4.jpg
Fig. 11: ... remove the retaining nuts from the DPFE sensor and ...


b6fd561.jpg
Fig. 12: ... remove the DPFE sensor from the intake manifold
  1. Disconnect the negative battery cable.
  2. Label and disconnect the wiring harness from the DPFE sensor.
  3. Label and disconnect the vacuum hoses.
  4. Remove the mounting screws and remove the DPFE sensor.
To install:
  1. Position the DPFE sensor and tighten the mounting screws.
  2. Attach all necessary hoses and wiring to the sensor.
  3. Connect the negative battery cable.

EGR Valve Control Solenoid
See Figures 13 through 17


bb3e162.jpg
Fig. 13: Detach the connector for the EVR solenoid


a9fc1b4.jpg
Fig. 14: Match mark the vacuum hoses for the EVR solenoid and ...


57ba344.jpg
Fig. 15: ... remove the vacuum hoses from the EVR solenoid


f5d5cc2.jpg
Fig. 16: Remove the retaining nut for the solenoid and ...


4b98f79.jpg
Fig. 17: ... remove the solenoid from the intake manifold
  1. Disconnect the negative battery cable.
  2. Label and detach the vacuum hoses from the EVR solenoid.
  3. Detach the electrical connector from the solenoid.
  4. Remove the retaining hardware, and remove the solenoid.
To install:
  1. Position the solenoid and install the retaining hardware.
  2. Attach the main emission vacuum control connector and the wiring harness connector to the EVR solenoid.
  3. Connect the negative battery cable.

continue...

Jul 16, 2010 | 1992 Ford Crown Victoria

1 Answer

2001 f 150 code po401


P0401 OBD-II Trouble Code - Insufficient EGR Flow

What does that mean?
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.

Symptoms
You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

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

Re-Check the possible solutions and tell us news (remember rated this).

Jun 02, 2010 | 2001 Ford F150 Styleside SuperCrew

2 Answers

1995 Ford Taurus Sho 3.2 check engine light blink 3 3 1 3 3


Code 33 is EGR opening not detected, this is caused by a plugged EGR exhaust passage in the upper intake manifold, this is a common SHO engine fault, the valve works but the engine does nothing that the computer can sense, since no gas flows, to verify this is the problem open the egr at idle, the engine should almost die, if nothing happens or only a tiny change in idle speed or quality the passages are plugged, if it does stall or get real rough the egr position sensor (usual code for sensor is 32) may be faulty or the valve is sticking. I was a ford dealer tech for 30 years and did quite a few of these, there is a TSB (technical service bulletin) about this problem

Oct 12, 2009 | 1995 Ford Taurus

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