My 93 2.3 runs perfect above idle, but it never really idles well. It seems to have a miss and idle speed is to low. I have 150k on it and to be honest I haven't had time to check plugs etc since buying it. I've been told by the dealer I got it from that it sat for 18 months on another dealers lot before he got it. I thought it might have to relearn how to idle, but I've put around 1500 miles on it now and still no better. Any ideas would be appreciated, I'm going to stop by the auto parts store today and get the codes read, hopefully that may give a clue. Even with this issue I must say this truck is head and shoulders above the ratty S-10 I was driving. No more GM for me. Thanks guys.