Seville650
08-23-2005, 11:22 AM
I have a 94 STS with 101,000 miles on it. After a tune-up(wires, plugs, coils, air filter,pcv valve, and cleaned the EGR valve,I did not replace the EGR valve) it still runs rough at idle(hunts up and down almost quiting) and shakes on acceleration. At cruise rpm it is also rough and fluctuates rpm. Any suggestions?