Originally Posted by xmel012
rpm reachs only to 5000 and and then it is breakdown sharply. I have no cheks. whats the matter???
Sounds like the throttle unit is not quite good or does not match to your car.
Measure the resistances of 2 sensors
below attached to the throttle body.
The throttle position sensor
should show around 1.8 kΩ between terminals 1 and 4. Also check the resistance change of terminals 2 and 3 rotating the valve and confirm there's no abnormal resistance jump or glitch.
The similar thing can be said to the accelerator position sensor
, but the resistance should be about 2.5 kΩ between terminals 3 and 4. Also check the resistance change of terminals 1 and 2.