How do you find your idle problem on a 86 mr2?

To diagnose an idle problem on an '86 MR2, start by checking for vacuum leaks in hoses and intake manifold gaskets, as these can cause erratic idling. Next, inspect the idle air control valve (IACV) and throttle body for cleanliness; dirt or carbon buildup can affect performance. Additionally, ensure that the ignition system, including spark plugs and wires, is in good condition, as misfiring can impact idle stability. Finally, use a diagnostic tool to check for any stored trouble codes that may indicate specific issues.