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now it wont start.


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Mar 3, 2012
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Location
Virginia
Vehicle Year
1987
Make / Model
Ford Bronco ii
Engine Size
2.9
Transmission
Manual
Took out the 93 mt ecu today and put the 91 mt ecu in to match my year 4.0. It cranks but wont start.
 


4 bangin

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Age
36
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Elizabethtown, Ky
Vehicle Year
1987
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ford
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2.3 turbo
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Manual
plug your old computer back in and see if it starts

if so either your computer is bad or there are some wiring differences between the computers
 
Joined
Mar 3, 2012
Messages
84
Reaction score
0
Points
6
Location
Virginia
Vehicle Year
1987
Make / Model
Ford Bronco ii
Engine Size
2.9
Transmission
Manual
The ecu to match my year harness wouldnt start it. Ignition switches wouldnt work and the fuel pump wouldnt stop priming. Put the 93 ecu back in and it started. Guess i bought a bad used ecu. The 93 one runs it but not correctly.
 

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