Cut a strip of aluminum can the width of the UPC. Take off the dist cap and lay it aside. Don't remove the wires except for the one or two you need to put it aside. Take a 10mm wrench and loosen
the two bolts that hold the EGR tube to the bottom of the intake snout. Slip the aluminum between the EGR tube and the bottom of the intake. Tighten the two bolts, replace the dist cap and reattach the two wires. See if your idle problem is solved. If so there is a crack under the insulation. It is very hard to find that leak with the insulation in place. 80% of high idle problems on the V6 are from that tube being cracked. You can replace the tube or braze or have it brazed back together.
Leaving the aluminun strip in place is not a good long term solution. The computer advances the timing when it activates the EGR. This can cause pre-ignition and can destroy your pistons. If you chose to eliminate the EGR, and EGR tube and EGR control solenoid, you must also have it programmed out of the ECM. You can purchase a PROM for your ECM that has the EGR programmed out here - http://www.reddevilriver.com/Related_Products.html
- note - shameless self promotion
"extra' vacuum fitting at the cruise//www.fiero.nl/cgi-bin...7645&style=printable
Note - the electro-vacuum cruise on the Fiero sucks.
Digital GM cruise http://www.fieros.de/en/articles/digcruise.html
[This message has been edited by phonedawgz (edited 11-24-2014).]