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HAVE A SENSOR WITH A BLU AND GREY WIRE NEED TA KNOW WHERE THIS SENSOR CONNECTS ITS ON A 2002 CAVALIER 2.4L AND ITS NEAR THE EGR VALVE HARNESS

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It might be the intake air temperature sensor. This sensor usually mounts into either the air cleaner or the plastic or rubber pipe going from the air cleaner to the throttle body.
Charlie

Posted on Jun 14, 2009

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Posted on Jan 02, 2017

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Code p0403


EGR is the exhaust gas recirculating valve . It's part of the emission system designed to lower emission of nitrates of oxygen. The vehicles PCM is sensing a problem with the flow or lack of flow thru the EGR valve. The EGR system has several components including the egr valve, erg solenoid, possible EGR temperature sensor and/or a DPFE ( differential pressure feedback sensor) and vacuum hoses. They are located on or near the intake manifold and connects to the exhaust manifold system also.

Jul 15, 2014 | 2002 Mazda MPV

1 Answer

Egr p0401


Check vacuum lines near EGR valves.

May 11, 2017 | Chevrolet Impala Cars & Trucks

2 Answers

Code po 405


EGR Valve issue

May 24, 2012 | 1998 Oldsmobile 88

1 Answer

P1401


Diagnostic Trouble Code (DTC) P1401 indicates that the EGRP SIG circuit input is greater than the self-test maximum.

Possible Causes:

-- Damaged EGR Position sensor/EGR valve assembly.
-- Open in EGR Position sensor harness circuit.
-- Short to EGR Position sensor harness circuit.
-- Damaged EGR Vacuum solenoid.
-- Damaged EGR Vacuum solenoid harness circuits.
-- Damaged EGR Vacuum solenoid-valve.
-- Damaged PCM.

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.

Apr 12, 2012 | 2002 Mazda Tribute

1 Answer

I need written instructions for installing an EGR Valve on a 96 Ford Exploer Eddie Bauer V6 4.0 engine. Trying to pass emission inspection.


zjlimited_986.jpg

Fig. 4: Exploded view of the EGR system and related components for the 4.0L engine (click over pic for zoom)

REMOVAL & INSTALLATION

PFE/DPFE Sensor
This component is found on all engines, and is also referred to as the backpressure transducer.
  1. Disconnect the negative battery cable.
  2. Detach and label the wiring harness connector from the PFE/DPFE sensor.
  3. Disconnect all of the hoses from the sensor.
  4. Remove the mounting nuts, then separate the sensor from the mounting bracket.
  5. If necessary, remove the EVR solenoid and the PFE/DPFE mounting bracket from the upper intake manifold.
To install:
  1. If removed, install the EVR solenoid and mounting bracket onto the upper intake manifold.
  2. If applicable, install the EGR tube heat shield.
  3. Position the PFE/DPFE sensor on the mounting bracket, then install and tighten the mounting nuts until snug.
  4. Attach all necessary hoses and wiring to the sensor.
  5. Connect the negative battery cable.

EGR Vacuum Regulator (EVR) Solenoid
The EVR solenoid is mounted either on the same bracket as the PFE/DPFE sensor, attached to the upper intake manifold, or near the EGR valve on its own bracket.
  1. Disconnect the negative battery cable.
  2. Label and detach the wiring harness connector from the EVR solenoid.
  3. Detach the main emission vacuum control connector from the solenoid.
  4. Remove the retaining nuts, then separate the solenoid from the mounting bracket.
To install:
  1. Position the solenoid on its mounting bracket and install the retaining nuts.
  2. Attach the main emission vacuum control connector and the wiring harness connector to the EVR solenoid.
  3. Connect the negative battery cable.

EGR Valve
See Figures 6 and 7
  1. Disconnect the negative battery cable.
  2. If necessary, remove the air inlet tube from the throttle body and air cleaner housing.
  3. Label and detach all vacuum hoses from the EGR valve.
  4. Label and detach any electrical wiring harness connectors from the EGR valve.
  5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
  6. Remove the EGR valve mounting fasteners, then separate the valve from the upper intake manifold.
  7. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
zjlimited_987.jpg

Fig. 6: Cutaway view of a base entry type EGR valve

zjlimited_988.jpg

Fig. 7: Cutaway view of a side entry type EGR valve

To install:

  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 4-22 ft. lbs. (20-30 Nm) on 3.8L engines, or to 106-49 inch lbs. (1-18 Nm) on 5.0L engines.
  2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 30 ft. lbs. (41 Nm).
  3. Connect all wiring or hoses to the EGR valve.
  4. Install the air inlet tube.
  5. Connect the negative battery cable.


Hope this helps, good luck (remember to rate this comments).

Apr 06, 2011 | Ford Explorer Cars & Trucks

2 Answers

1998 chev.s-10 2.2 lt codes # 107...172..404..405 truck stalls at lights..jerks..won't take gas..pedal to floor...off and on problem...sometimes good for hours , than comes back


Hi, you may have 2 separate problems here. 107 indicates the MAP sensor, and that may be also causing the 172 code. The other codes indicate the EGR valve position sensor, which is integral to the valve itself. I would test both of these before replacing (the EGR valve is about $150 and the MAP sensor about $60-70). First check the connectors on them for any corrosion or poor connection. The MAP sensor is mounted to the top of the intake manifold. The EGR valve is at the back of the engine near the brake booster. Please let me know if you have any questions, and thanks for using FixYa.


