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2000 Honda Prelude EGR

Tiny
JET4ANG
  • MEMBER
  • 2000 HONDA PRELUDE
  • 4 CYL
  • FWD
  • MANUAL
  • 150,000 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.
Thursday, November 4th, 2010 AT 12:23 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That is a "low flow" code. That is usually caused by a plugged up EGR passage through the throttle body.
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Thursday, November 4th, 2010 AT 12:45 PM
Tiny
JET4ANG
  • MEMBER
  • 2 POSTS
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.
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Saturday, November 6th, 2010 AT 8:17 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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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Saturday, November 6th, 2010 AT 8:26 PM

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