now it wont start.

[mobile madness]

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]

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

 

[mobile madness]

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.