Help my car 4G93T mater RPM problem

[kenvis]

When car run the RMP meter will go up or go down,like i run at 3000rpm than the meter auto will do down to 0RMP or 1000RPM and it go up 5000rpm or 8000rpm than come down again.
Anyone know the problem .thk

 

[V.rut]

power transistor maybe or RPM meter,check the power transistor socket first

 

[kenvis]

bro V.rut,

Thk ur reply me , yesterday i go workshop and found out is Transistor socket problem and change .now is ok.

Thk

 

[V.rut]

no problem