My car is a 2009 Toyota Yaris – manual transmission – with a 1.3L engine (2NZ-FE). I installed a 1.5L engine (R1NZ-P20D), but there's a difference in the intake manifold of the new engine compared to the one in the old engine. What's the solution?

In summer the car doesnt change gear and it stays stuck in a gear adn it wount change its like u have it on neutral. What should i do?

My toyota vitz 2sz engine does not change gears

My car can't connect to any obd 2 scanner. It only says communication error. I did continuity test and i notice pinout 4 (chasis ground ) doesn't have continuity. What is the next step.

Hi
I had a check engine appeared so I put a normal obd buyed in amazon, I checked the car it was the oxygen sensor
But I forget to take the obd off the car and I drove it almost two weeks
When I realiazed I had to take it off my car doesn't want to start without it everytime I put it back the engine start
It's crazy, I take off the cable from the battery nothing changed
Would you help me plz
Thanks

I put and obd2 in my toyota yaris to check the problèm and than I forget it for one week, when I realised it was there I take it off, my car doses not want to start without this obd2 plug it in
Can you help me please