Car runs rough for 5 minutes after filling gas tank.

1996 VOLVO 960

135 MILES • 6 CYL

CHATO

MEMBER
1 POST

I have a 1996 Volvo 960 wagon. Every time that I get gas, for about 5 minutes afterward, the engine runs as if the fuel mixture is off, the engine misses, runs roughly and feels like it might die when I am at a light or the engine is idling. My mechanic has not been able to figure out what it is. I believe it is related to the pressure in the gas tank because after 5 or 10 minutes of driving the problem disappears and I don't have it again until I get gas and the gas cap is removed.

Jan 12, 2011 at 5:45 PM

RASMATAZ

✓ASE Certified Mechanic
75,992 POSTS

Do you have a check engine light and when was the last tune-up?

Engine running rough or misfiring can be cause by the following:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

Note: If it doesn't apply disregard it-

Jan 13, 2011 at 1:34 AM

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