I need some direction. When I start my 90 camaro 350 TPI, it idles fine. When it gets warmed up it starts to idle up and down and dies unless I keep my foot on the gas. It showed a Code 32, EGR circuit. So I have removed the EGR valve and tested it, it appears to be good, it holds the vacuum. I cleaned it and put it back on, no more code, but it is still doing the same thing. I just replaced the distributor cap and rotor.All this started after swapping the transmission. What would be my next step? EGR Solenoid? Is there a way to test the solenoid? Thanks