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I was recently told (by the dealer) that I need a oxygen sensor and an airflow meter. Is there more than one o2 sensor on the car('94 2.0L 4 cyl) and if so how do I determine which one to replace? Also how hard is it to replace an o2 sensor & airflow meter? Is it a DIY job? Pleas help. Kevin
 

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what make him come to the conclusion that you need these items???

pull your malf codes and see for yourself.

but on the 4, there is only 1 O2 sensor, its relatively easy to replace...

and the MAF is pretty easy too... just not so much on the wallet...
 

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Yep, 99% chance you don't actually need a mass air sensor. At worst, you might need to clean it. Get some brake part cleaner and gently spray the sensing elements a couple of times. Let the thing thoroughly dry and put it back on the car.
 
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