2003 Malibu starts but stalls immediatly?

[manicmechanix]

Originally Posted by brokemalibu

Fixed the malibu. It was a paslock problem. added a resistor to the ignition. cost one buck. To diagnose the prob, just turn the ignition on for ten min the turn off and it started. If this works you have a paslock prob. A guy goes by handle, ponchanutty has the fix. Worked for me. was thrilled. others say they had just a good a result and it lasted. Good luck all Thanx Mike

Thanks for get back about your fix. I thought youalready knew about the Passlock and what the theft light indicated, so I assumed that wasn't what was shutting off your injectors. I also assume the other guys problem isn't Passlock, but I wonder why he's never gotten back about his car.

[the_unicycle_guy]

Turned out to be the alarm. Wasn't my car so I had no idea that that could be the problem. My father-in-law took the car and was just as stumped as I was. Used to be his car and he eventually noticed the light flashing. Wish I would have figured that out sooner. He said that the alarm reset itself after being loaded onto the flatbed because it was raised up on an angle. Any idea why it's arming itself in the first place?

Where are you adding the resistor to prevent this problem?

Thanks for all the help guys.

[manicmechanix]

Mystery solved. It was the Passlock and not a real hard fault shitting your cars injectors down .

Regarding bypassing the Passlock with a resistor, there's a big thread on here cov ering that topic. Personally, I wouldn't bypass it. If the theftlock kept setting, I'd replace the ignition cylinder. I think the resistor can be replaced in the wire just before it connect to the BCM. It might be easier to do it there.

[sbriar]

what resistor value or size would you use

[clutch492]

There are 2 small wires that follow the steering column down. First you need to check the resistor size that is on your key, and find an in-line resistor at radio shack that is very nearly identical in resistance. Cut the 2 wires on the column and solder in the resistor on the car side of the wires (not to the wires that go up to the key). The computer needs to see this resistance to know that the proper key is in the tumbler.

Go to this site and you will get a very good idea of what to do.

http://newrockies.ca/vatsbypass/

[CalifOkie]

That does work but the downside of it is that the passlock system was designed to make it very difficult for a thief to steal your car. Simply popping out the lock cylinder and starting it with a screwdriver no longer worked... However, after you do that modification your car can be stole with a screwdriver.

[CalifOkie]

Another thing to try before slicing into those wires is a second key. Many times in a passlock problem the sensor in the lock cylinder isn't what fails. The key itself can fail causing the same problem. So I would suggest if your security light is on and you can't get it to stay running. Try your wife's key in it first before disabling the passlock system. If it starts then all you have to is drive down to the dealership and get yourself a new key made.