Question about 2000 Chevy Astro - Passenger van, with factory roof rails - Base Rack System

1 Answer

Engine starts, then shuts off. Where should I look?

Many new parts including fuel injectors, mass air flow sensor, distributor cap and rotor, and many more. It has good fuel pressure. It has spark while engine cranks.

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  • Paul Marks Mar 22, 2015

    is ther good spray in the Injectors?or is dripping ?check to see if ther is Hose Off sounds like hose off then it will die How many Km,s Does it have ? check the timing maybe ?does it backfire ?

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  • 252 Answers

Does it run good for the brief period after it starts? Is the vehicle new to you? Does the security light come on after it starts?

Posted on Dec 02, 2014

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  • Harold Clark
    Harold Clark Dec 03, 2014

    It runs smooth for about a second or two , then shuts off. I am the original owner. I don't know about the security light, but the battery had been disconnected for a period of time for servicing the vehicle before reconnecting the battery to attempt to start it.

  • Rocguy Dec 03, 2014

    I suspect your problem is with GM's Passlock II security system. In your case, it may just need a relearn. Here is a link showing that.https://www.youtube.com/watch?v=_njAVpk4... In my brothers 98 Chevy Malibu, I actually had to do a bypass because he kept having problems with this. It involves measuring resistance and soldering in matching resistors. Maybe after watching the video, you can see if your security light is acting the same way.

  • Harold Clark
    Harold Clark Dec 05, 2014

    The security light comes on when starting the van, but it does not flash. When I turn the key all the way to start as in the video procedure, it will start again right away, but it shuts off immediately just as it did the first time and I can continue that as long as the battery holds out. Are there any sensors or controls that cause the computer to shut down the engine if it does not receive the signals it is looking for?

  • Rocguy Dec 06, 2014

    I wouldn't worry about the security light flash thing. I really think the passlock II is messing you up. That is the control that will shut things down if it doesn't see the right resistance. It's pretty easy to bypass and costs almost nothing if you can do it yourself or have a friend. Here is a link to how to do it. Don''t worry about it not being the same vehicle. The procedure should be the same once you locate the correct wires. That is easily done also. They will be coming down from your key, They are not very big around either. Don't hesitate to ask if you have further questions.

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Try a few if these ideas...

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