QuestionI have a 1990 camry prominent which came with a automatic tranny and a 1VZ-FE 2L V6 engine. I changed it to a 2VZ-FE 2.5L V6 engine and later on changed the auto tranny to a manual transmission (gearbox) and it drove very good. However was the engine was changed I used the wire-lume and sensor for the 1VZ-FE engine in the 2VZ-FE engine. The engine lick bearing and I then put in a 3VZ-FE engine 3.0L V6 and again I used the sensor for the 1VZ-FE engine.
The problem now is that it cannot start, I made a number of checks which revealed that the injectors are not pulsing, hence no gas in the cylinders, hence it cannot start. However if I try to start it and manually ground any of the injectors it starts. This is telling me its a grounding problem because the computer is find (it starts other similar car). I did continuity checks on the wires and they are okay (ie the earth wire from the injectors to the computer).
What could be a possible cause for this problem.
Do you have a wiring diagram for these V6 camry engine.
Where would I find the ground wire from the computer to the chasis which deals with the injectors and what is its colour code.
If possible could you explain step by step how the injectors pulse when the key is turned, which should include the distributor, coil, ignitor, computer and injector resistor if they carry it.
AnswerYou have taken on quite the project. I am presently working on a similar situation where another engine was used rather than the intended one. My professional judgement is this: Use the same ECM, wiring harness, and intake designed for that car. There are too many reasons, but the number one reason is this. Toyota manufactures an excellent product. Their vehicles work under OEM guidelines. When you figure yours out with the modified changes you have performed, then I will yield to you as a better mechanic than I.
