Question about 1991 Honda Prelude

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Auto transmission S4 button gearshift lever does not operate, At times the engine management light stays on and the s4 light on the dash flickers. would appreciate any assistane

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I believe this is a warning of a transmission problem (flashing S4 light), and u should have it checked by a good trans. shop or dealer. When The engine light comes on and stays on,(does it only go on when the S4 light flashes?)it is a warning of a problem (fuel injection/emissions system), which u can check by doing the following: There is a Electronic Control Unit (ECU), located under the carpet on the passenger (front) side near where your feet would be. There is an LED display on the ECU, the display is a small circle, I believe located at the top center of the ECU. When u get the ECU exposed(by pulling back the carpet), turn the key on, and observe the LED. If any codes were stored regarding a problem, the LED will flash. Count the flashes, Codes 1 thru 9 are a series of short flashes, two digit codes use a long flash for the 1st digit, and a short flash for the 2nd digit. Codes are separted by a pause between displays. If u have multiple codes , they are transmitted in a alternating pattern. Time and space make it hassle to list all codes ( there are 19 for the 91 Prelude), so if u want to go ahead and check the codes, let me know what they are , and I'll tell u what they mean. Good Luck! countrycurt0

Posted on Sep 17, 2008

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tdisline_168.jpg


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I found this one the www.hondacarforum.com
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