Sputtering or hard starts after it was warm might be indication of either a leaking injector (or several) or a failing fuel accumulator unable to keep up the rest pressure in the fuel system.
Idle issues could range from a vacuum leak, dirty/faulty ICV, fuel mixture issue from the EHA, or the small microswitch at the throttle body. These cars didn't have the idle control modules like the bigger V8 cars had, so that's one electronic gizmo that you don't need to worry about. Could be a fouled plug, improperly gapped plug, bad plug wires, or buildup up the cap and rotor.
Although it solved itself, it's quite possible it will return again. There's just a host of things that could be responsible or contributing to the conditions your described. Check the basic things like plugs and wires, cap and rotor, then start looking visually at any vacuum lines or air hoses for obvious cracks and other damage. If all that checks out, then it may be time to dive deeper into the CIS system and measure things such as the duty cycle to make sure the fuel system is actually functioning properly.
Idle issues could range from a vacuum leak, dirty/faulty ICV, fuel mixture issue from the EHA, or the small microswitch at the throttle body. These cars didn't have the idle control modules like the bigger V8 cars had, so that's one electronic gizmo that you don't need to worry about. Could be a fouled plug, improperly gapped plug, bad plug wires, or buildup up the cap and rotor.
Although it solved itself, it's quite possible it will return again. There's just a host of things that could be responsible or contributing to the conditions your described. Check the basic things like plugs and wires, cap and rotor, then start looking visually at any vacuum lines or air hoses for obvious cracks and other damage. If all that checks out, then it may be time to dive deeper into the CIS system and measure things such as the duty cycle to make sure the fuel system is actually functioning properly.
