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: What is the recommended tire inflation pressure?

It is very important to always have your tires properly inflated. The proper tire inflation pressure is located on the Safety Compliance Certification Label or the Tire label, which are on the B-Pillar, near the door latch, or on the...

Q: How to reset the ECM?

Hi, thanks for writing in. After the computer is scanned and all the codes are documented and diagnosed to find the cause of the problems then the scan tool can be used to clear the codes and ECM monitors. Once...

Q: How do I test my fuel pump shut off switch to see if it bad?

Hi, thanks for your question. I'd be happy to help. You can do test your fuel pump shut off switch two different ways. The first is using a test light or volt meter back probe connector on one pink wire...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.