Car Alarms: 1999 mustang GT, remote starters, ford vehicle

Question
When I put the key in the ignition the THEFT light flashes.  It will turn over but will not start. Sometimes if I wait until it stops flashing, turn the ignition off, turn it back on, wait till it stops flashing again- then it will start.  This is random though. Sometimes this sequence works the first time and sometimes I have to do it several times before it will start.  Any suggestions? on how to override this or the proper sequence to get it to turn off?

Answer
Not good.

Troublesome system, and not an uncommon issue
by a long shot.

Ok, unfortunately, this vehicle has the
FORD PATS key based engine disabling system,
and it's not recognizing the chip in your
key.

My expertise is in disabling
the PATS for remote start applications,
so if it's me, I would suggest the Directed 555P
bypass kit to get around the issue. (69.95)

This Bypass Module is designed to momentarilly
allow the engine to remote start by sending a proper
coded pulse to open the fuel rail passlock injector
cut off circuit.

The output from an alarm/remote starter
would then shut down the pulse, once it has detected
the engine has engaged, and preserve the integrity
of the PATS system.

That is it's designed purpose.

However, in your case, this input wire on
the 555P module, instead of going to a
momentary ground pulse from an
alarm/remote starter, would go to a
constant chassis ground, through
the bypass module, grounding out the PATS.
The PATS would always be bypassed as long
as that wire is chassis grounded.

I can not speak about a damaged PATS system,
like if a thief has destroyed it, because I do not
get into this part of FORD'S security application.
But as a happy coincidence to installing
after market remote starters, this does work on bypassing
trnasponder in most all FORD vehicles we've run into,
including your year FORD vehicle as well.

Also, this is a self learning, resistor sensing
and adjusting module. Once the PATS wires have been tapped,
you would press the program button to learn,
and it does. The car should then allow start
with any hardware store key.

It would work on this one too.

Regards,

Robert Martin-ALARMTEK/CEO
Master Technician
Mobile Security Electronics
www.BYPASSMODULES.com