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How do i turn off the check engine light on my 2000 chevy impala

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  • 378 Answers

Take the neg wire off the battery termal for a bit than but back on or use a scantool

Posted on Dec 02, 2012

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Posted on Jan 02, 2017

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SOURCE: Chevy impala diagnostic code PO742

i have the same problem, what can i do to fix it?

Posted on Jan 18, 2009

  • 15935 Answers


The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.

The EGR valve is vital to your car's emission controls.

When the EGR valve goes bad, it must be replaced - it cannot be repaired.

  • EGR Valve = Exhaust Gas Recirculation Valve.
  • The EGR valve controls formation of noxious emissions.
  • Rough idle and poor acceleration can be caused by a faulty EGR valve.

  • The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on accelertaion.

    The only short term problem is a decrease in gas mileage - but it should really be replaced before sensors become sooted or your cat. convertor gets overworked prematurely.

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    Posted on Apr 15, 2009

    • 145 Answers

    SOURCE: check engine light on

    You cannot reset the check engine light any other way than using a scan tool. Some auto parts stores will scan the vehicle for free then at least you will know the area of the fault.

    Posted on May 07, 2009

    • 5 Answers

    SOURCE: How do I reset the check engine light?

    disconnect the battery for 10min and the try it

    Posted on Jun 03, 2009

    • 10 Answers

    SOURCE: 2000 chevy impala a/c low pressure port


    Posted on Jun 28, 2009

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    Where is the license plate light fuse on 2003 chevy impala?

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    My 2000 chevy impala automatic transmission does not seem to be shifting into 3rd gear

    If you have no check engine light on, than change the filter and if that dont do it, your transmission is bad

    Feb 26, 2013 | 2000 Chevrolet Impala

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    I have a 200 chevy impala the egr valve has been replaced and reset but the check engine light is still on. I drove the car over 100 miles and check engine light still on. Could you tell me how long the...

    Well, I don't know the way you reset it but The way I have made it and it worked it is unplug the battery for little longer than 10 min the plug it back and you're done good luck!

    Aug 01, 2011 | 2000 Chevrolet Impala

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    I have a 2000 Chevy Impala with Police Pck and lights dont work

    Replace the headlight switch
    That is the last item to be bad unless the wiring is disconnected..

    Jun 05, 2010 | 2000 Chevrolet Impala

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    How can i set the timing on a 2000 chevy impala

    you only need to set timing on the engine NOT the gearbox.

    Mar 31, 2010 | 2000 Chevrolet Impala

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    2000 Chevy.Check engine light always on.Very little reserve power

    add a can of sea foam found at auto parts stores and clean the air cleaner sensors inside with carb. cleaner spray. Change the air filter if needed

    Mar 25, 2010 | 2000 Chevrolet Impala

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    Chevy Impala 2001 w/ 3.8L engine - EGR stuck open

    there are a couple of things, first make sure there are not restriction in the exhaust, i know the dealer has had to replace converters under warranty because of this problem, then theres a reflesh program for the computer due to this problem, and lastly,run with egr off make sure it clean of carbon,carbon gets stuck in pintle sets check eng lightbut carbon then blows by so when you remove egr you see nothing, well start with these good luck.

    Nov 28, 2009 | 2000 Chevrolet Impala

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    Multiple random miss fire

    Now change the distributor. Get one from salvage or e-bay. Did the timing belt jumped a tooth or is it new. Vitally

    May 12, 2009 | 2000 Chevrolet Impala

    1 Answer

    2000 chevy impala will not start with remote start

    There are several things that can cause this.
    A common cause for this is that the check engine light is, or has been been on. When the check engine light comes on, a trouble code is stored in the computer. Most trouble codes will cause the remote start to become inoperative. Repair of the check engine light code is needed first. A scan of the system will show any stored codes.
    Another cause is a faulty hood ajay switch.
    Tech JK


    Jul 23, 2008 | 2002 Chevrolet Impala

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