Car Alarms: alarm cutting off the car, fuel injection system, mechanical issues

Question
I HAVE A 91 HONDA ACCORD THAT HAVE A EXCALIBUR ALARM WITH THE KILL SWITCH ,I HAD IT INSTALLED 2 YEARS AGO AND RECENTLY AFTER DRIVING FOR ABOUT 20 MINUTES THE CAR CUT OFF AND WOULDN'T CRANK UNTILL IT COOLED OFF ,I TOOK IT TO THE SHOP AND THEY COULDN'T FIND ANY THING WRONG WITH IT ACCEPT AFTER 20 MINUTES SOMETHING CUTTING THE IGNITION MODULE SO I'AM WONDERING COULD THE ALARM BE MALFUNTIONING CAUSING THIS PROBLEM?

Answer
Doubtful.
  all that would happen with the Excalibur,
is that it may have a starter disable relay
inline. But it WOULD NOT affect anything
that would cut off the engine when in
gear. You have other mechanical issues that is
causing this situation.

I'd look at the control module that controls the
fuel injection system.

That would stop the car mid drive.

Good hunting.

ALARMTEK