My 93 dodge akota has a high rpm idle and fault codes 12 and 25 any answers

Have you run the system for fault codes, if not do so, you will need a basic code reader for obd2

no
timing has nothing to do with idle speed
run the fault codes and check for a faulty idle control sensor

run the fault codes and check for an accelerator position sensor fault or an throttle actuator motor problem

Run the fault codes . I suspect that it may be an ignition module fault or a faulty coil

I take it that you have a carby in which case adjust the choke cover so that the cam engages the throttle lever and holds the throttle open until the bi-spring in the choke cover moves enough to move the cam out of the away allowing normal idle. If you have efi (Not from your choke word) then run fault codes and see which sensor is faulty. There should be an idle speed around 1200 RPM idle in efi for around 3 minutes and then the idle should drop back.

run the fault codes before you waste any more money as there are several sensors that will cause high idle.

I would check the idle air control valve. The computer controls idle speed by regulating the amount of air entering the throttle body by using the valve. It could be sticking or failing.
I am assuming you have a 93 Monte Carlo.

25 Automatic Idle Speed (AIS) motor driver circuit shorted or target idle not reached, vaccum leak found 53 Logic module internal problem


have you tried to reboot the ECU by removing the pos battery terminal for a few minutes

CODE 14
Trouble Code 14 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally high readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operations among others. The thermistor used has a low resistance when hot, rising as the coolant cools. This error then, indicates a very low resistance in the CTS circuit.
CODE 15
Trouble Code 15 indicates that the Coolant Temperature Sensor (CTS) is reporting abnormally low readings. CTS is used to control fuel mixture, timing, idle speed, TCC and EGR operation, among others. The thermistor used has a high resistance when cold, lowering as the coolant warms. This error then, indicates a very high resistance in the CTS circuit.
CODE 33
Trouble Code 33 indicates that the Mass Air Flow (MAF) sensor is reporting more air is entering the engine than makes sense based on RPM and TPS. The MAF sensor produces a frequency output; around 30 Hz at idle to 150 Hz under acceleration. The frequency varies proportionally to airflow. The ECM monitors the frequency and thus determines airflow into the engine. Typical idle MAF is 5 to 7 grams per second.

My wife had a 93 ford tempo 4 cylinder with same problem.It turned out to be the idle air solenoid mounted on the air intake manifold.