SOURCE: 2000 grand caravan won't stay running when I stop
When you try to start it back up, have you tried very slightly pressing on the accelerator and trying to start it? If it does start, but dies as soon as you let up on the pedal, dollars to donuts the IAC (idle air control) passageway is blocked or the IAC motor is bad (should throw out a check engine light though).
Check and clean Idle air control valve. Make sure its responding to signal as well. Also make sure ther are no vacuum hoses disconnected. This may not be a "cure" but it's a good place to start.
SOURCE: car wont stay running unless foot is on the gas
Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor, throttle positioning sensor, and the MAF and MAP sensors. Best diagnosed by using an OBDII scanner to scan for codes. If no codes are present I would then check for the pressure coming from the fuel pump to make sure it is still functioning.
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