Well I figured out the motor in my '95 4runner is not the original, it has the spring style non-hydraulic timing belt tensioner, which I read came on the 1990-92 motors.

Ive been wondering why the check engine light keeps coming on for the knock sensor, I put one in for a 95, but the 91 part number is different.

So basically im wondering if all 3vze ecus work with all 3vze motors. And does anyone know if the knock sensors are different from the early 90s motors to the 95s?

 

ALOHA im having a similar prorblem i put a 91' toy 3.0 3vze engine in my 95' 4runner in exchange for its origanal 3vze engine i used the 91' block ,heads intake manifold , injectors ,distributor all wiring is still from 95' i only had to rewire distributor all injector plugs were the same ican barly get this thing stated and dosent idle seems like a vaccum leak or miss but i double checked every thing am i going to have to use the ECU from '91 with certain sensors?TOTALLY LOST not to sure what to do but i dont want go through all that if thats not it im hoping anyone that can answer origanal question can also help me MUCH MAHALO

 

bump for answers having similar troubles

 

I thought the ECUs were the same, but the different part numbers give me pause. Did you replace the knock sensor wire? (almost always the cause of knock sensor issues on the threewheezy)