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I have a 2000 Honda Odyssey with 234000 miles. I recently had an EGR insufficient flow code. I removed the intake manifold and cleaned it thoroughly. I also removed the EGR valve and thoroughly cleaned the channel with carb cleaner and a small, thin furnace brush. I successfully removed all the carbon deposits. I replaced the EGR valve gasket as well. I know have a p1491 insufficient EGR Lift code. I don’t know if I should replace the valve, or if something else could be triggering this code. I am welcome to suggestions.
Thank you.
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see if this helps. you may have missed a port.
http://www.justanswer.com/honda/5016i-2000-honda-3-0-p1491-code-replaced-egr-valve.html
I didn’t missed any parts,but thank you. Any other ideas please let me know. I’m looking for a diagnostic procedure for the EGR valve to asses the lift its getting. My service manual doesn’t do the best of jobs. If you can think of a better resource let me know. Thanks
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