1986F150Six Posted January 15, 2021 Share Posted January 15, 2021 https://www.ebay.com/itm/FORD-ROTUNDA-T80L-50-EEC-II-1980-Electronic-Engine-Control-System-Tester-Extra/124251504565?hash=item1cedf77fb5:g:7YwAAOSwcRdfBPI5 Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 15, 2021 Share Posted January 15, 2021 That's expensive as well! But it is interesting. I didn't know that in '81 the 4.9L, 5.0L, & 5.8L had an MCU. Dad's '81 w/a 5.8L 351M sure didn't. I guess that was in California? And/or in cars? Link to comment Share on other sites More sharing options...
1986F150Six Posted January 15, 2021 Author Share Posted January 15, 2021 That's expensive as well! But it is interesting. I didn't know that in '81 the 4.9L, 5.0L, & 5.8L had an MCU. Dad's '81 w/a 5.8L 351M sure didn't. I guess that was in California? And/or in cars? The 4.9L was for trucks, only. Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 15, 2021 Share Posted January 15, 2021 The 4.9L was for trucks, only. True, so some truck had the MCU. Gotta be CA. Link to comment Share on other sites More sharing options...
salans7 Posted January 15, 2021 Share Posted January 15, 2021 True, so some truck had the MCU. Gotta be CA. Yes, 1980 was the last year for vacuum controlled emissions in California as in 1981 they started putting the MCU in the trucks. Link to comment Share on other sites More sharing options...
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