[mattd]

I have an 05 Touring with 75k miles. With the van running and in park, the rpms are at about 700-800. I noticed while sitting somewhere for an extended period of time that about every 1-2 minutes, the rpms would drop to about 500 and then quickly jump to about 1000, and then drop back to normal. I have never really paid attention to this before or noticed it, so I am not sure if this is normal for the ody. Any ideas?

 

[mattd]

Is this normal for the ody? I would guess that it is not, however I have been surprised in the past bringing my van in for service for other things to be told that it is normal. Never had that problem with gm, they always seemed to be able to find something or would fix something based on the description of the problem even if it was an intermittent issue unable to be duplicated.