ecu location

lavaman · Post by **lavaman** » July 6th, 2006, 1:34 am

ok guys i need to know the location of the ecu found on the mx-3 SOHC and the location for the computer in a 1991 mercury tracer lts... the car runs really rough and i think swapping the computers will help... all compression in good

MechaManZero · Post by **MechaManZero** » July 6th, 2006, 6:32 am

It is pretty much behind your radio toward the floor. You know those panels in the middle console on the sides behind the radio where your feet go when you're sitting in the car. Pop those out and you might be able to see em.

Limegreen mx-3 · Post by **Limegreen mx-3** » July 6th, 2006, 5:19 pm

i have ran a 1.8 protege dx/se ecu on the 1.6 sohc. but i would not reccomend. i did run it like that for 6 month no issuse. i would not recommend it was my car i mess it up it was my own flaut.

lavaman · Post by **lavaman** » July 7th, 2006, 1:30 am

oh no no no no i did a bp swap and was just wondering where the ecu's were... but i found them... now a new problem... the tracer lts ecu is a 2 plug ecu and the mx-3 is a 3 plug ecu... is there a harness that i can buy to swap them in... and will running the stock ecu hurt the motor?

torpedan · Post by **torpedan** » July 7th, 2006, 12:13 pm

Is one of the ECU's from and Automatic and the other from a manual?

MechaManZero · Post by **MechaManZero** » July 7th, 2006, 12:54 pm

lol

3 plug = auto
2 plug = manual

lavaman · Post by **lavaman** » July 7th, 2006, 4:21 pm

no its auto to auto.... i dont know why it wont fit but the guys said that the mx-3 is a three plug and the tracer is a two plug... i guess imma gonna half to take a look at it

Rayted_m · Post by **Rayted_m** » July 14th, 2006, 2:29 am

hey jus use the regular sohc mx3 ecu. thats what im currently using on my mx3. sohc has 3 plugs i belive while the bp engine has 2 plugs.

the way i did my swap was to use the same mx3 harness with same ecu. car works great. been runing for 3months now with no problems.