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The PCM controls the EGR valve, so the EGR position sensor tells the PCM what position the EGR valve is in, so it can control the EGR valve and ake other necessary adjustments.

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โˆ™ 2011-09-15 10:01:59
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Q: What is the purpose of the EGR valve position sensor on a 1994 Explorer XLT?
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