My 96 GMC 305 V8 has started having problems starting when the engine is
warm. You actually have to press the gas to get it to start up after the
engine has been turned off after a short trip. Now the engine idle's rough
when it is cold, but after about 2 minutes it is fine. I am sure it is an
electronic part the feeds the ECM data, but I do not know which sensor would
cause this issue.