All three lights on throttle are flashing, motor will not run.

Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85

Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

Throttle Body Fuel Injection

The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

new subaru enigne. NO YEAR stated !!!!!!

the cold start RPM is wrong.
its NOT THE ENGINE. !!!
the engine controls are out of control.
vacuum air leaks are the reason.
or stuck open ISC /iAC air valve .
or throttle cable set too tight,
of the many. i can find it in 5min flat hands on.
but telling how to find air leaks is a 20 page doc.
you contradicted , idles find then 3000 rpm idle.
which is it.?

that tacho meter is x1000
so 3 x 1000 is 3000 RPM.. all cars
and is 2 times the legal idle.
and 3 times hot. 800 is normal hot
0.8 on the dial zero point eight. = 800

You may have a dirty throttle body and intake manifold

sounds like the battery is bad and not taking charge.replace battery attemp again if not then check for fuel, spark and compression.then c wat happens or wats not working any motor no matter how small or big has to hv those three things to run. hope this helps.

Hello, these codes are usually caused by wiring problems going to one of the coils but could be wiring to the throttle body. If the wiring is good and its a interfereance problem then its going to be harder to find the problem. You will need to use a oscilioscope and monitor each wire at the coil/throttle body and then compare the reading on that same wire at the pcm to determine which wire is having the interference then replace or reroute that wire. Check the wire connections to the PCM also. I hope this helps.

it is most likley the throttle position sensor"mine wouldn't shift into 5th gear because of it" if it bad or worn out it not sending the correct signal to the computer telling the transmission to shift out. before you get lied to by the auto parts stores diagnostics.turn the ignition on with out cranking the vehicle turn it on off on off and on if the check engine light starts flashing count the flashes .say it flashes two times then pauses then flashes three more times then stops that would be fault code 23 you can look it up on the internet or buy a haynes repair manual in your case if it flashes 2 times then pauses then flashes 4 more times it is the throttle position sensor

Turn key on and step on throttle all the way down three times within 5 seconds after the key is turned on.(note:vehicle is not to be running at this time.) service reminder should then flash to show it was reset.It may take acouple of times.

Engine off, key turn to run position, press throttle to floor three times. Light should flash and it will be reset.

Sounds like you have an injector leaking. Have someone just cycle the key on and off to run the fuel pump but don't crank the engine. If you see fuel dripping from the injectors, unbolt the injector cover on the throttle body, remove the injectors and replace the orings around the injectors.

you will need to do a base idle adjustment bridge the diagnostic pin out and the earth pin out black wire and white and black trace(i think) on the diagnostic connector the engine fan should run at any temp and the check engine light should flash this takes out the ecu operation of the vehicle therefore it will be like a carbie(make sure the vehicle is at or close to operating temp) disconnect the IAC connector then adjust the throttle stop screw to get the right base idle 6-800 rpm while slowly blocking off the iac hole inside the throttle body(may stall a couple of times but persist) with this in mind this is also the way to get flash codes from the ecu just with ignition on terms still bridged first flashes are 10s short break then units eg. two flash=20 three flash after= code 23 long break next code and so on 12 is system ok