cpaul Posted January 23, 2023 Share Posted January 23, 2023 New here so forgive me if I'm repeating a tired topic. My 92 Legacy has an idle issue. Sometimes it idles just fine. Other times it idles high and other times it oscillates from high to low to high. I've read that it may be a dirty throttle body or that it might be vacuum related. Can I get a little advice? Link to comment Share on other sites More sharing options...
silverton Posted January 24, 2023 Share Posted January 24, 2023 hmmm... I haven't had hands on too many of those. I found this in the manual though, it could be your issue. Link to comment Share on other sites More sharing options...
94legacy22 Posted March 20, 2023 Share Posted March 20, 2023 Check knock sensor for cracking dirty throttle body, also purge valve stuck open. You can use a purge valve from a second gen legacy. That’s what I have in my 94 when it went bad. Link to comment Share on other sites More sharing options...
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