Can’t pump gas, keeps shutting off

I'm having problems putting gas in my car. I replaced the charcoal canister the purge valve and still wont pump

My car has 150000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi, thanks for writing in. I’d be happy to help. This is an issue that may be related to the gas pump itself or to the car. As you know the evaporation canister vents the fumes to allow you to fill up. There is also a pressure sensor inside the car that detects this. When this is not working properly, this will also cause this to happen and cause the gas pump filler to kick off.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

How to Identify and Fix Common car Problems ?

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Basically, the gas is coming out of the gas pump at a pressure that is too fast for the car to take in. If the air vapors do not get out fast enough and the tube gets covered by gasoline, a vacuum forms inside the nozzle which will automatically switch off the flow of gas into your tank.
Overheating engine

A bad fuel pump may overheat and inadequately deliver gas to the engine, causing it to run hot and turn off while on the road. In this scenario, your vehicle may start back up after overheating and shutting down, only to do the same thing a half-hour later.

Hi There, This is likely related to your EVAP emissions system and something called a purge solenoid. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere.
One of the most common reasons for a fuel tank not filling up is because of a clogged EVAP system. Due to ill-maintenance of the car, debris and dirt can build up in the compartments or hoses of an EVAP system. Therefore, the EVAP gets clogged, unable to trap further fuel vapours.
The fuel tank may build excessive pressure due to a blocked vent. This could cause fuel to spray on occupants or bystanders when opening the fuel cap, potentially causing injury. Additionally, if an ignition source was present, this could create a risk of fire, causing injury and/or damage to property.
If you suspect a blockage, the quickest way to check is to free both ends of the pipe and blow through it. Use your mouth, not a high-pressure air line, which may cause damage.
To shut off the fuel pump in the event of a stall, the PCM on some imports must “see” an engine running signal from the air flow sensor to maintain fuel pump operation. On all other vehicles, the PCM must see a valid signal from the crankshaft position sensor to keep the fuel pump activated.
This hesitation while accelerating can be the result of a number of issues, including something like a clogged fuel filter or even a broken fuel pump. Sometimes, something could also be wrong with the transmission.
Remove fuel pump from tank (avoid letting residual debris fall into the tank). Insert hose into fuel tank and begin pouring a stream of clean, hot water. While water is filling, spray mild detergent in the tank. If opening allows, use a brush to loosen debris from the sides of the tank.
Remove fuel pump from tank (avoid letting residual debris fall into the tank). Insert hose into fuel tank and begin pouring a stream of clean, hot water. While water is filling, spray mild detergent in the tank. If opening allows, use a brush to loosen debris from the sides of the tank.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Cranks and runs rough have to keep foot in gas to keep running. Has new fuel pump and died while driving after pump was changed
ANSWER : Check fuel pressure. There are only three possible explanations: a fault in fuel supply (plugged filter, injectors, etc.); ignition system problems; and air induction including the idle air control valve, throttle position sensor, mass air flow sensor and vacuum leaks including the PCV and EGR systems. If obvious, and easy to check, possibilities do not reveal the fault, the recommended service to request is a rough running diagnostic and the responding certified mechanic will travel right to your location and get this diagnosed and resolved for you. It is also possible that diagnostic trouble codes have set and the mechanic will attempt to retrieve those using an appropriate scan tool. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

Gas pump continually shuts off on winter blend
ANSWER : Hi there. This is very odd and to be quite honest, has us stumped. Winter fuel blends are typically less refined or oxygenated to help fuel burn in colder weather climates. However, even under the best conditions, only about 80% of the fuel that enters the combustion chamber is actually burned. It is possible that the higher levels of oxygen can create more pressure inside the fuel tank, which might cause the pump to ’click’ more often than in summer season (but this is just a theory). The only mechanical component that would cause this is a EVAP canister or purge solenoid that is faulty. I wish we could give you a direct reason why you’re having this issue, but further inspection of your Hyundai would be needed.

The power steering pump seal keeps breaking when pump is replaced.
ANSWER : There may be a restriction in the power steering high pressure line causing an excessively high amount of pressure in the line and the pump. If the belt tensioner for the power steering belt is a manual tensioner that can be adjusted, the tension may be too tight causing a high load on the bearings at the power steering pump drive shaft. You can try having the power steering system flushed to see if this will clear any blockages and be sure to use an OEM quality power steering pump as some aftermarket components are not manufactured as well as the originals. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer inspection of the vehicle in order to offer a more personal diagnosis if your power steering concerns.

Car starts but keeps shutting off when I apply brakes or slow down
ANSWER : Hi, thanks for writing in. Having the precise codes is very important– even if the Check Engine is no longer illuminated. There can be transient codes that have not yet set off the light. The idle air control valve and throttle body may need cleaning. With your mileage clogged fuel filter and dirty/leaking injectors are something to check as well. A clogged catalytic converter is a possibility– that would be most apparent by an inability to build up speed, or take on hills where more power is required. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Why doesn’t car start after running out of gas girlfriend ran gas out of car now won’t start plenty of gas in tank doesn’t sound l
ANSWER : Fuel pumps rely on liquid gasoline for cooling. Consequently, it is recommended to keep the fuel tank at least 1/4 full to prevent the fuel pump from overheating. If the pump is run to the point of being dry, the seal on the impeller can overheat and get damaged. Even if the pump subsequently runs, as you report your does, it cannot develop enough suction to pick up fuel due to the seal damage. That is possibly what has happened in your case but it should be confirmed prior to replacing the fuel pump. In your circumstance the recommended service is fuel pump replacement but if you request that, the responding certified mechanic will do enough tests to confirm that there is no other possible explanation for the failure. There is a quick and direct way to determine if the problem is lack of fuel. Procure a can of "starter fluid" from any department store. Using the material cautiously (it is highly flammable; keep away from flames or sparks), introduce some of the fluid into the intake of the engine while you engage the starter motor. If the vehicle starts and runs briefly, then you know for sure the problem is fuel starvation of course almost undoubtedly caused by the pump failing. Fuel pump replacement can be accomplished in the field, right at your location, if you desire that service.

When refilling gas tank, gas overflows before tank is full.
ANSWER : The most common cause of this type of problem is when the fuel filler neck’s inner tube comes off of the neck itself. You will need to have the filler neck removed to check to see if the inner tube was knocked off from someone trying to get fuel out of tank with a siphon hose and managed to knock the hose off. This causes the tank to not get filled properly and the inner hose can get caught in the fuel sender causing wrong readings.

If you’d like to get this fixed, consider YourMechanic, as a certified technician can help you service your fuel filler neck and ensure that your fuel gauge functions normally. Good luck.

Fuel pump not pumping gas. 1996 Chevrolet Blazer
ANSWER : Hey there, thanks for writing in about your 1996 Chevrolet Blazer. If you hear the pump, but still get no fuel out of the pump, then you have the power and ground backwards in the wiring or they have it backwards on the pump. If you need help having this checked, a certified professional from YourMechanic can inspect the starting issue and let you know what repairs are necessary.

When I crank my car it won’t keep running unless I keep my foot on the gas. As soon as I release the gas pedal my car stops running
ANSWER : The first thing you need to check for in a case like yours is air leaks. Check all the rubber parts and hoses under the hood for good condition and connection. The amount of fuel delivered to your engine is determined by the air that flows in and any air that gets in through a leak without being measured means less fuel being injected. There are of course a number of other possible causes; a failed Mass Air Flow Sensor for example, but they will require special skills and equipment to be examined. You can have this conveniently checked out by contacting Your Mechanic. They can send a technician to your home or office to check out your car and let you know exactly what it will take to solve your problem.