so i took 3 mins and swapped the egrs. check engine light is now off while the car is running. quote]
Lucky you had a spare EGR valve. I owned a '94 Grand Am GT 3100 for 4 years loved that car, but also poured a ton of money in it. My check engine light would come on in that car and the mechanic I took it to could never figure out why, even after a full tune up, fuel system cleaning, and a host of other sensors, Idle sensor, O2 sensor, cam shaft sensor. I tried a used EGR valve still the light was on. I took a new $250 EGR valve to fix the problem.