Question about 2002 Saturn Sl
Said 'Small" evap system leak and I just recently (last 6 months) replaced my gas cap and also the O2 Sensor in the front under the hood I replaced(meaning I did it myself not had someone else install it) within the last 9-12 months max. The paper from the emissions place says "PO133 O2 Sensor Circuit Slow Response (Bank 1(1) Sensor 1) and PO442 Evaporative Emission Control System Leak Detected (small leak). Please someone help walk me through how to fix these things quickly and cheaply. I know I need a new car but that isn't an option right now and spending another 100 bucks on this car isn't an option either. I think the computer needs to be cleared?? but I don't know how to do this.
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Posted on Jan 02, 2017
SOURCE: emissions failed
a small evap leak can be caused by many things, and correct in most of the time it is the gas cap. i would try replacing that, and having the cel cleared. but as i said if there is another leak somewhere in the system such as the filler neck or any of the multiple solenoids and vacum lines, that will need to be taken care of as well.
Posted on Dec 11, 2008
Although I recommend you buy a Haynes service manual for your Dodge, I think you will find the canister attached to the firewall or one of the fender wells.
Most of them look a lot like an overgrown spam can and it will have two connections on it.
Posted on Mar 06, 2009
You can generally find a vaccum leak by pressure testing the system. Most auto parts stores sell a vaccum tester relatively cheap. Or you can take it to a shop and they will pump your sytem full of a uv sensitive die and then use a black light to find the leak. If it says vaccum leak at engine on the vent solenoid then all you need is the schematic of your vaccum system to find the solenoid and you should find your leak theoretically.
Posted on Apr 04, 2009
Usually the source of the leak is the gas cap (either loose or defective) but if that doesn't apply to your issue then the canister is next to the gas tank.
Posted on Jun 09, 2009
SOURCE: REPLACEMENT (EVAP)
THERE IS A PURGE VALVE ON TOP FRONT OF INTAKE AND A VENT VALVE IN REAR ON DRIVER SIDE NEAR GAS TANK.GM HAS A UPDATED REPLACEMENT VENT VALVE WITH HOSES FOR $300. PURGE AND VENT VALVE WORK TOGETHER TO VENT FUEL VAPORS FROM GAS TANK.
Posted on Jan 28, 2010
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