high EGR flow fault code question

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dgangle

total rice
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If you had a check engine light indicating too much EGR flow, how would this effect performance/economy/emissions/etc?
 
My guess is it’s stuck open, not sure about performance though.
It’s mainly dumping garbage back in you engine. On my VR4 Galant, I have an EGR block off plate and it keeps the intake nice & clean. I’m sure if you tried this on the 100 it will throw a code, but would be nice to keep the throttle body & intake clean.
DMX
 

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