Engine stalls when attempting to accelerate

2006 SUBARU IMPREZA

214,850 MILES • 2.4L • 4 CYL • TURBO • 4WD • AUTOMATIC

SHANEO415

MEMBER
1 POST

Engine stalls used to stall while idling but I’ve replaced coils and spark plugs but now it isles fine but stalls once I try to accelerate. Crankshaft sensor?

Jun 1, 2020 at 9:07 PM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

I attached the info on the crank sensor but this is most likely not the issue causing the vehicle to stall on acceleration. That is normally an air fuel ratio issue. Meaning there is not enough or too much fuel and once you introduce more air with opening the throttle, it stalls because the fuel doesn't match that amount of air.

Let's start with checking fuel pressure and then if you have a scan tool that can look at live data, we would need to see what the o2 sensors are doing.

Clearly this issue could be the crank sensor but I have not seen it cause this type of failure so I would rule out these other things first and go from there. Thanks

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

https://www.2carpros.com/articles/engine-stalls

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Jun 2, 2020 at 12:54 PM

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