EGR Valve???

[Audio Accord]

My daily driver accord is having some problems when the car is at idle the engine revs up and down by around 500-700 rpm. some one tols me that it was my egr so I called up the honda dealer to get a new one, they wanted around $200 for one and I had replaced it around 3 years ago I told the guy there this and he told me that the egr should be replaced evry year WTF??? anyways I was wondeing if its really my egr or if not if any of you know this problem with the f22

[ACCLUDE91]

Re: EGR Valve???

Originally posted by Audio Accord
My daily driver accord is having some problems when the car is at idle the engine revs up and down by around 500-700 rpm.

This may seem kinda weird, but does it do it after you press the brakes or does it do it ay point in time whether you used the brakes ior not? I had a similar problem once and it turned out to be a small leak in the line that goes from the throttle body to the brake master cylinder. I spent days looking at and testing the typical culprit engine componenets and everything was fine. I then tried to focus my attention on establishing the pattern of what made it loop in idle and it seemed to do it if I either had my foot on the brake or if I had just finnished pressing the brake pedal. If that's the same case for you, then look at that vacuum line and possibly even the master cylinder.

[Kabuki]

Most of the time we see this symptom be caused by the fast idle valve, in one of two ways. 1) The valve is plugged or broken and won't operate properly. You can clean it out usually. 2) The coolant level is low, even slightly, and the fast idle valve is near the top most point in the engine (bolted to the intake manifold) and will get the air bubble first. I've experienced the latter myself, which tipped me off to the small coolant leak I fixed this morning...

[ACCLUDE91]

I know I'm not the only one to notice this, but some posts are gone from when the database went down!!!! Did you end up getting this fixed yet Audio Accord?