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Troubleshooting over the internet usually leads to more questions:
When the car dies will it immediately restart and run for a few more seconds ?
Will the car take any throttle once it starts ? Does it act differently if you hold the throttle pedal to the floor before you try to restart it ?
If you pull a couple spark plugs right after it dies, do they smell like unburnt fuel ?
Is there a fuel pressure test point on the fuel rail ? My '92 has one between the first and second injectors. O'Reilly Auto Part will rent you a fuel pressure gauge (with a bunch of adapters) for a few bucks.
Hook up a fuel pressure gauge (be careful about fuel spray) and see what it says when you turn the key before you start the engine, when it starts, after it dies, after the key is turned off.
The fuel pressure should be 43 psi when it is running with the vacuum line to the fuel pressure regulator disconnected and plugged. Reconnecting the line should drop the pressure by 9 psi. 20 minutes after the key is turned off the pressure should be 15 psi. So sayeth Bentley.
If that all checks out, have you checked the accordion tube between the air filter and the throttle body for cracks or wear ? Is your air filter box full of mouse nests ?
If that all checks out, I'd still be curious to see what happens to your electrical system voltage as the car starts and tries to run. A dead battery is not necessarily a bad battery.
If you don't have a voltmeter, they are very handy and a decent one is only $30 or so. Digital is the easiest to use, just don't by a $10 cheapie.
Greg
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