ECM or TCM
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Tuned
Joined: Aug 2005
Posts: 274
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From: Seattle, WA
ECM or TCM
Hello everyone, I have a 1993 f250 4x4 extended cab with 7.5 and e4od. i had transmission issues with this truck for awhile. while in drive it would some times, not all( it would work great for weeks then mess up for several days to a week). it would hit 1st and second just fine but then would not hit 3rd.I could manually shift 1st to 2 then try 3, same thing, RPM's would hit 4k if I let it. I thought it was transmission issue so I pulled it because I did not know history of this transmission. I put in another e40d from a 1990 parts truck I have that had a good transmission, I knew history. This ran fine in 1990 when parked. My question is would the ECM orTCM not sure what controls tranny. would 1990 ECM Or TCM interchange into 1993?????they are both f250's, 4x4, extended cab 7.5 automatics
Hotshot
Joined: Jun 2015
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ECM —> engine control module if you have a manual or non-electronic (AOD,C6) auto transmission
PCM —> powertrain control module controls both the engine and electronic auto transmission (E4OD, 4R70W).
My assumption would be that you cannot use the ‘90 computer in the ‘93 but I don’t know.
PCM —> powertrain control module controls both the engine and electronic auto transmission (E4OD, 4R70W).
My assumption would be that you cannot use the ‘90 computer in the ‘93 but I don’t know.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
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From: SE Florida
Logistics Pro
Joined: Aug 2014
Posts: 3,571
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ECM —> engine control module if you have a manual or non-electronic (AOD,C6) auto transmission
PCM —> powertrain control module controls both the engine and electronic auto transmission (E4OD, 4R70W).
My assumption would be that you cannot use the ‘90 computer in the ‘93 but I don’t know.
PCM —> powertrain control module controls both the engine and electronic auto transmission (E4OD, 4R70W).
My assumption would be that you cannot use the ‘90 computer in the ‘93 but I don’t know.
I prefer fords naming EEC -> Electronic Engine Control. And to the OP, your trucks EEC also controls the transmission, all in one box.
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