Battery light and brake light are on at idle when i rev the engine to 3000 the lights go off i just changed the altinater

How did you check code's ? OBD2 scan tool ? There are more computers on your vehicle then just the PCM/ECM - engine computer . BCM - body control module , Air bag module , ABS - anti-lock brakes , instrument cluster etc.... Need a factory scan tool or someother professional type scan tool to read these codes. If the check engine (SES) light is on code's are stored in one of these other modules . Your best bet mite be to have a qualified repair shop check it out .(not dealer )

Check leakage in manifold or some big size vacuum pipe like the ones connected to the brake booster or servo.

run a scanner on the system to determine codes to diagnos problem

Have the engine checked for vacuum leaks, that will cause a high idle speed. As a 35 year veteran of auto repair I can tell you that engine flushs are a 100% waste of your hard earned money.

vacuum lines has leaks. also, have your MAF sensor cleaned.

Any codes ? Surging idle or erratic just a lil more info ?

you only set base timing to 15 degrees BTDC (before top dead center).

Ignition Timing

1. CAUTION: Parking brake control should be applied.
   Depress the parking brake pedal, and warm the engine to the normal operating temperature.

1. Turn off all electrical loads.

1. Rev the engine to 2000-3000 rpm two or three times and allow the engine to return to the idle.

1. Turn off the engine and disconnect the throttle position sensor electrical connector. (not really necessary)

1. Start the engine and rev it to 2000-3000 rpm two or three times and allow the engine to return to the idle.

1. Check the idle speed. The idle speed should be between 700-800 rpm in PARK (P) or NEUTRAL (N) position.

1. NOTE: Make sure that the timing pointer is pointing to the 15° Before Top Dead Center (BTDC) mark on the crankshaft pulley. Each notch on the crankshaft pulley represents 5 degrees.
   Check the ignition timing with a timing light.

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http://autos.groups.yahoo.com/group/villagerquest/

Try the IAC valve this regulates the idle.

Ignition Timing

1. CAUTION: Parking brake control should be applied.
   Depress the parking brake pedal, and warm the engine to the normal operating temperature.
2. Turn off all electrical loads.
3. Start the engine and rev it to 2000-3000 rpm two or three times and allow the engine to return to the idle.
4. Check the idle speed. The idle speed should be between 700-800 rpm in PARK (P) or NEUTRAL (N) position.
5. NOTE: Make sure that the timing pointer is pointing to the 15° Before Top Dead Center (BTDC) mark on the crankshaft pulley. Each notch on the crankshaft pulley represents 5 degrees.
   Check the ignition timing with a timing light.
6. If the marks are not aligned, loosen the distributor bolt and turn the distributor to make the adjustment. The ignition timing should be between 13°-17° BTDC.

You may need an alternator.Once battery voltage goes low enough the brake warning light can come on warning you the battery voltage is too low for the brake system to work properly. The bat light is warning you there is a problem with the charging circuit,most likely the alternator.