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2002 Hyundai Sonata Question: how to tell if evap vent VALVE IS BAD

 

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trskok, Deer Park, WA, March 28, 2014, 19:34
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removed from canister but unable to get movement when battery applied

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  • Answer #1

    G. T. Service Center (4191 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG March 28, 2014, 19:37
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    Well if you are testing it correctly and it isn't working, the writing is on the wall. :-)

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    trskok, March 28, 2014, 19:58
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    Not sure if I am testing it correctly. I applied battery power to the terminals and nothing. I think I read somewhere that if you could blow through the tube without resistance, it was ok. I know that some valves need to have pressure applied to the vent to trigger the solenoid.

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    ProfessorG, March 28, 2014, 20:01
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    That valve works on a vacuum system, no pressure assist needed for operation, where's your ground?

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  • Answer #2

    ziptie12 March 28, 2014, 20:02
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    Other bit of info to find out (I don't have Hyundai technical info handy) is , if it's a 12 volt or 5 volt signal. If you apply 12 volts and it's designed for a low voltage signal , then you will fry it right then.

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    ProfessorG, March 28, 2014, 20:08
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    That's good information, it's 12v on this, computer grnd. Thanks Bro. Hope he didn't put 12v to the ground, ooops

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  • Medium-star Best Answer
    pushrod March 29, 2014, 03:49
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    I use a scanner and select 'functional test' from the evap menu....What code(s) did you have?

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