Ok to make a long story short i blew up my 98 z28 camaro had to have the whole bottom end replaced stock cost me 2000 i think i got ripped on that not sure though. anyway the guy took me egr stuff off and i read somewhere that it will make my check engine light come on but it was already on no catalytic converters anyway i read that if the check engine light is on then my fans will always stay on. well they dont but i am not sure if they work because i have never witnessed them being on.
It will make the check engine light come on. I also have a 98 and mine wouldn't even run without the egr until I had it tuned out. I don't know if the check engine light being on will make the fans run all the time. I wouldn't think it would.