2004 Ody. Slight surging

Sounds like you have EGR port issues.

For the 2004 model year, it is most likely a faulty EGR valve as opposed to the ports clogging.

Everyone,
Thank you so much for the input.

I was thinking the same thing and just wanted some other opinions. I will try out a new valve this weekend and let everyone know the results.

I am a bit of a wrench head and do almost all of my own repairs. So this will be an easy change for me... Just hoping that this is all it is.

The issue is so consistent and only happens under the same exact parameters.

Thanks again.

Dave

Quick update.

This weekend I removed the EGR valve and inspected it. It looks fairly clean.

Here is the kicker though. After I removed it I noticed that there was NO Gasket! The gasket that is supposed to be between the egr valve and the engine is non existent. ( metal to metal = very bad seal) This is what I believe is causing that crazy noise. I think that when the egr valve is opening, the vacuum is strong and actually sucking air through the non sealed connection which makes a crazy fluttering noise. ( like a vacuum leak). This would in turn mess with the mixture in the engine.( possibly causing surging)

This leads me to believe the egr was replaced or cleaned once before and the person doing the repairs forgot to replace the gasket.

I am running out tonight to get the gasket and take the car for a test drive. I will post an update afterwords.

David
What do you think?

Update*

Replaced the gasket. Still getting the crazy fluttering noise and the rmp surge between 1300 and 1500.

This noise is like a loud flutter. Does it still sound like a bad egr? I am not getting any codes yet.

David

Same problem on 1999 Ody

David,

Did you resolve the rpm surging issue?
I have a 1999 and I have the same propblem.
Changed Egr valve (ports previously cleaned) and still doing it.

Thanks,

John