Idle Problems

[skulptr]

ok so now i'm having intermittent idle problems. idle will drop randomly to about 400 rmps, barely stay running. its been doing this very randomly without a pattern that i can see ever since i removed the intake plenum to replace the vavle cover gaskets.

 

then yesterday, my CEL came on. code, exhaust gas recirculation flow. obviously something to do with the egr valve. the haynes manual says you should be able to see the needle and diaphram move when the engine is revved at full temperature. but i can stick my finger in there and rev it, nothings moving. and if anyone has tried looking in theirs lately, its impossible from every angle. but i can push up on that diaphram, and she dies out, depending how far i push it. i pulled all the vaccuum lines, everything is flowing like it should, or so it seems. any help would be great, i'm getting frustrated.

[180sx]

Replace it then. Or remove it all together (but you have to know what your doing with the vacuum lines.)

[skulptr]

Replace it then. Or remove it all together (but you have to know what your doing with the vacuum lines.)

 

remove it huh? how do i do that without screwing with my emissions? and what do i have to do with the vacuum lines?

[skulptr]

ok, bad egr valve? now i'm getting better gas mileage. 30 miles more on a tank, and i p;ulled a trailer loaded with furniture and went wheeling and still got better mileage. why would that be?