Have Toyota Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
Can I get the codes that are stored?
Can you hear excessive spark knock while driving or any performance issues?
You will need to unplug the knock sensor sub harness and ECM and ohm test there wires to power and ground and from both end to see if the wire is weak or chaffed and rubbing another wire or the chassis. If that too passes with a good harness, sub harness, and sensors then check the ECM ground and lastly replace the ECM.
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Hello again Chris here,
Nothing else comes to mind. Glad I could help.
You wrote Thxs again for your assistance though you did not rate my response. Are you still needing help?