Question about 1994 Ford Explorer Limited

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Would a bad ERG Valve cause you to fail emissions test in Ohio? Thankyou.

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Absolutely it would

Posted on Oct 07, 2010

Testimonial: "Thankyou.I thought it would but wasn't sure. I failed it twice. I'll have to get a new one then. Thanks."


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Failed emissions test

Depends on the engine year. On modern, computer controlled cars, a bad egr valve will turn on the 'check engine' light and cause you to fail an emissions test. On older, cars, 70's and early 80's, it doesn't have much effect, but it is easy and cheap to replace it. On newer cars, it is essential, hard to find and a PITA to replace.

Apr 02, 2014 | 1995 Dodge Neon

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I have a 2000 Monte Carlo that is giving me an EGR Valve Sensor code. It does not effect how the car runs at all but it is going in for an emissions test. Not sure if it will cause it to fail. As I said it...

yes, if you live in CA, any trouble code will cause you to fail. Your valve is shown below and the position sensor is integrated into the valve. A new valve is $75. The problem could be in the wiring, but most likely it's the valve. Please let me know if you have any questions, and thanks for using FixYa.

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I would check to see if there is vacuum at that hose causing the EGR valve to open at idle. You may have a bad ERG valve solenoid.

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Car failed MOT on emissions yesterday but after a

Several things.....

EGR Valve
Bad Spark Plugs
Bad EVAP Canister.....

All related items to fuel and spark.

Do you have bad fuel mileage? How does the engine run? Smooth? Chugs? Idles rough?

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1997 Toyota Celica Failed Emissions Testing

Generaly o2 code comes up when anything at all is wrong in the combustion process. I'd have the egr valve tested and cleaned as well as the passages to and from it...They often get plugged up with carbon.

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well if its poping an o2 code try a couple things before you start spending money. when it starts up listen for a rattle from the cattilitic convertor. if you have a bad rattle replace the cat that might solve both codes if no rattle replace the o2 sensor, it might just be that. hope this helps

Apr 09, 2009 | 1999 Saturn SL

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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.

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1995 Toyota Camry - Code 71 - failed emissions tests

replace the EGR switching valve and have the machanic clear the engine check light. I think it should help

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