1999 Honda Prelude egr valve

1999 HONDA PRELUDE
223,000 MILES • 4 CYL • FWD • MANUAL
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GARYG369
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replaced egr valve, after 70 miles engine light came on again, i took off line leaving valve and could blow through it, the old valve had lots of buildup
Jan 31, 2010 at 6:36 PM
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KHLOW2008
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Hi garyg369,

What was the trouble codes retrieved?

Did you clean the passage under the EGR valve?
Feb 1, 2010 at 1:06 PM
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GARYG369
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[quote:944f4d5330="KHLow2008"]Hi garyg369,

What was the trouble codes retrieved?

Did you clean the passage under the EGR valve?[/quote:944f4d5330]

hi, the code was 401, no i didn't clean passage under egr valve, is it hard? anything else? thanks a lot for the reply
Feb 1, 2010 at 4:50 PM
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KHLOW2008
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Remove the EGR valve, spray some carb cleaner into the passage under the EGR valve and let it soak for a while. Use a stiff wire or something suitable used to poke the passage to dislodge the carbon and use compressd air to clear them. Repeat a few times if necessary.

Reinstall EGR valve and retest.
Feb 2, 2010 at 6:13 AM