Question about 1991 Chevrolet K1500

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Egr valve what is the orifice washer size?

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  • hpancoast Sep 28, 2008

    what is the washer size for the oriface on the EGR valve?

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I am changing mine, and the original doesnt have washers

Posted on Nov 14, 2014

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A matter of interest why do you want to know what size the orifice is as if you take the egr valve off some don,t have a gasket some do but they cannot be altered the are standard fittings if i know why i may be able to help you with what it is you are after yates210456

Posted on Sep 28, 2008

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Posted on Jan 02, 2017

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How to troubleshoot and repair 1998 grand am with p0401 code .Its supposed to be egr problem.


Trouble Code P0401 is EGR insufficient flow detected. Modern EGR valve are controlled by the PCM. (Powertrain control module) They consist of multiple port orifices that are all different sizes and the computer combines the ports by opening the ones it needs for the desired flow. One clue with this one is a rough idle. If there are no other codes at all then I would say that the EGR valve is not properly sealed or is itself at fault. Carbon builds up on the plenum of the intake and valve. Pieces can break off causing orifice failure. EGR valve needs to be removed and inspected. Gaskets must seal on both sides of valve. May be able to clean valve and ports if dirty but may need to just replace valve...
:)

Jun 16, 2014 | 1998 Pontiac Grand Am

1 Answer

Egr valve orifice washer


Contact dodge parts with the VIN NUMBER

Mar 02, 2014 | 1988 Dodge Dakota

1 Answer

What is the orifice size for the egr valve on a 1988 gmc 3500 454 tbi


You need to cross reference with your VIN and chevy parts dept

Mar 02, 2014 | 1988 Dodge Dakota

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 does code p042e mean


P-042e-Exhaust Gas Recirculation Control Stuck Open
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P042E-EXHAUST GAS RECIRCULATION CONTROL STUCK OPEN

During regeneration of the aftertreatment Diesel Particulate Filter the Exhaust Gas Recirculation (EGR) valve is commanded to be in the closed position. If the EGR valve is not closed then a temperature rise will occur at the EGR valve orifice. The Engine Control Module (ECM) monitors the orifice temperature of the EGR valve and will set the fault if the temperature is above a calibrated threshold.

Unless the wiring has been tampered with going to the egr valve, replacement of the egr valve is the most likely scenario that will repair this for you.

Jul 13, 2010 | 2007 Dodge Ram Truck

1 Answer

How to remove the egr valve on a 1993 mercury grand marquis


Jack up the passengers side of the car, get a 1 1/16" wrench break loose the fitting to the manifold, hold a 24 mm wrench on the fitting to the manifold, loosen the flare nut on the tube. Then using a 10 mm socket, about 2 inches long, loosen the two nuts under the EGR valve, then take the both out, remove the vacuum hose to the top of the EGR valve, and the sensing line from the small tube. then completely remove the flare nut from the orifice fitting on the manifold. BE CAREFUL with the tube, do not bend it or break it, you may find PB blaster useful the night before on a cold engine loosen these fittings. Once the EGR valve is out, remove the orifice out of the manifold, remove the tube from the EGR valve, again be careful, mark the tube to EGR position before pulling this off, because the top fitting to EGR needs tightened before you put it back in, it will make the lower fitting difficult if you do not line it up right, dry fitting from under the car is helpful, mark it, and then tighten the top. Clean out the tube, be careful not to bend the little tube, either inside or outside the larger tube, it sticks out inside. Clean the orifice, clean the manifold face carefully not to score it, check for blockage there too. Apply anti-seize to the orifice, put it back in the manifold, then apply anti-seize to the bolts for the EGR valve, and the flare nuts both ends. Apply some silicon to the EGR valve face, just enough to hold the gasket in place, put the new gasket on, start the bolts two turns in the gasket, it will hold them in place, then start them in the manifold, then start the lower flare fitting to orifice, tighten the top bolts, and then the flare nut, connect the vacuum line, connect the sensing line. I just recently did this process, it works, if have other EGR issues, the valve is the easiest.

Oct 13, 2009 | 1993 Mercury Grand Marquis

1 Answer

WHERE IS THE EGR VALVE ON A 1990 OLDSMOBLE CUTLASS SUPREME LOCATED AT


6ff5ad5.jpg About $140.00

The EGR valve is mounted on the intake manifold and has an opening into the exhaust manifold.

The digital EGR valve, used on all 1990 and later EGR-equipped engines (Except the 2.5L and 1994-96 3.8L engine) is designed to control the flow of EGR independent of intake manifold vacuum. The valve controls EGR flow through 3 solenoid-opened orifices, which increase in size, to produce 7 possible combinations. When a solenoid is energized, the armature with attached shaft and swivel pintle, is lifted, opening the orifice.
The digital EGR valve is opened by the ECM, grounding each solenoid circuit individually. The flow of EGR is regulated by the ECM which uses information from the Coolant Temperature Sensor (CTS), Throttle Position Sensor (TPS) and Manifold Absolute Pressure (MAP) sensor to determine the appropriate rate of flow for a particular engine operating condition.

Digital EGR Valve Testing:

This system must be checked using a Tech 1®or equivalent scan tool. Steps 4, 5 and 6 must be done very quickly, as the ECM will adjust the idle air control valve to compensate for idle speed.
  1. Using a Tech 1®or equivalent scan tool, check for any diagnostic trouble codes and solve those problems first. Refer to the Diagnostic Trouble Code (DTC) lists later in this section.
  2. Select "EGR CONTROL'' on the scan tool.
  3. Start and run the engine, until it reaches normal operating temperature, then allow the engine to idle for 2 minutes.
  4. Energize EGR SOL #1; engine rpm should drop slightly.
  5. Energize EGR SOL #2; the engine should have a rough idle.
  6. Energize EGR SOL #3; the engine should idle rough or stall.
  7. If all tests were as specified, the system is functioning properly.
  8. If not, check the EGR valve, pipe, adaptor, gaskets, fittings, and all passages for damage, leakage or plugging. If all is OK, replace the EGR valve assembly.
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Sep 02, 2009 | 1990 Oldsmobile Cutlass Supreme Conv

1 Answer

I just bought a 1997 Mercury Sable it was a private sale. Once I got it home the check engine light was on can't remember the code but it when I looked it up it was the canister purge valve. Spent $80. for...


P0401 insufficient EGR flow.

Possible causes:
  • Fault in vacuum supply to EGR vacuum regulator solenoid.
  • EGR valve stuck closed or iced.
  • EGR valve diaphragm leaks.
  • EGR valve or flow path restricted.
  • EGR vacuum hose off, plugged or leaks.
  • VPWR circuit open to EGR Vacuum Regulator solenoid.
  • EVR circuit to PCM open.
  • EVR circuit to PCM shorted to PWR.
  • Differential Pressure Feedback EGR (D.P.F. EGR) sensor pressure hoses both connected improperly.
  • D.P.F. EGR sensor pressure hoses reversed.
  • D.P.F. EGR sensor VREF circuit open.
  • Downstream pressure hose off.
  • Downstream pressure hose plugged.
  • Damaged orifice tube assembly.
  • Damaged EGR Vacuum Regulator solenoid.
  • Damaged D.P.F. EGR sensor.
  • Damaged PCM.



P0443 indicates an intermittent EVAP canister purge valve circuit failure.
Possible causes:
  • Intermittent EVAP canister purge valve or VPWR circuit open.
  • Damaged EVAP canister purge valve.

Mar 13, 2009 | 1997 Mercury Sable

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