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I have a 2000 pontiac sunfire and it cranks won't start though I have fuel from the pump I've checked all my fuses but I haven't got to the relays just yet I drove it to somewhere and it wouldn't crank afterward. I have spark and and no air restriction but the injectors don't sound like they are firing think it might be a keyswitch issue but I don't know how it dissables the system on a Pontiac

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  • Cars & Trucks Master
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If you have a propane torch just turn it on with out flame stick it in air cleaner housing inlet without air filter if it starts then yes car is in anti theft mode it does not disable that i know of but requires a scan tool to test it.

Posted on May 09, 2014

  • 6 more comments 
  • jessup burton May 09, 2014

    Propane torch sounds kinda sketchy must say I'm a boat technician my self so I know alot about the engine work but just don't have scan tools for cars unfortunately but if it is in antitheft mode what could get it out

  • Dan Jacobs
    Dan Jacobs May 09, 2014

    It depends on the version 1,2,3 most likely it is version 2 this has a sensor ring around the ignition switch that goes bad usually sets a p1629 code. the propane it how i get bad fuel pump cars into my shop the engine will idle and thats about all it will do.

  • jessup burton May 09, 2014

    i had a chevy malibu that had a passcode lock sensor which was in the tumbler portion of the keyswitch is this similar to that kinda cause i replaced that and that car was showing simliar charactetistics to this one

  • Dan Jacobs
    Dan Jacobs May 09, 2014

    Yes that system is version 1 the version 2 system was a cluster f*** the P1629 code is that the transmitter has not sent the signal to the receiver module so the password has not been sent to the pcm .

  • jessup burton May 09, 2014

    ah is there any way of testing that without a code reader like maybetrying the reprogramming procedure for it or is it just one of the things you have to have a code reader for in order to know cause my malibu didnt throw a code when it did its thing and evidentally these pontiacs are notorious for not wanting to work with most if not all code readers

  • Dan Jacobs
    Dan Jacobs May 09, 2014

    The type 1 used the security lamp to diagnose them not working the type 2 system you will need a scanner to check this problem most code readers do not check the instrument panel codes where it is stored. Yes try a relearn first it may help But my gut feeling is the sensor ring has gone south on you probable in Cabo having a few corona's

  • jessup burton May 09, 2014

    alrighty and well thats a great mental picture im gonna try and reprogram the old one and see what happens and then if it wprks then im just gonna replace it with a new one at the earliest date possible. hope it works really cause it looks like about the cheapeat for the assembly for that is like 109 dollars or so for the tumbler the ring and the locksensor they sell it all as one as where with my malibu is was able to be bought seperately

  • jessup burton May 10, 2014

    Well evidentally you can reprogram the old passcode lock sensor that is in the car either A because its broke or B because its perfectly fine and its something else wish there was a way to find out with having to have a code reader



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