Toyota 5a-fe Engine: Service Manual

You have a symptom: "The 5A-FE idles rough, but only when the A/C is on."

Essential for any timing belt replacement or head gasket job on a 5A-FE. Do not attempt a full rebuild without it. Toyota 5a-fe Engine Service Manual

Most DIYers start replacing parts (IAC valve, alternator, spark plugs). A tech with the FSM starts with the diagnostic chart. You have a symptom: "The 5A-FE idles rough,