EGR

2000 Honda Prelude

Tiny

jet4ang

November, 4, 2010 AT 12:23 PM

Engine Mechanical problem
2000 Honda Prelude 4 cyl Front Wheel Drive Manual 150000 miles

I replaced my EGR valve and still get error 401 after a few miles. The check engine light comes on mainly when I deccelerate. Could this be a faulty solenoid or vacume leak? The motor only has 10000 mi. On it.

3 Answers

Tiny

Wrenchtech

November, 4, 2010 AT 12:45 PM

That is a " low flow" code. That is usually caused by a plugged up EGR passage through the throttle body.

Tiny

jet4ang

November, 6, 2010 AT 8:17 PM

So what you're saying is that replacing the EGR was unecessary? It was full of carbon. Is there any way to clean that or are we talking another teardown? I just had the engine rebuilt over the summer.
Thank you for your reply BTW. I can't seem to get any answers from these parts of Minnesota.

Tiny

Wrenchtech

November, 6, 2010 AT 8:26 PM

Yes, the EGR valve was probably unnecessary. You have to locate the passage and dig all the carbon out of it. It may turn into a small passage at one point exiting into the throttle body. A coathanger usually works. You may have to remove part of the throttle body. I'm not real familiar with the exact location of that one.

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