Quote:
Originally Posted by 96 ToyRunner
So I may or may not have to swap out my engine and I was wondering before I do or buy anything do I need to buy a new computer with the new motor I’ve never done it but I’m going to have people that know what there doing helping me out but again wil I need a new computer or will mine work
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It depends.
If you find a motor from the same year with the same drivetrain (rwd/4wd), than you won't have to swap anything related to the ECM.
I swapped a 99 engine into my 97 and had to use the engine wiring harness from my 97. The ECM's are different (connectors) so I either had to re-pin the wiring harness (truck side) to work with the 99 ECM or I could use the engine wiring harness from my 97 on the 99 engine, to be able to keep the 97 ECM.
It was easier for me to just swap the engine wiring harness from the 97 and use it on the 99 engine. Everything hooks up fine (engine side) which allowed me to keep the 97 ECM. I believe 96-98 ECMs are the same assuming its the same motor and same drivetrain. It took maybe an hour or so to swap the engine harness. You do have to pull the upper intake manifold off to get the harness off but it only took maybe an hour or so to do the swap.
Hope that isn't too confusing. The easiest solution is to find a donor motor from the same year/model/drivetrain but other years can work.
So in summary, the ECM's on 3rd gens did change throughout the years.