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Does the check engine light come on when egr valve is bad

Light comes on intermittently

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Does the 1999 Lexus RX300 have an EGR valve

Posted on Aug 01, 2009

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Emission sensor but your going to have to scan it when it is on! to get a raed out!!

Posted on Dec 27, 2008

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Posted on Jan 02, 2017

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SOURCE: Would faulty EGR valve cause check engine light to come on?

If EGR was out your engine light would stay on!usually hi way drive is a whole new emission game sensor work 100% different that city drive you have a O2 sensor problem don"t Get$$ the problem when if you say it only will do it on highway then take it on highway with OBD 2 in run scan mode have a passenger observe it this will give the the proper code you will need to peg it cheers!

Posted on Dec 27, 2008

468 Chevelle
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SOURCE: Service engine code indicates EGR valve.

You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

Posted on Mar 28, 2009

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SOURCE: Check Engine light is even though my EGR valve is brand new

you can take it to autozone the will test it for free to see if it something else

Posted on Apr 05, 2009

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SOURCE: 02 Trooper Check Engine Light Code indicates

The EGR and all systems are computer controlled and depend on all other sensors to be working correctly. It may be a computer problem. I only say this because I just had a customer with a similar problem replaced ECM and problem solved!

Posted on Jul 08, 2009

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SOURCE: how do you fix a faulty egr valve

I HAVE A 99 JAGUAR XJ8 ....I HAVE CHANGED THE BATTERY AND ALTERNATOR, BUT STILL WON'T START. SHOULD I CHANGE THE PLUGS NEXT OR THE STARTER. IT HAS 110,000 MILES. PLEASE OFFER SOME INSIGHT ON THIS SITUATION.

Posted on Nov 22, 2009

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