2000 Hyundai Sonata Logo
Posted on Feb 14, 2009
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Hyundai Sonata 2000, sluggish to start only after fueling

Battery is strong, starts immediately except when I refuel. In that case, the car is sluggish in starting, strange to me, maybe someone has a clue. Thanks.

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  • nervousmark Mar 04, 2009

    1999 Sonata is hard to start only after refueling. Actually starts to sputter and will die once gas cap is removed. Requires about 10-15 seconds of cranking to start. Problem goes away after about 5 minutes of driving and starts fine even when cold until next refuel. Have checked many forums and techs all basically say I'm nuts and start guessing things like water in the distributor or starter problems. It IS weird, I'll admit, but the problem happens just as I've described and it appears that numerous owners report the same problem. SOMEBODY has to have figured it out by now.

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  • Posted on Jun 28, 2009
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Purge control solenoid valve is suspect. After refueling, the charcoal canister can become 'saturated' and this valve (if stuck OPEN) sucks air through it and can draw raw fuel into the intake manifold creating a 'flood' condition.




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1) First of all check the power and voltage to the battery.with meter it will show exact 12 volt if the battery is charged.if the voltage is less get the battery charged at local auto repair shop.if the battery is internally drained and not getting charged then its time to replace the battery.
2) When you crank the car do you see spark coming at the spark plug? if no then its time to check the spark plugs and coil pack.if the spark plugs are not worn out and looks new then its time to check coil pack.the spark plugs gets power to spark from coil pack.
3) The other thing to check in this case is the starter solenoid of the car.if the battery is charged and you start the car then it gives power to the starter to start the car.but if starter is faulty or not connected properly then car will not start.
4) The other thing to check in this case is fuel in the car.if there is fuel in the car then check the blockages in the fuel pump if the fuel pump looks proper then check the fuel filter above the fuel pump.
5) If all the above possibilities mentioned above checked out OK/perfect then its a electrical issue and the wiring's in the car needs to be checked.the car gets power from the battery to get started.so the wires from battery needs to be checked one by one.
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