Question about Hyundai Motor 2002 Sonata

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Once I fill up my 2002 Sonata with gas it's hard to start/cut off

This problem has been going on for awhile and im ready to fix it ! Once I fill up with new gas the car is hard to start and cuts off. It dosent mater if i fill up all the way or 1/4 tank, same problem. once i drive for awhile the problem goes away until i get gas again. Anyone have any input on this please let me know . Thanks

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  • jwwsr01 May 14, 2009

    No the vent for the gas tank is not plugged and the check engine light stays on all the time.

  • Ray Keckeisen May 11, 2010

    have the codes from the car scanned,most major auto part stores will do this at no charge,then get back to me with the codes,otherwise it's like guessing not testing and i dont do that

  • Ray Keckeisen May 11, 2010

    check to make sure the vent for the gas tank is not plugged,also is the check engine light on



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Check your charcoal canister system, and vauucm line going to it and or solenoid valve in line with it, and even !! a good gas cap !? The canister can purge to the intake manifold as soon as the throddle port opens ,allowing extra fuel during warn up and can cause a rich start condistion!

Posted on May 13, 2009


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Sep 19, 2009 | Hyundai Motor 2002 Sonata

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Ya, check behind the drivers rear wheel. There is a black box which contains the charcoal canister, filter, solenoid. You'll need to jack up the car, take that wheel off, mud flap and another plastic section inside the wheel well which will expose the hoses that run in and out of that box. . . . take note where all the hoses go. You'll need to remove the whole thing to get at the filter. The electrical lead that attaches to the solenoid has a unique locking clamp so its difficult to unplug, I opened the trunk and cut the wire where is runs into the wiring harness.(careful to leave enough wire to work with to re-connect it). The filter is hopefully the problem, its only around $10.

Aug 16, 2009 | Hyundai Motor 2002 Sonata

1 Answer

Very very slow filling the gas tank

ya changing the air breather or actualy just cleaning it if its just dirty can 90% of time solve gas filling problems!

Aug 08, 2009 | Hyundai Motor 2002 Sonata

4 Answers

Problems fillng the gas tank 2002 Sonata

i just went through that problem

Evap canister / close solenoid and air filter $211- 230.00 in parts

$675- $71.00 at dealships for this small 30 minute task

If no check engine light Evap canister and air filter - fixxes problem 100 %
note:you may be able to get by just replacing air filter- works

if have check engine- close solenoid and purge solenoid may need replace- you local autozone- like autozone will pull check codes for free

the how to:

Jack car up in rear - behind right rear tire - canister -canister close solenoid & air filter are located in a plastic box with metal strap and one bolt.

Unscrew bolt everything drops down the EVAP CANISTER is held to plastic box by wirer tie . Remove wire tie and solenoid connection.
There is a small metal wire clip the holds the solenoid electrical connection together with a flat screw driver pry up the wire clip , off is okay too , will go back on.

Once you have done all that you have full access there are i believe from memory 3 rubber hoses with clips ......Mark hose connects very important mark the hoses way the going on evap canister with color tape .

Next, remove whole assembly- the solenoid and air filter will come with the evap canister.

Now that have the whole assembly move to your work bench
look to see how the soleniod hook up to the canister and the air filter - now, disconnect the hose to black solenoid and remove the air filter which hook to solenoid and solenoid at same to ......

Next seperate the the solenoid and air filter- you should be air to put your mouth on solenoid and blew air in one hole and out the other- this solenoid is noramlly open- if air dosen't go threw is stuck closed and must be replaced.

same with air filter- this air filter are know for get plugged and should be replaced every 30,000 miles.

Also note: over fill you gas tank , at fill up - can cause the Evap to get liquid gas inside which cause the chorcoal in the filter to swell up and plyug the system up.------ you should when fill up stop pump gas after the auto pump click off on normal work tank and not try to top off you tank.

note: check with your deal for exact wieghts
weigh the evap canister - six pound - replace it- new one is about 4-4.5 pounds - it is just best to replace .The evap holds gas fumes then send to engine so that dosn't vent to

All parts are dealships only -

This is easy fix and normal, for gas fill problems

canister Evap 161.00
canister close solenoid 43.00 may or may not be used
air filter 7.00

not used in this fix- check engine fix use these parts
sensor price ?
purge valve 39.00
canister close solenoid 43.00

Feb 23, 2009 | Hyundai Motor 2002 Sonata

1 Answer


I had same problem with my 2002 Sonata. Turned out to be Ignition switch relay under the hood. $22 part from dealer. Check ignition fuses under hood also.

Oct 15, 2008 | Hyundai Motor 2002 Sonata

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