Hi,
Hope someone can help me out. I've got a '99 Chevy Venture that will start then stall within 2-4 seconds..no misfiring, no sputtering, just literally die.
The problem is..it's only intermittent. For example; I could start it now and it'll work perfect. 10 minutes or 2 days later..I could start it and it'll die within 2-4 seconds. There's no rhyme or reason to it. Hot or cold starts don't seem to be part of the problem.
Thought perhaps it needed a tune up, maybe had some dirt in the gas..did a fuel / air filter change, injector cleaning. Took off the main line and checked for fuel pressure while turning the key on ( lots of pressure in the line ). Checked for vacuum leaks, cracked wires, fuses..
I'm absolutely baffled.
( had a code reading done on it, came up with a bank1 sensor2 reading..so it's been replaced without fixing the problem ).
Any help would be appreciated.
Does the security light flash or come on steady ? Have a lot of thing's on your key ring ? Other key's with transponder inside , Do you know what a transponder is ?
The Ignition Key (Transponder)
The ignition key for PASS-Key® III equipped vehicles is a typical ignition key using a transponder pellet located in the end of the key. The ignition key transponder value is used in order to determine if a valid ignition key is being used in order to start the vehicle. When the ignition key is inserted into the ignition cylinder and the PASS-Key® III module detects the ignition voltage (the ignition switch is in RUN or START) the module measures the transponder pellet value. The PASS-Key® III module validates this value and performs the following functions:
• If the ignition key transponder value is valid, the PASS-Key® III module performs the following (system enable) functions:
- The PASS-Key® III module sends a pulse width modulated signal to the PCM to request fuel enable.
- The PCM enables the fuel system.
- This function enables the engine to start.
• If the ignition key transponder value is invalid, the PASS-Key® performs the following (system disable) functions:
- The PASS-Key® III module does not send the fuel request signal to the PCM.
- The PCM does not enable the fuel system.
- This function does not enable the engine to start and run. The engine may start and then stall due to residual fuel in the fuel system.
The PASS-Key® III module can identify up to 10 valid key codes to operate the vehicle.
Having excess thing's on you ring , including other PASS-Key® III keys , can confuse the computers .
SOURCE: hard start
Its your fuel pump.I had the same plomblem not too long ago.I was spraying either in to start it.I have a 97 chevy truck witch requires 65 psi to start and 55 to run properly.You need to find out much psi you need to start it.You can probaly look in your manual or just make a few calls.My truck had 55 psi and it ran fine i just had to get it running first.Good luck.I wonder if that fuel pressure regulator was a waste of time like it was for me.
SOURCE: Help w 1994 chevrolet truck
disconnect the batt. is your fuel pump running check fuse listen for it
SOURCE: 2000 chevy venture doesnt start
Not the IAC, or MAF, or 02
Does the Van Crank over?
Have you checked the IGN Relays? 1,2,and 3?
How did the Battery test out?
Anything below 11.9v battery is dead.
So I suggest that you do not throw any more parts and check the battery again.
SOURCE: 1992 Chevy S10 blazer 4wd (4.3 TBI engine code Z).
Replace ECM
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This will help.Thanks.Helpmech.
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My problem ended up bing the Pass Key System. Needed to be replaced. Reciever went bad. Hope this helps
could be the fuel regulator its located on top of the engine in front of the coil packs
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