Toyota Corolla Emissions Issues After Fueling – Car Stalls?

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Toyota Corolla Emissions Issues After Fueling – Car Stalls?

Hi all,

I’ve been having a strange issue where my Toyota Corolla stalls after filling up at the gas station. It seems to be related to emissions, as I’ve noticed this happens after fueling up, and it doesn’t happen when the tank is near empty.

Has anyone experienced this o r know what could be causing it? Could it be a problem with the EVAP system o r something else?

Thanks for any input!

Sirat Ul Jinan asked on 29 Jan 2025 16:22:29 pm

1 Answer

26 views |

Car Mechanic Expert - on 29 Jan 2025 16:27:04 pm

Hey,

It sounds like youre dealing with a problem related to the EVAP Evaporative Emission Control system. The EVAP system is responsible for preventing fuel vapors from escaping into the atmosphere and is involved in fueling processes. Here are a few things that might be causing the stalling issue after filling up:

Faulty Gas Cap: A loose o r damaged gas cap can cause pressure issues in the fuel tank, which may lead to stalling after fueling. Check the gas cap to make sure its sealing properly.

EVAP System Leak: If there is a leak in the EVAP system, it can affect the pressure inside the fuel tank, causing issues after filling up. This could be due to a cracked o r faulty hose, purge valve, o r charcoal canister.

Purge Valve Issue: The purge valve controls the flow of fuel vapors from the EVAP system to the engine. If its malfunctioning o r clogged, it can cause a buildup of pressure and lead to stalling. This is especially noticeable when the tank is full, as the pressure is higher.

Vapor Lock: When you fill up, the fuel tank is at a higher pressure, and if theres a vapor lock in the system, it can cause stalling o r hesitation right after filling.

Fuel Tank Venting Issue: If the venting system for the gas tank is clogged, it can cause a vacuum o r pressure buildup, which may trigger stalling.

A mechanic can perform a diagnostic test on the EVAP system to pinpoint the exact issue. You may need to replace a faulty valve, hose, o r other components of the system.

Hope this helps!