1991 Geo Metro

Computer problem
1991 Geo Metro 4 cyl Two Wheel Drive Automatic 120000 miles

I'm missing the egr valve " " I had a mechanic plug the computer in and cost me $70 for him to tell me I'm missing egr valve ; well egr valve cost about $150 new. What I need to know. Does this year geo need an egr valve and is it installed on the intake manifold
Nolan roscoe
March 2, 2009.

It has an EGR valve and a vacuum switching solenoid-check on top left side of engine on the intake manifold

Mar 2, 2009.