[ehollen]

Anybody know the symptoms of a clogged EGR valve??

 

[gwiffer]

surging at part throttle

 

[paperboy42190]

surging at part throttle

what exactly would that sound like? "surging"

 

[gwiffer]

You won't hear it. You'll feel it when you're barely on the throttle and your speed goes up and down slightly. This was common on older hondas without DBW. The EGR valve is easily accessible and removable. I'm gonna spray the bolts with PB Blaster right now. I'll take it off in a few days and see what mine looks like.

 

[lpaudio2]

wont plugged EGR trip a check engine light?

 

[Fredsvt]

You won't see anything in the ports under the valve unless the car is using vast amounts of oil.

The ports that clog are in the intake manifold.

On the V6 cars remove the upper plate to clean out the individual ports, on some K24 engines there's a bolt on plate on the aluminum intake.

 

[gwiffer]

Are you talking about removing part 5?

 

[Jeff]

Hmm interesting. I'm not completely sure, but I think I've felt at random times when pushing the throttle hard, the car kind of jerks once or twice on its way up the RPMs. It's very subtle though.

 

[Fredsvt]

Yes. That plate comes off and all the squiggly ports are in the intake. The gasket will be coated with all kinds of crap too.

EGR is not open or having any effect at large throttle openings.

It only opens at light throttle, light load, and under complete closed throttle decel.