88 olds. cutlass ciera int. 3.8 unstable/bumpy idle
Hi, I own a 1988 oldsmobile cutlass ciera international w/ the 3.8 v6. I replaced the coolant temperature sensor due to the code set by the ECM; its reading high. I replaced it yet the code did not go away even when I cleared the ECM, and the engine still has an erratic idle, it sounds like its in the normal rpm range of idle speed, but it still a bumpy idle. I checked for vacuum leaks, replaced the MAF sensor, but it still comes up as a coolant temp sensor reading high. Any ideas?