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1990 740GL intermittent loss of power 700 1990

posted by  unggthat on  Fri Oct 12 12:18 CST 2007
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last visit: Thu Mar 6 10:37 CST 2014
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My 1990 740GL, automatic with B230F is being odd...it mostly runs just fine, but every now and again, usually when it's just warming up, it'll lose all power for about 15 seconds. After that it'll be fine. The OBD thing put out codes 2-2-1, 2-2-3, and 2-3-3. These codes seem to give me a plethora of options: running lean, IAC valve faulty, amm faulty, etc, but seem to be referring to idle issues mostly. The car idles fine, so I don't know what the issue is there. It has a new-ish cat, so I doubt that is the culprit. Any easy tests to find which sensor is bad?

As always, thanks for any help!

Nate Gundy






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