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I have been having problems off/on with the sport "S" transmission light coming on and causing a problem with sluggishness and not shifting into the last gear at highway speeds. On takeoff from a dead stop, it's like starting in 3rd gear.
I have been told that it was a problem with my TCU. I pulled it out several months ago, and all contacts, relays, capactiors..etc., looked to be ok. After reinstalling it, i was able to go several months with no re-occurence of the problem. It recently started up again, and is pretty much on 100% of the time now. I removed the TCU again and everything still looks ok.
I have a cousin with an accord that he wrecked. I took his TCU out over the weekend and installed it in my car. My original TCU was an "OKI" and this one is a different mfg.."Denshigiken"....the part numbers were almost the same. I didn't notice when i removed it from his car whether he had the sport transmission option.
Now that the new TCU is in my car, it has eliminated the problem.....except that when the car is in D4, the "s" light is constantly lit.....but it shifts perfectly.
I did see an older post in this forum about the VSS being a possible cause to this issue, so i will attempt to check that as well.
My question is this: can i cause damage to my transmission by having that different TCU installed, that must not be an exact match? Or is it ok to have that installed? I do lose the ability to engage the sport transmission, so i am assuming that his model did not have that option installed.
Any suggestions/assistance would be very much appreciated
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Based on what you've said I would assume exactly what you did... that the part you replaced it with is the non-sport option. That being said it will probably work fine but your car may not shift the exact same and things like that... I personally would look for a replacement part ASAP but run that one until you find it...
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