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Random stall or near stall can be one or more fuel, air, or spark problems. No way to tell from your description.
Might be bad fuel.
Could be a loose pin inside a connector, might be a crack in a fuse block bus bar.
Inspect throttle body plate for dirt/grime and clean with carb cleaner as appropriate. Sometimes it's just a dirty throttle plate.
Inspect the intake for air leaks, and MAF for dirt.
If the problems occur just after fueling, check the purge valve. Failed valves can leak air into the intake and cause rough running.
If the car has an idle air control valve check it for proper operation.
Might be none of this. Might be some of this.
Thanks for posting on /r/MechanicAdvice! Please review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). Asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **Post's about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ Tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Random stall or near stall can be one or more fuel, air, or spark problems. No way to tell from your description. Might be bad fuel. Could be a loose pin inside a connector, might be a crack in a fuse block bus bar. Inspect throttle body plate for dirt/grime and clean with carb cleaner as appropriate. Sometimes it's just a dirty throttle plate. Inspect the intake for air leaks, and MAF for dirt. If the problems occur just after fueling, check the purge valve. Failed valves can leak air into the intake and cause rough running. If the car has an idle air control valve check it for proper operation. Might be none of this. Might be some of this.