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on the first gen legends...that was before odb systems were used...you would need to locate your ecu..usually on the pass. side fornt floor board under the carpet..once you find it it will have two lights on it one red and one yellow the red one is the one that indicates any problems..the yellow is for fast or slow idle...count the blinks on the red led light then reference it with the rtepair manual...if more than one problem is saved in the ecu..there will be a pause in between the different trouble codes

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Q: Where do you find the obd connector in an 1989 Acura Legend?
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