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Replaced egr valvedid good fo a couple days and engine light came back on. Took back apart cleaned with carburator cleaner and the same thing happened

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  • Isuzu Master
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Pull the error codes and follow what that indicates.

Posted on Oct 03, 2010

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Posted on Jan 02, 2017

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2 Answers

We have a 2008 Mazda Cx-7 Sport, that has 76,600 miles on it. All sudden the check engine light came on so I took it to the dealer and they didn't charge anything and said it was the gas cap causing the...


Well in my Advice please check connecters grips might be they have some carrageen in front of engine & bay & near that EGR valve might be some grip lose or broken just replace it or tight it , well yes you can wash EGR valve with petrol or you can use anti rust spray(WD-40 or carby cleaner) ...hopfully you ll fix your car best of luck.....

Nov 13, 2013 | Cars & Trucks

1 Answer

Ford Escort P1405 Error Code


Are you sure you have EGR flow?? Hold the EGR valve open the engine should run poorly, if not you have no flow.

May 31, 2012 | 1998 Ford Escort

1 Answer

Lack of power and lots of smoke from exhaust


You've done a lot of work. How does your EGR valve look Its the 'space ship' gizmo under the air cleaner. Remove and decoke is a quick job and it may just cure the lot

May 07, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

Just changed plugs running well 1 day later service engine soon light appears. Took to parts house code P0401 is what shows cleared code not returned yet


Technical Description

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.


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

Jan 13, 2010 | 2002 Ford Expedition

4 Answers

Insufficient egr flow, already replaced egr valve and purge valve canister


I too replaced the egr valve and was discouraged that the check engine light came back on with the same "insufficient flow" code. I took it to my mechanic to put it on the monster diagnostic machine. It said "check all vacuum line, and or map sensor". After looking real close we found a melted vacuum tube, and a cracked vacuum angle connector. Replaced both vacuum pieces, reset the codes, and good to go. If that fails than the next thing is the map sensor, that tells the EGR valve what to do.

Jan 12, 2010 | 2002 Chevrolet Impala

1 Answer

I have a pt cruiser . the engine light turned on. when I took it for diagnostics it shows the code P1193 whidh indicates the EGR valve needs replacement. I took it off and cleaned it good. I reinstalled it...


Yes, you have to replce the valve and yes, your gas milage will improve because it is part of the awesome emissions system....all that comes into play but, seriously, replace the valve. I know....they aren't cheap!!!

Aug 26, 2009 | 2002 Chrysler PT Cruiser

1 Answer

2005 grand caravan error code P0400 egr valve chk/ performance


I have the 2005 Town & Country TOURING . If my memeory serves me correct, I believe this was the same code that I got on time. The van didn't seem to drive any different but this is what I did and I haven't seen the light come on since.
first I went to the dealer ( you can get these parts from a auto parts house also) and bought the 3 gaskets total.for the the EGR solenoid vavle assembly where it bolts on to the engine ( that gasket was made from metal), NOTICE AN INDENTATION IN THE METAL GASKET WHEN YOU TAKE IT OFF,YOU WILL WANT TO PLACE THE NEW GASKET IN THE SAME DIRECTION. one gasket that goes between the EGR valve solenoid and the small stand pipe. and another gasket that goes between the stand pipe and where it connects to the plastic valve intake area cover on top of the engine.
I took the EGR solenoid off from the engine and took it apart (reall carefully) and cleaned it thouroughly with a spray carbuerator cleaner. I took mine "completely apart" after I did this I dont recommend to do this again, you can damage the coil inside if you're not cafefully. I suggest just cleaning the valve and plunger ports, etc....
When it was completely dry I reinstalled the EGR solenoid on the van making sure I used ALL NEW GASKETS. The van hasn't produced the engine light since. I hope this helps.

Jun 11, 2009 | 2005 Dodge Grand Caravan

2 Answers

SERVICE ENGINE LIGHT ON FAILED EMISSIONS


Yes, take it back. The might of replaced the Egr valve to turn off the light. Don't let them charge you for retesting it, that's why you took it in in the first place.

Mar 13, 2009 | 1996 Chevrolet Corsica

3 Answers

How to replace EGR valve on 99 Chevy Tracker


Take off your EGR valve and clean it out with carb cleaner also
grease tyhe little screw thing in it,,, u will c what i mean if u take it apart. carbon builds up in the chamber. it is located at the back left side of your engine and is a bit of a pain to take off. this should save u the cost except for the cleaner and labor. i had the same problem cheapest i found was 90$ on ebay.

Nov 20, 2008 | 1999 Chevrolet Tracker

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