JDavis80 Posted July 18, 2022 Share Posted July 18, 2022 I have a 1988 MJ. Wanting to upgrade the ECU, I purchased an ECU # EF8953005428 to swap out for my old one. Just got the existing one out of my MJ and now I'm wondering if it might be from a newer-than-88 MJ. Wondering if anyone on here can confirm? Numbers from the existing one: 53007842 and S101155201A; also has a white sticker on the corner saying "9012". Picture of existing ECU attached. Thanks, Justin Link to comment Share on other sites More sharing options...
eaglescout526 Posted July 18, 2022 Share Posted July 18, 2022 That one according to the parts catalog is a superseded number from an 87-88 ECU which in turn fits all years from 87-90. Link to comment Share on other sites More sharing options...
JDavis80 Posted July 18, 2022 Author Share Posted July 18, 2022 Thank you! Link to comment Share on other sites More sharing options...
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