Engine Performance problem
1995 Cadillac Deville V8 Two Wheel Drive Automatic 126000 miles
Ive done the tune-up, changed the oil, and the fuel filter. Now I am looking at a possible egr valve problem. I have poor accelleration, car shut off while idle, idle is shaky. I have a problem code of Po 48. What should I do. And what do you use to clean the egr valve and fuel injectors?