1996 sunfire replaced motor engine won't fire.Auto theft light stay's on don't blink stay's on

Sure it is not getting any fuel? Then that is the problem. Check out fuel delivery system and components such as fuel pump, filter, injectors being fired, etc.

If the Vat system was activated the car would start but then almost right away after wards shut the engine down. But if you have had the battery disconnected you might just want to check out resetting it for "in case."

Theft light on ? DTC'S - diagnostic trouble code's are stored . Take it to a qualified repair shop an have it diagnosed .

When you say it won't start, do you mean it cranks but won't fire, or it just won't crank? If it just won't crank, you could be having an issue with the starter relay. The often become intermittent before failure. Many owners do not know there is a starter relay because it was added as a recall item i order to protect the iginition switch from burnout. The starter relay is located in the very front of the engine compartment, just to the left of the battery, on the back side of the radiator crossmember.

Do you see a light anywhere on the dash that says SECURITY? This means that the anti theft system is shutting down your injectors. Very common on GM vehicles. If so, check out this link.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Here is a good informative link about the anti theft systems on GM vehicles. Pictures+DO IT YOURSELF solutions..... http://vatspasslockpasskeysecurityhelp.yolasite.com/

These cars were made with an anti theft security system. If you swapped motors, you may have interupted that system causing the the security to turn off the ijector fuel. Just a thought.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

no but what you have bad is your remote start brain box that is triggering the anti theft. i suggest taking to a auto electronic place for servicing or stop using remote start.

Your vehicle is equipped with the Passlock theft-deterrent system.
Passlock is a passive theft-deterrent systemT. he system is armed once the keyi s removed from the ignition. Passlock enables fuel if the ignition lock cylinderi s turned with a valid key. If a correct key is not used, fuel is disabled.

During normal operation, the THEFT SYSTEM light will go off after the engine is started. Ln the unlikely event that the engine stalls and the THEFT SYSTEM light flashes, wait until the light stopsf lashing before trying to restart the engine. Remember to release thkee y from the START position as soon as the engine starts. If after several tries the vehicle still does not start, the vehicle may need service. At this time, you may also want to check the fuses. See your Pontiac dealer for service.

If the THEFT SYSTEM light comes on while the engine is running, a problem has been detected and the system may need service. See your dealer for service. In an emergency, call the Pontiac Roadside Assistance Program at 1 -800-ROADSIDE or 1-800-762-3743.

This ans other details can find it in this link for 1996 Pontiac Sunfire - Owners Manual.

I hope helps (remember to rate and comment this).

can u explain more about the thin wire and jump the teminals on the right?? i dont get it,, the deal with my car is , the anti theft light its no blinking just stay on, thank u so much

You will have to get the codes for both of these modules.Then you can post back and I can help you and explain what they mean.Auto Zone will check the service engine soon light but I don`t know if they can check the theft light.They won`t charge you.