Need Opinions - Code 32 on 1993 Cutlass Supreme 3.1 MFI

Hello,

I have a pesky problem that I definitely need some opinions on. I have a 1993 Olds Cutlass Supreme Coupe S with the 3.1 MFI engine (VIN T) that throws a code 32 for a DTC. The car sat for 8 months before I got it. There is some cracking on vacuum hoses, but nothing that is obviously causing a leak and I already tried isolating the purge vacuum line that goes back to the tank. I have also removed the EGR and thoroughly cleaned the carbon out. I am trying the EGR valve base next. I have removed the intake manifold, checked the gaskets, and put back on with no change. There does not seem to be a set time the Service Engine Soon light comes on, you can drive for 15 - 45 minutes before it will turn on, and then when you start the car the next time it is off. Also, there is no indication of a problem when driving, all seems to remain the same. I am starting a hose by hose check of the vacuum lines, but I'm unsure that will turn up anything. I am missing something obvious or is there anything else I should check?

Thanks All!!!!!