Dear Experts plz plz plz help me.
I have overhauled my vitz 2005, 1000cc.
Now when i started the car first time it was ok.
The problem is when i start driving the car the RPM goes high even if i don't touch the acceleration pedal the cars goes to 60 km/h & If I put the car on Parking or Neutral the RPM get normal.
Issue:: RPM goes high when only car is in drive & reverse mode.
Furthermore the engine light is also came up.
My mechanic is saying we will reset the ECU with the scanner computer & your problem will be resolved. But i know my mechanic he is just doing hit and try methods. Because he first said that adjustment screw of throttle is not in proper position but no change after adjusting it.
Experts kindly help me in this matter, also advise a good mechanic who can solve my problem