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Old 11-14-2013, 02:19 PM   #4 (permalink)
dlb
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Join Date: Feb 2013
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i know the car is already gone but it's fun to try to diagnose stuff anyway. my guesses would be a vacuum leak causing the surging idle, and possibly a bad TCU causing the gear indicator light weirdness. my friend's '91 accord had some similar issues so i did some research on it and the TCU's in them tend to burn out in a few places. it's easy to check, just pull up the passenger side carpet under the glove box, unbolt the TCU, unplug and remove it, and look for burnt components on the circuit board. on my friend's, there was just one tiny burnt diode that i could find and that was the source of her problem.
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