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Failed egr flow (failed inspection) - 2001 Mitsubishi Galant

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EGR is fed via a hard metal pipe from the exhaust manifold to the EGR valve, that pipe gets clogged with soot. You need to clean out with carb cleaner and a brush or piece of wire. Soak it and reinstall. EGR also has a vacuum line to it, make sure that is still attached and not broken or leaking.

Posted on Oct 21, 2010

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Posted on Jan 02, 2017

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I have a 2004 pontiac grand am with the service engine light on. When read it was the P0300, P0401, and P1404 codes. The mechanic said there wasn't a leak, so it must be the EGR valve. It was replaced. I...


po300 random misfire po401 low flow egr p1404 egr. check spark plugs and check for vacume leaks. with the po400 1404 could be your egr valve is good but po400 means low flow which to me indicates that the egr passage may be clogged up and needs to be cleaned out check out scottykillmer.com the passage way may be easy to clean depending on the position of the egr vavle but you might have to remove the intake manifolld

Nov 02, 2013 | Pontiac Grand Am Cars & Trucks

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P401


There are several possibilities for this problem. If you have a 4.6L V-8, there is usually a problem with the channels for EGR flow. On this motor the airhorn on top of the intake manifold must be removed and the groove or channel under the gasket cleaned. It takes a new gasket and the removal of 8 bolts and the air snorkel. Check if egr is operating.

If this is another motor, check the egr, then chamber that egr is mounted on.

For either application, what is happening is the flow is not good enough where it is measured. The reason is either the flow is not present before the Egr or the Egr is not opening to let the flow through it. That is why the egr needs to be inpected to see if it leaks. If the egr does not leak, then the channel is blocked.

Apr 18, 2013 | 1996 Ford Thunderbird LX

1 Answer

2000 mazda b2500 2.5l flutters &stalls after reving engine has tdc p1401 what is the problem


The dfpe is essentially a flow meter that measures the flow of exhaust gasses returning to the intake manifold when the pcm opens the egr valve. This code is telling you it is not getting data from sensor. Could be the sensor has failed, has been disconnected, or the wiring/connector is bad. Since the engine is stalling, it may be that the egr valve is stuck open or the pipe between the exhaust manifold and the intake manifold has come loose. Inspect the egr pipe, valve, and sensor connections.
The figure below is for the 3 l engine. I could not find the 2.5. See the two ports near the top of the tube? Those will vave vacuum lines attached that lead to the dfpe sensor.

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Sep 02, 2017 | Cars & Trucks

1 Answer

FAILED EMISSIONS TEST P0401&P0420 CHECK ENGINE LIGHT RESETED MANY TIMES WHEN CUT OFF ENGINE LIGHT COMES BACK ON AFTER 5-6 MILES. I HAVE REPLACED EGR VALVE .STILL WA\ONT PASS INSPECTION. WHATS NEXT?


P0401 indicates that the Exhaust Gas Recirculation Flow Insufficient Detected. This can be because EGR is faulty . As you have replaced this then the problem must be with the vacuum line . EGR valve vacuum line which can be broken or blocked. The vacumn ine must bbe checked for leaks or any blocks using an vacumn pump connected the line.

P0420 indicates that the down stream oxygen sensor reading is not steady and it is connected with the code P0401.

Jan 05, 2011 | 2001 Toyota Camry

1 Answer

I have a 1998 dodge stratus and the code 403 egr flow cicuit malfunction comes up how can i fix this problem so i can pass inspection


Check all vacuum lines to the EGR valve, the EGR valve is between the intake and the exhaust, EGR stands for Exhaust Gas Recirulator valve. It must be able to flow properly in order to pass emissions anyway if they do a smog test.

Jun 25, 2010 | Cars & Trucks

1 Answer

Have a po405 code on a 02 impala, said its a egr


In Hopes the info BELOW will Help, And Also the Mass Air Flow Sensor is A Totaly Different Sensor (MAF) The EGR Valve Code you are asking About is More Related to the Exhaust Gas that the EGR Valve is Allowing to Flow Past Its Self. I can tell you that From My Own Experience that EGR Valves Get Dirty More than they Fail and Require a Simple Removal and Cleaning of Carbon Buildup. This is after the Procedure Below is Performed.

CIRCUIT DESCRIPTION
The powertrain control module (PCM) monitors the exhaust gas recirculation (EGR) valve pintle position input to ensure that the valve responds properly to commands from the PCM and to detect a fault if the pintle position sensor circuit is open or shorted. If the PCM detect an excessively low EGR Position sensor signal voltage, this diagnostic trouble code (DTC) will set.

CONDITIONS FOR RUNNING THE DTC
The system voltage is greater than 10 volts .

CONDITIONS FOR SETTING THE DTC
  • The EGR Position sensor is less than 0.14 volts at any time.
  • The condition is present for more than 20 seconds .
ACTION TAKEN WHEN THE DTC SETS
  • The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle in which the diagnostic runs and fails.
  • The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.
  • The PCM disables the EGR valve for the ignition cycle.

Apr 08, 2010 | 2002 Chevrolet Impala

1 Answer

When did Ford Make it manditory to change out Oil Cooler when replacing EGR Cooler on F-250 or warranty would be void on that EGR Cooler?


They do this because if the oil cooler is partialy blocked up then the coolant flow into the EGR cooler will be restricted and will cause the new cooler to fail. The leading cause of EGR cooler failure is from overheating. either from lack of coolant flow or a bad EGR valve letting to much exhaust flow through the cooler.

Oct 20, 2009 | 2004 Ford F250

2 Answers

Engine starts and stalls


1 Inspect EGR Valve EGR Valve Sticking Open/Leaking. 2 Inspect Idle Air Control Valve IAC Valve Sticking or Faulty. 3 Inspect Mass Air Flow Sensor Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.

Jul 06, 2009 | 1987 Dodge Ramcharger

2 Answers

My problem is dtc p0402 I fail the inspection stiker because of that, my car is a 1997 mer- cury sable 3.0L engine V6


Try removing your EGR valve & cleaning good with throttle body spray cleaner, as well as clean hole under it. Re-install with new gasket & try. If that doesn't work, you may have to replace it.

Mar 27, 2009 | 1997 Mercury Sable

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