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im actually having the same problem right now, and i was told the sensor is under the intake manifold and both the upper and lower intake will have to be taken off.

The evap system is what takes the gas fumes from the fuel tank and sends it into the intake, usually the problem is with a vacuum hose dry rotting so check them all out , issues with the evap can be difficult to lock down and a smoke test might be needed. Purchase a Haynes or Chilton repair manual for your vehicle. it will take you through about all the DIY procedures step by step.

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โˆ™ 2008-03-19 19:29:28
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Q: My 97 pathfinder was taken in for a check engine test and was told it had a evaporation emissions control failure and a bad knock sensor can I fix these myself and if so how?
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