Join Date: Jun 2001
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Re: EGR valve causes rough idle???
You've most likely got it hooked to manifold vacuum, it should be on PORTED vacuum. Check and see if it's got vacuum at idle, I bet it does. The ported vacuum source will only supply vacuum when the throttle is opened up, thus deactivating the EGR valve (and vapor consister purge) at idle.
Don't know where the ported vacuum connection is on a weber, but if you find it, and hook that line up to it, you'll be set.
I'd advice against disconnecting it if you have an emmisions test, you'll probably fail on NOx without it, and it won't affect the way the engine runs if it's working properly.
'97 Sidekick Sport