I have an 89 RS Conv 305 TBI. It's got 54K miles auto trans. My problem is, i keep getting that **** service engine soon light. The code it pulled first was 32, on a solid light. I read the code book and replaced the EGR valve. Now the light blinks, the RPM's jump, and the code pulled is straight 12 12 12 12 12 12. This is driving me mad. Please help me.