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What a erg or egr what does it do - Cars & Trucks

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csmock132

Clint Smock

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SOURCE: low egr presure

Low pressure? Insufficient egr flow? How about plugged ports in the intake. What engine? Do you have a vacuum pump?

Posted on May 17, 2010

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I have a 91 pontiac grand am with a 2.5 liter engine. My check engine light keeps coming on. The code says the problem is the egr circuit. My egr is vacumn actuated and has no eletrical connector. Where...


Take off erg valve and clean. Also take wire brush or used air compressor on its highest setting and blow out erg valve and egr housing areas

Aug 30, 2013 | Cars & Trucks

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Erg flow insufficient


  • 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
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
The EGR valve is located in the engine compartment. Its should look this

2_7_2012_10_25_48_pm.jpg

Feb 07, 2012 | 2000 Mercury Sable

1 Answer

I am getting check engine codes that read EGR Flow CKT RNG/Perform and Engine Oil Pressure Switch CKT and EGR Closed Position/Perform


Replace what ever the codes say needs replaced,,,start with the ERG,,,Than run the scan again, if that engine oil switch comes up after you replace the ERG than replace it. Always clear the codes after you read them.

Mar 07, 2011 | 2001 Chevrolet Monte Carlo

2 Answers

Chevy 2002 Malibu ERG valve


Symptoms of a bad EGR valve are usually stumbling idle or the engine stalling when the car is warm (normal operating temperature). Find the EGR valve and locate the vacuum line attached to it. Start the engine cold and wait for it to warm up. When the engine starts to stumble, pull off the vacuum line. If the EGR is bad, the engine idle will stabilize and no longer stumble.

May 25, 2010 | 2002 Chevrolet Malibu

1 Answer

Low egr presure


Low pressure? Insufficient egr flow? How about plugged ports in the intake. What engine? Do you have a vacuum pump?

May 16, 2010 | 1999 Mercury Cougar

1 Answer

Erg valve sticking


ERG or EGR valve?. well if you dont mind the check light coming on and the engine to run like **** in the future, you might want to change it, espcially if you live in an emission state, they wont pass you part if failling.

Apr 08, 2009 | 2005 Chrysler 300

1 Answer

Noise from erg valve of TDI passat


sound like turbo noise its close to egr valve.

Apr 07, 2009 | 2003 Volkswagen Passat

2 Answers

Need location of the erg sensor 2000 ford ranger


The egr valve has two sensors. One is an EGR position sensor which is physically attached to the EGR valve. The other sensor is the DPFE (Delta Pressure Feedback EGR) sensor, commonly called the EGR pressure sensor. It's location varies depending on the engine you have. You can fine this sensor by following the vacuum hose on the EGR valve. It will be with in inches of the EGR valve. The sensor will be black (plastic) or silver (metal), have two or three vacuum ports and an electrical connection on it.

The vacuum pressure sensor is a high failure item on fords. Any Ford parts department will have one in stock, as well as some aftermarket parts stores.

The new sensor may not look exactly the same as the old part, but will have all the hook ups as the old one. You may also need to replace the vacuum hose to the sensor as well

Feb 24, 2009 | 2000 Ford Ranger SuperCab

1 Answer

Blocked Passage on ERG System, or Failed ERG Valve, or ERG solenoid Faulty


Very common on Ford engines with EGR codes is the tube inside the intake manifold that takes unburned exhaust gasses and recirculates them back into the engine for reburning,the tube becomes restricted from hydrocarbons and just plugs up.The intake manifold and tube has to be removed and thoroughly cleaned.

Jul 26, 2008 | 2000 Ford Focus

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