# 2021 Subaru Legacy - Erratic behavior - stalling

**URL:** <https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045>\
**Category:** Maintenance/Repairs\
**Tags:** subaru, engines\
**Created:** [September 24, 2023, 6:00pm UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045 "2023-09-24T18:00:34Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![AneezMom](https://avatars.discourse-cdn.com/v4/letter/a/f475e1/32.png) [@AneezMom](https://community.cartalk.com/u/AneezMom)\
**Post date:** [September 24, 2023, 6:00pm UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/1 "2023-09-24T18:00:34Z")

</div>

Car was running fine yesterday. Today, I started car with no problem and within 1/4 mile from home, it suddenly had no fuel and I pulled over to curb. I shut everything down. I again restarted the car and within seconds of accelerating, same thing occurred. I had more than 3/4 of tank of gas in the car. Car only has 7,000 miles on it. I waited about 10 minutes, restarted the car and was able to drive it back home. Not sure if I should drive anywhere with it.

---

<div class="post-metadata">

**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/48514_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [September 24, 2023, 7:24pm UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/2 "2023-09-24T19:24:42Z")

</div>

> [@AneezMom](#):
>
> Not sure if I should drive anywhere with it.

I suggest that you drive directly to the dealership tomorrow. You don’t need to know what is causing the problem. All you need to know is that the car is covered by multiple warranties, and it is the responsibility of the dealership to diagnose and to fix the problem.

Please report back to us regarding the outcome at the dealership.

---

<div class="post-metadata">

**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [September 24, 2023, 7:32pm UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/3 "2023-09-24T19:32:10Z")

</div>

A bad crank sensor will cause an engine to shut off, and then restart.

But it only does this so long before the engine doesn’t restart again.

> **[Bad Crankshaft Position Sensor Symptoms & Problems](https://www.1aauto.com/content/articles/bad-or-failing-crankshaft-position-sensor-symptoms)**
>
> Problems with the crankshaft sensor will often present as problems with engine timing. If you think your sensor has failed, here are some common symptoms of a bad crankshaft sensor that can help you in determining whether or not it has failed.

Tester

---

<div class="post-metadata">

**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [September 24, 2023, 11:06pm UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/4 "2023-09-24T23:06:48Z")

</div>

> [@AneezMom](#):
>
> it suddenly had no fuel

Do you mean the fuel gauge suddenly and for no reason read empty, when just before it read 3/4 tank? If so, that could also be a battery/charging system problem. The safest method to a fix is to have your Legacy towed to a dealership.

---

<div class="post-metadata">

**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\
**Post date:** [September 25, 2023, 1:01am UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/5 "2023-09-25T01:01:07Z")

</div>

Another one for call the dealer, and if you say it keeps stalling out then the dealer might even tow it under warranty, if not your ins might…

---

<div class="post-metadata">

**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [September 25, 2023, 3:08am UTC](https://community.cartalk.com/t/2021-subaru-legacy-erratic-behavior-stalling/193045/6 "2023-09-25T03:08:18Z")

</div>

> [@AneezMom](#):
>
> Not sure if I should drive anywhere with it.

A quarter mile at a time?

This could be an electronic throttle control problem disabling the throttle. Before calling the tow service, check for an obstruction on the accelerator pedal.

 ![20230210_131608](https://global.discourse-cdn.com/cartalk/original/3X/a/0/a0cd214ab37c36099ba4d488b486c8b92be0edef.jpeg)
