Q: I have trouble starting the vehicle every time I put gas in the car

asked by on

This is a ongoing problem, I say about 6 months now... I have trouble starting the vehicle every time I put gas in the car. It does not matter if I fill it up or not, just stalls. Only after I put gas in the car I have starting problems, after that the vehicle starts normally with no problems. I changed the purge valve with a new one and it work once with out hesitation. After that, I changed my gas cap with a new one and I'm still having starting issues. I used to push the gas pedal to the floor prior to starting and that worked for a couple months, but now that stopped working. I haven't change my fuel filter as of yet. I'm just afraid I will get stuck at the gas station.

Thanks, Angelo

My car has 218000 miles.
My car has an automatic transmission.

As you may know, this issue is commonly related to the evaporative emissions (EVAP) system which is comprised of a few components, one of which you have already addressed, the purge valve. In some cases, when you have an air leak in the EVAP system, then the manifold absolute pressure (MAP) sensor will not be able to determine the air density, and the mass airflow (MAF) sensor will not be able to correctly determine the volume of air entering the engine. This will lead to an over-fueling or under-fueling situation depending on the size of the air leak and the engine’s operating speeds and load. This could eventually lead to destroying the catalytic converter as well. I would recommend having an expert technician, such as one from YourMechanic, take a look at your car to diagnose your starting and stalling problems.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have trouble starting the vehicle every time I put gas in the car

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Can the repair be done at the same visit as the window not working inspection? Thanks.

Every effort is made to perform the diagnosis and required repairs during the same visit and that is especially doable if the issue is, say, a misaligned window track, high resistance connection in a window control and so forth. If...

Q: Car stalls when put in D or R. Starts fine in P and N, some say it might be bad spark plugs but I'm not too sure what it could be.

Hello. Some diagnostic testing will need to be performed to figure out if there is a vacuum leak, a fuel pressure issue, a failed sensor, or any number of other possible causes. There are just too many possible causes to...

Q: Both the AdvTrac and ABS Lights are on; how do I disengage them?

Hi, and thanks for contacting YourMechanic. First, try checking the ABS sensors for a proper connection. You may need to remove the sensors and clean them off. If there was any moisture on the sensors while the vehicle sat, then...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.