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It just completely turns off? No sputtering, chugging? That’s totally weird. A modern car like that will tell you when something is wrong to cause that. like a lean code P0171, or misfire P030x.
It could be a vacuum leak, but if it gets bad enough your car will run like crap all the time, rough idle, etc.
Maybe a problem with the PCM? You’d have other issues though.
A bad crank position sensor. That won’t necessarily throw a CEL, but can cause that issue.
If none of those sound right, take it to a mechanic and have them drive it to get a diagnosis.
[color=orange][i]It just completely turns off? No sputtering, chugging? That’s totally weird. A modern car like that will tell you when something is wrong to cause that. like a lean code P0171, or misfire P030x.
[/i][/color]Not really..
Just had a Monte Carlo that would randomly shut off while driving down the highway.
No codes, no CEL..
Turned out to be a faulty ignition switch.While driving it runs smoothly no problem, but when i stop if it doesnt shut off it feels jumpy like it wants to move forward or something. Before this happened there was a CEL it was a bad coil. After a few weeks after replacing coil the battery light came on. Had to replace alternator. Now this is the new problem im facing.
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