More info from above site:
"There are external air vents on the LAF that must be clear of debris and free of any contaminants to function properly. These vents are built into the body of the LAF sensor. If these vents get clogged, the sensor will not operate properly.
Personal Note - (It may be possible to clean a failing LAF by placing it in a vice (just to hold not to crush) with the sensor facing out and heating the tip with a propane torch. Be careful to not over heat the tip. Keep the tip under 800 degrees to be safe. DISCLAIMER! This is what I've seen/read/heard from other sources)"
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