The previous owner of my truck disconnected the egr valve. The egr itself has some sort of stuff inside the hole to plug it where the vacuum line goes on. The vacuum line has a screw in the end of it and the solenoid is plugged probably with the same crap thats in the egr. Every now and then the ecm throws a code 32 at me cause its not getting vacuum from the egr. So i disconnect the battery to clear out the code and it wont come back for awhile. The engine doesnt get hot at all, never has reached 210 even when towing a 2500lbs hayblower for landscaping. It doesnt ping either, it mite be because i use 93 octane gas. My question is, should I go and fix this mess or does anyone know why this was done to it, for a reason?