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1997 Honda Prelude NEED HELP

Tiny
VETCPRELUDE
  • MEMBER
  • 1997 HONDA PRELUDE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 118,000 MILES
My Prelude has been shooing the check engine for the past moth. I scanned it and the code that comes out s P0401. That is the EGR. I have replaced the EGR 3 times now and it still comes up. Can someone help me and tell me whats wrong with my car. Thank you and I will really appreciate it a lot.
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Wednesday, November 18th, 2009 AT 4:58 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi vetcprelude,

P0401 = EGR insufficient flow.

Replacing the EGR valve would not help if the ports are clogged. You would need to clear the clogging of the exhaust passage under the EGR valve. Carb cleaner can help to loosen the carbon and compressed air would do the rest. Some digging might be required.
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Sunday, November 22nd, 2009 AT 12:54 PM

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