2004 Hyundai Sonatai V6 hard to start after refueling...and stalls before it finally operates properly...Car has 100K milkes

On the left front shock tower, there will be a little square box with a rubber cover on top. Press down on the center of the rubber cover to reset the switch, and you should be able to start your car.

run the fault codes and look for a problem in the canister purge valve/solenoid

Hesitates after refueling, have someone check the FPR, Fuel Pump and Filter.
If you have junk in the tank, it will circulate when you add fuel to the system.

Hope this helps

Yes, the PCSV (Purge Control Solenoid Valve) is usually the cause of difficulty in starting the engine after refueling. The 2004 Santa Fe came with three different engines and this valve is located in different places on each engine (2.4 (4 Cylinder), 2.7 V6 and the 3.5 V6). Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop & owner manuals, service bulletins, campaigns, illustrations and procedures, etc

You probably have a PCSV (Purge Control Solenoid Valve) stuck open/leaking. Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop & owner manuals, service bulletins, campaigns, illustrations and procedures, etc

there should be a valve that prevents the fuel from traveling back dow the fuel lines when the vacum is lost. make shure this is working properly

One problem at a time please. No. 1!. Your description points to a faulty Purge Control Solenoid Valve (related to engine stall after refuel). The second problem could be caused by 'hot spots' in the combustion chamber -- however, the only way for any fuel to enter the combustion chamber after the KEY is turned OFF, is through the Purge Contro Solenoid Valve - it's the only component directly related to the problem you describe (unless you (or someone else) has modified the engine in some way other than original manufacture's design. Solution (provided no modifications have been performed), replace the Purge Control Solenoid Valve.

Your ECM may have a poltergeist.

hi there, i have a 2003 sonata and my car did the same. it stalled and the engine light stayed on but managed to get going again. i took it to Hyundai and it was the crank angle sensor. it needed replacing at NZD180.00 with 3 hours labour to do it. evidently they remove the front of the engine and cam belt etc. the workshop at Hyundai did it and charged 3 hours, not sure if that was excessive or not.