1995 Chevy Van engine wont stay running

Engine will crank and run for about 10 minutes, will rev and idle good. Then it just shuts down like you turned the switch off-will restart but does same thing. Replaced fuel pump, filter, relay, coil pack, icm. Prior to I pressure washed front interior-ecm is located under drivers seat. May have gotten wet. Service engine light not on but jumped obd1 and got code 32. Could egr or egr solenoid cause this or am I leaning to ecm.