Question about 2000 Volkswagen Beetle

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What does the EGR light mean when it light's up on 78 Bug . just noticed after driving about 5 miles

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Its the exhaust gas recirculation valve, it may just need removed and cleaned or replaced. also check wires and hoses to valve.

Posted on May 16, 2010

  • carl May 16, 2010

    I believe you mean the "EGR" valve. Exhaust Gas Recirculation valve. It is an emissions control device. When the cylinder temperatures exceed 2500 degrees F the EGR valve will open to allow enough exhaust gas (which is inert) to cool the cylinder. This prevents the formation of NOX, which is a huge contributing factor to smog.
    An EGR valve takes 5 - 15% of the exhaust the exits your car. You can have troubles with this part due to the carbon build up from all the exhaust passing through it causeing the valve to get stuck open or shut

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2004 bug engine surging


The issue may be the EGR valve. Sometimes the valve can test out OK with a vacuum pump but can still cause issues with surging. Is this happening between a quarter and half throttle? The reason you wont notice it before it warms up is because the ECM doesnt activate the EGR valve when it is cold. One temporary test you could do is unplug the EGR valve and try and drive the car once it is warmed up. If this stops the surging this is the issue. One other issue could be your Fuel pressure regulator. Your fuel pressure could be low from this and it will cause your fuel injectors not to be able to vaporizefuel as much causing the bucking feeling. Keep me posted. If you found this solution helpful please rate it when you get a chance.

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1999 taurus service engine lite just came on with 58,809 miles on it, what does that mean most of the time???


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