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How do I replace an EGR valve on a 2003 buick century?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 335 Answers

SOURCE: need buick century egr diagram

If your car runs bad with an EGR code then I would suggest that the EGR valve be replaced. I would like to know what code was set on your computer. It would help greatly. When the EGR malfunctions, you will have rough idle and possible stalling. If you have a code indicating EGR it may also condem the cat converter.Please show any codes that are set. Thanks Moe

Posted on Apr 24, 2009

  • 3600 Answers

SOURCE: '94 BUICK CENTURY 3.1 .. COMPUTER & CODE

it has a digatal egr valve remove the egr valve and lean it with top engine cleaner from GM, with a tooth brush, then test the stepper motor with an ohm meter if it mesures more than 6 ohms replace it.

Posted on Jun 21, 2009

dmftrucker
  • 1922 Answers

SOURCE: How to replace a 2003 Buick Century rear tail light assembly?

open the trunk and unscrew the plastic nuts on the back side of the light assy and replace

Posted on Oct 26, 2009

  • 33 Answers

SOURCE: 1996 buick century, I had a tune up and egr valve

Have an auto parts store check for the code. It is possible that you have a bad O2 sensor or your catalytic converter is clogged.

Posted on Apr 10, 2010

  • 1596 Answers

SOURCE: looking for the egr valve on my 2001 buick

It is Located Top of Engine With a Black Plastic Cosmetic Covre on it and a Steal FLEX HOSE Going Down to Exhaust Manifold.

Posted on Sep 22, 2010

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1 Answer

I have buick 2003 century 3.1L it started running weird and losing power up hills and seemed like it wouldnt shift right and had poor gas mileage. The check engine light came on once briefly. Scanned it...


Check EGR valve to make sure their isn't a piece of carbon stuck under valve seat. Also you need to check exhaust back pressure to make sure you don't have a converter pluged.

Jul 09, 2014 | 2003 Buick Century

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What could be the cause? I have a 1991 Buick century. I just had my heads changed. It ran good for the first day, but today when I was riding I was going 45 mph and pressed the pedal to go a Lil faster,...


You may have a vacuum leak at the EGR valve gasket. They took the EGR valve off your car to replace the head gaskets. It will be a free repair, because they caused the problem by not reinstalling a new gasket when putting the EGR valve back onto the engine.

May 19, 2014 | 1991 Buick Century

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Service engien soon light on a 1999 buick century code 401pd


If the DTC is P0401 it means that the EGR Valve is clogged or air flow is insufficient.Take EGR valve off and clean carbon out or replace EGR valve with a new one.

Oct 28, 2011 | 1999 Buick Century

1 Answer

1996 buick century, I had a tune up and egr valve


Have an auto parts store check for the code. It is possible that you have a bad O2 sensor or your catalytic converter is clogged.

Apr 10, 2010 | 1996 Buick Century

1 Answer

'94 BUICK CENTURY 3.1 .. COMPUTER & CODE


it has a digatal egr valve remove the egr valve and lean it with top engine cleaner from GM, with a tooth brush, then test the stepper motor with an ohm meter if it mesures more than 6 ohms replace it.

Jun 21, 2009 | 2004 Dodge Ram 1500

1 Answer

Need buick century egr diagram


If your car runs bad with an EGR code then I would suggest that the EGR valve be replaced. I would like to know what code was set on your computer. It would help greatly. When the EGR malfunctions, you will have rough idle and possible stalling. If you have a code indicating EGR it may also condem the cat converter.Please show any codes that are set. Thanks Moe

Apr 24, 2009 | 2000 Buick Century

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Egr valve p0401 showes up and replaced it and


i have 1998 buick century replaced egr check eng light still comes on what can i do

Feb 24, 2009 | 1998 Buick Century

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