Question about Chevrolet Monte Carlo

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02 monte carlo- EVAP code. tried new gas cap & erase code, check engine light back on w same code. how can i diagnose the system?

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  • 5 more comments 
  • Anonymous Oct 28, 2008

    Where is the evap canister located on a 2001 monte carlo SS?

  • sameer6 Jan 09, 2009

    2001 Monte Carlo EVAP code.

  • Anonymous Mar 19, 2014

    check engine light on. coded small evap leak

  • Anonymous Mar 24, 2014

    evap system releasing gas fumes replaced purge valve and gas cap what next

  • Anonymous Mar 25, 2014

    Can't pass inspection,has multiple codes. trying to diagnose problem.

  • Anonymous Mar 27, 2014

    codes 201 and 301 showed up on the scanner

  • Anonymous Mar 31, 2014

    Check engine light shows Evap code

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Hi there, you see todays cars are so emmision friendly that not even the vapors from your tank can be released into the atmosphere so what they have done is all your vapors are put into a charcoal canister to absorb the vapors and the next time you start the car it has a purge solenoid open and burn the vapors off. if you look around the intake youll see a hose with a green cap follow it back to the charcoal canister and while your doing that just check the hoses and the hoses around the canister to make sure there is no holes or cracks in them and then follow the hose from the canister to the gas tank. if every thing looks good then i would replace the purge solenoid.

Posted on Aug 28, 2008

  • steven bruce Aug 30, 2008

    hi there again, sorry about not getting back with you sooner but my computer jammed up on me i finnaly got it going now on the evap system dont worry its not complicated at all first check from the fuel tank to charcoal canister, its just a solid plasic line that goes from the top of the fuel tank(which you wont be able to see without dropping the tank) just check for cracks or unplugged tees or elbows at the canister. 10 to 1 Im betting that the purge solenoid is bad its usually located by the canister or it on the intake with a two wire connector. now another little place you might check is on the intake. you will see another plastic line coming off the intake going to the purge solenoid it will have a green cap (test port for evap system) see if the line just came off the intake . now you can by a pressure gauge and test it there but im pretty sure youll spot the problem before it gets that far

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1 Answer

What is code PO446 on a 2001 monte carlo ?


that is EVAP failure.
buy a new gas cap and reset the codes. drive,
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the FSM covers this
so does ALLDATA.com , log in and read.

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You need to diagnose any codes you get
& smoke test the evap system, to find a
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Seldom does throwing on parts with a name similar
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Codes have nothing to do with installing parts

Clearing codes, clears all data needed to diagnose
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Then the Evap System leak wasn't the gas cap

Pays to just diagnose the system first & replace
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