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throwing evap sys code, help please

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Old Jul 23, 2004 | 06:40 PM
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Default throwing evap sys code, help please
ok i threw an evap code, said evap system sensor low imput or something like that i forgot waht it said and what the code was so sorry about that, just wondering if anyone could help me based on this.
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Old Jul 23, 2004 | 09:11 PM
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Hard to say without the exact code # + evap codes can be fun to diagnois. Did you get the "make sure the gas cap is tight" yet? Has the gas tank ever been out B-4?
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Old Jul 24, 2004 | 01:33 AM
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yes the cap is tight and no the tank has never been out, but the motor and tranny were just out recently
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Old Jul 24, 2004 | 02:27 AM
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i get the code and the tank has been out.
what should I be looking for????
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Old Aug 19, 2008 | 09:38 PM
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I have the same exact problem mine in throwing code PO 49 I believe tranny was recently out. Anyone ever gone through this? Yes the gas cap is tight
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Old Aug 19, 2008 | 09:42 PM
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Is the gas cap gasket rotted out?
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Old Aug 19, 2008 | 09:57 PM
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Took it off cleaned the area around it doesnt look busted or rotted. I am **** out of ideas.
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Old Aug 20, 2008 | 01:06 AM
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Hi, Get a new cap to rule it out? Dave
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Old Aug 20, 2008 | 04:47 PM
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Sounds like a god starting point
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Old Aug 20, 2008 | 04:57 PM
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Low input would be an electrical problem not a evap leak. You might check the purge valve solenoid or the vent valve solenoid (depending on which code) for proper resistance and be sure the pink wire to each has 12 volts with engine running.
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Old Aug 20, 2008 | 06:37 PM
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P049 isn't an OBDII code, EVAP should be P0440, P0442, etc. Be sure of the code first - get it scanned again if you have to.
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Old Aug 21, 2008 | 10:07 PM
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Im positive the code is P0449 I didnt realize I had a typo before. Are those solenoids your talking about on top of the gas tank?
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Old Aug 21, 2008 | 10:35 PM
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I have a code similar and I noticed lately when I take the gas cap off it releases pressure. Do I need a new cap or is a valve sticking
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Old Aug 22, 2008 | 06:52 AM
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PO449 is an electrical fault (not an EVAP leak) for the tank vent solenoid. The solenoid is bad (electrically) or the wiring is open (busted).
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