Van turns over and starts but only runs for about 3 seconds

2001 PONTIAC MONTANA
122,763 MILES • 0.6L • 6 CYL • AWD • AUTOMATIC
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KIRSTEN SHERLOCK
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So my car was stolen luckily I got it back but unfortunately the problem I'm having is because they ripped out the ignition and it has a security system on it and they lost the key I have replaced the ignition switch cylinder and key it will turn over and crank and start up for about 3 seconds then dies I have put in the codes and reset the security system several times but it is still messed up please help is there any way I can bypass this with a toggle or anything like that
After it starts the second it dies there is this sound up by the break booster it sounds kind like there is a air leak or something. I don't know if that has anything to do with my issue.
May 17, 2017 at 2:19 AM
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HMAC300
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the security system won't reset on this until you have the ignition switch andkey programmed by a mechanic with a scanner. then it will work. so tow it to a shop to do that.
May 17, 2017 at 7:03 AM
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KIRSTEN SHERLOCK
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People with tons of money have that as an option i don't so I need to know how to go about bypassing the security system or disabling it
May 17, 2017 at 11:18 AM
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HMAC300
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you'll have to look online for that but most of the newer security systems are not by passable. call around to mechanics see how much it will be I tmay not be tons of money to fix.
May 17, 2017 at 12:00 PM