The problem may be your ignition key. I have a 97 Cutlass GLS and one of my two keys causes this problem, the second key works fine.
With the remote
(7 Ford Mustang wont start anti theft alarm wont turn off
With difficulty.
To disable the theft alarm on a 2002 Toyota Sienna, put the key in the ignition and turn it halfway. Leave it in this spot for 10 minutes before starting the car.
how to disconnect the factory alarm system on a 96 ford explorer
it automatically disarms when u unlock the car
I just ended up clipping the wire to the on off switch
The factory theft alarm can not be disabled. It is disarmed by unlocking the doors with a key or the remote.
You'll have to get a tuner to disable it through the computer. If your talking with a remote start, you can bypass it with a "passlock" which can be found at car alarm shops
To disable an anti-theft system on a 1998 Honda Civic locate the brain. The controls all function of the alarm system. Once located unplug it from the wire harness.
Use your remote to press disarm or enter the key provided by the factory.
To disable the anti-theft system in a Geo Prizm locate the brain. Once located, disconnect the brain from the wire harness. Doing this will completely deactivate the security system.