MAP Sensor TESTING
See Figures 1, 2 and 3 jturcotte_1442.gif

Fig. Fig. 1: Typical Manifold Absolute Pressure (MAP) sensor wiring diagram (wire color, terminal identification/location may vary on certain models)

  1. Backprobe with a high impedance voltmeter at MAP sensor terminals A and C .
  2. With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
  3. If the voltage is not as specified, either the wiring to the MAP sensor or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
  4. Backprobe with the high impedance voltmeter at MAP sensor terminals B and A .
  5. Verify that the sensor voltage is approximately 0.5 volts with the engine not running (at sea level).
  6. Record MAP sensor voltage with the key ON and engine off.
  7. Start the vehicle.
  8. Verify that the sensor voltage is greater than 1.5 volts (above the recorded reading) at idle.
  9. Verify that the sensor voltage increases to approximately 4.5. volts (above the recorded reading) at Wide Open Throttle (WOT).
  10. If the sensor voltage is as specified, the sensor is functioning properly.
  11. If the sensor voltage is not as specified, check the sensor and the sensor vacuum source for a leak or a restriction. If no leaks or restrictions are found, the sensor may be defective and should be replaced.

jturcotte_397.jpg

Fig. Fig. 2: Using jumper wires and a high impedance voltmeter test between MAP sensor terminals A and C with the key ON and engine off. The voltage should be approximately 5 volts

jturcotte_398.jpg

Fig. Fig. 3: Next test between MAP sensor terminals A and B with the key ON and engine off. The voltage should be approximately 0.5 volts



EGR test: requires a GM scan tool:


jturcotte_1443.gif



EGR replacement:

Linear EGR Valve

  1. Disconnect the negative battery cable.

Note the position of the EGR valve prior to removal. Do not rotate the valve 180?.
  1. Unplug the valve electrical connection..
  2. Unfasten the valve retainers, then remove the valve and the gasket.

To install:

  1. Clean all gasket residue from the gasket mating surfaces.
  2. Install a new gasket and the valve.
  3. Install the valve retainers.
  4. On 1998-99 2.2L models, tighten the retainers to 19 ft. lbs. (26 Nm).
  5. Attach the valve electrical connections and connect the negative battery cable.

Component locations:

jturcotte_1444.gif

EGR valve wiring:


jturcotte_1445.gif
EGR valve pic;

jturcotte_401.jpg

MAP sensor pic:

jturcotte_400.jpg

Apr 03, 2011 | 1998 Chevrolet S-10 Pickup

1 Answer

P1401 AND P1311 CODE ON FORD EXPEDITION 2002


P1401 DPFE (Differential Pressure Feedback EGR) circuit high input: This code is in reference to the actual EGR valve monitoring sensor(DPFE). The actual circuit is damaged, thus, producing false negatives.The silicone rubber vacuum lines going to the sensor could also be faulty, as well. I would suggest to inspect the vacuum hoses that run to and from the DPFE sensor. If the hoses are in good shape; Replace the sensor, itself.

You could also check the EGR valve for faults, as well. If you have access to a hand vacuum pump, you can check the EGR passage quite easily with this device. Once you have gathered your pump; Disconnect and plug the vacuum line going to the EGR valve. Connect the vacuum pump to the EGR valve. Start the car and let it idle. Now, apply a simulated vacuum effect with the hand pump to the EGR valve. Your engine should stumble or stall if the passage is open. If it doesn't, the passage is clogged or the diaphragm in the EGR valve is bad. If the passage is open, it's most likely the DPFE sensor.


P1311
Ionization Misfire Detection Module Communication Fault: This code is not a normal ford code. With that said; I would advise to inspect all wiring that is running to the coils on this engine. This code will usually point to a failed coil or coil wire connection. i would also have each coil on this engine tested for their operational value. Check the entire engine harness for pinching or any damage that my be present.

Nov 30, 2010 | 2002 Ford Expedition

2 Answers

Took it to mechanic after it wont stay running he said it needs a crank shaft position sensor and egr valve. Where is the sensor and how do you replace it and how do you replace the egr valve.The mechanic...


what are the codes that made him think these two parts need replacing. The egr could cause a rough idle or stall, But it would need to be stuck open a little which may not set an egr code.

The crank sensor wouldnt cause a rough idle but the car could stall at times intermittantly.

What are you exact symptoms

Mar 13, 2010 | Saturn SL Cars & Trucks

1 Answer

My son totaled his 2002 cavalier, and I just found a 2003 cavalier with a blown motor. The 8th number on the vin fot the 2002 is 4 while the 2003 is F. what do I have to do to swap motors?


These are different engines. You are about to open a big can of worms ,
I have not done this swap my self so if the engines do not look identical (ie DOHC MPFI)on the valve cover and air snorkle, I would look elsewhere for a decent 2002 model car because the 02 is a 2 valve per cyl. car and the 03 is a 4 valve per cyl. car and I can mostly guarantee the ECU wiring harness for them are different. not to mention there are different EGR locations on this 2,2.
This is a 'throw away" engine meaning it's not worth rebuilding.been there, got the t-shirt.

Feb 23, 2010 | 2003 Chevrolet Cavalier

1 Answer

Where is the EGR pressure sensor


egr valve is usually located near the throttle body (the thing the accellerator cables go to) and it goes from the exhaust pipe to the throttle body, so anyhting from the upper intake manifold that connects to the exxhaust. It is about the side of a (or a bit smaller than) a snapple Iced tea jar/bottle.

Jun 17, 2009 | 2002 Chevrolet Cavalier Coupe

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