Expert: INSTALLSUPPORT - 12/18/2008

Question
my 1996 cavalier starts and runs great, but the problem is it wont start all the time. sometimes it will start but stall out about a minute after, and once that happens it wont start up again untill it sits for a while. I finaly had it towed yesterday to have it looked at, i first thought it was a fuel pump or something along those lines. When the shop called back they confirmed it wasnt. He said the car starts everytime for him and the only thing he thinks it could be is the theft system, but he is not sure. any ideas???

Answer
Ok, bad news I am afraid.
This vehicle has a the PASSLOCK I key
based engine disabling system.
The sensor in the ignition switch is waring out.

A bypass is required to circumvent shorly,
or in a short period, the fuel rail
will shut the car down for good..

The PLJX bypass kit to get is used here to get around
this issue.

This Passlock 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 passlock system.

That is it's designed purpose.

However, in your case, this input wire on the PLJX 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 PASSLOCK.
The PASSLOCK would then always be bypassed as long
as that wire is chassis grounded.

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

Also, this is a self learning, resistor sensing
and adjusting module. Once the VATS 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 will on yours as well.

That's what will work on the 96 + Cavaliers.

Regards,

Robert Martin-ALARMTEK/CEO
Master Technician
Mobile Security Electronics
www.PASSLOCK1.com