the wagon is an 86 carbed gl, new engine, minimal smog junk,no oxygen sensor,doesn't want to idle below 900rpm.&the dash egr lite will not go off. have tried 3 diff carbs, 2 different egr valves,1 vacuum solenoid,sprayed ether at all hose joints trying to find vacuum leak to no avail.can't figure out where the egr lite is getting it's signal from.have disconnected battery several times trying to get ecm to reset,no go, am getting a tad frustrated, any ideas will be tried THANKS DAN