Car Stalls While Driving
Having your car die in the middle of driving is genuinely scary — and it usually means something critical has failed.
A car that stalls while driving is losing either fuel, spark, or air at speed, which is more serious than stalling at idle. Common causes include a failing fuel pump that can't keep up with demand, a bad crankshaft position sensor that causes the engine to cut out suddenly, or a faulty ignition module. You may notice the engine sputters before dying, or it may shut off with no warning at all.
If the car stalls and won't restart for a few minutes but then fires up again, a failing crankshaft or camshaft position sensor is likely — they can cut out when hot and work again once they cool down. A fuel pump that's dying often causes sputtering at highway speeds before eventually stalling completely. An electrical issue like a corroded ground wire or loose battery terminal can also kill everything suddenly.
A car that stalls while driving needs to be looked at where it sits — not driven across town hoping for the best. Ez Mobile Mechanic is a mobile mechanic in Jacksonville who comes to you, wherever your car ended up. We'll diagnose the problem on site so you don't need a tow. Anywhere in Northeast Florida, call (904) 788-7272.
Frequently Asked Questions
What sensor can cause a car to stall while driving?
The crankshaft position sensor is the most common. When it fails, the engine computer loses track of engine timing and shuts off fuel and spark.
Can a bad fuel pump cause stalling at highway speed?
Yes. A weak fuel pump may keep up at idle but fail to deliver enough fuel under load at higher speeds, causing the engine to stall.
Still not sure? Call a real mechanic.
(904) 788-7272 — $1/min