Hello all, I hope your'e all doing great,
I have been fighting against a weird issue with my Montero Sport 2000, the engine is a 6G72. The thing is when the car is moving at about 1800 RPM the RPMs bounces making the car behave weird at that point, when I accelerate a little bit more the problem is gone only at that RPM range the problem appears.
I have changed coils, TPS, ignition coils and cables, fuel pump, fuel filter, air filter, fuel injector and the problem still there.

See this video for a better explanation.

Can you guys give me an idea where the problem might be? I would really appreciate it.

Thanks.

 

Will it do this in any gear, or in one specific gear? If one only - transmission problem. If all gears (manually shift in low range), then it's the engine issue.