Recently my car would stall randomly, i would drive and then the car would seem to hiccup or try to stall, then sometimes it will completely stall. some days this doesnt happen at all, then like this morning it stalled completely when warming up the car than 4 times it stalled while driving. i have no idea whats going on with the car, i own a 2004 chevy impala 3.8
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The problem could be plugged up catalytic convert it is related to tune up.One more thing fuel filter too. Check auto zone if they have anything to burn out catalytic.When you change with standard catalytic you will have code PO420 will be a headache!!!!!!!! 80% cars have this problem Think twice before doing anything.
does this model have an ETS on it? Electronic throttle system. I could need a new throttle body. Sometimes the software goes bad and it will give the symptoms you described.
You have a bad crankshaft position sensor. When the thermostat opens on warmup, the auxiliary air pump starts up momentarily which causes a quick dip in battery voltage and drops the output from the crankshaft rotation sensor. the computer thinks the engine is not running and shuts down the fuel. If idling, engine will die, if moving sometimes will just hiccup.
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