High Idle Problem. About 1200RPM

[HDS]

My car used to idle fine at about 800RPM.

Now it idles at about 1200RPM.

The idle is always constant. It doesn't surge up or down.
MPG are fine and the power is still there.
The car has 170K miles.

 

[Rootus]

Have you checked codes? When was the last time you gave it a tune up (plugs/cap/rotor/filter/clean MAF/etc)?

 

[randomjoker]

Check ur throttle sensor

 

[HDS]

I'll do the tune up... Haven't done one since I bought the car.