mazdaverx7 Posted August 29, 2007 Share Posted August 29, 2007 i'm interested in purchasing an ecu for my Hardbody pickup (i've been spending a lot of time here, as i have learned a TON from the Pathfinder guys here) and it is p/n MECS-G605 the heading on the sticker is 12. my ecu (currently fried by the previous owner) is an MECS-G625 with a heading of 02. my HB has the VG30I with a 5spd and 4wd. do you guys know if this ecu will cross reference and work or if the fuel maps will be completely off? i'm just rteally trying to get this truck up and going. thank you for the help. i can post pics if you guys want. Link to comment Share on other sites More sharing options...
88pathoffroad Posted August 30, 2007 Share Posted August 30, 2007 Fuel maps should be real close for any same-year same-engine ECU, actually. The big differences are emissions equipment and transmission type. Link to comment Share on other sites More sharing options...
mazdaverx7 Posted August 30, 2007 Author Share Posted August 30, 2007 the ecu will control the trans as well or wil it have its own ecu? Link to comment Share on other sites More sharing options...
Simon Posted August 30, 2007 Share Posted August 30, 2007 It has an ECU for the tranny as well, but the AT model's ECU works with the tranny computer as well. So, you can swap an auto ECU to a manual truck, but not the other way around. Link to comment Share on other sites More sharing options...
mazdaverx7 Posted August 30, 2007 Author Share Posted August 30, 2007 ok, that helps a lot!! thank you. it seems almost impossible to find another ecu from a manual trans D21. i have located an auto trans ecu at a fair price and was hoping that the ecu from the auto trans D21 would work in my 5spd D21. Link to comment Share on other sites More sharing options...
GhostPath Posted August 30, 2007 Share Posted August 30, 2007 ok, that helps a lot!! thank you. it seems almost impossible to find another ecu from a manual trans D21. i have located an auto trans ecu at a fair price and was hoping that the ecu from the auto trans D21 would work in my 5spd D21. Yeah, it may set some error codes related to the transmission (since you don't have the automatic transmission controller in your truck, obviously the ECU won't be able to talk to it), but you can ignore them. The ECU certainly won't care about it in terms of running the engine. Link to comment Share on other sites More sharing options...
unccpathfinder Posted August 30, 2007 Share Posted August 30, 2007 I've got 1 out of my 87 pathy that has the 5 speed...I can check the numbers for ya if your interested Link to comment Share on other sites More sharing options...
mazdaverx7 Posted August 30, 2007 Author Share Posted August 30, 2007 sure, feel free to check the numbers! Link to comment Share on other sites More sharing options...
mazdaverx7 Posted September 2, 2007 Author Share Posted September 2, 2007 also, if anyone knows what year range ecu will work, that would be helpful too! Link to comment Share on other sites More sharing options...
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