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Re: MAF Sensor Maintenance
I don't think I explained it right to Larry, I believe his check engine light was caused by too much dust on the MAF sensor. Oil is a problem as well but his had a lot of dust on the sensor.
The problem occurs because some aftermarket filters are known to have weak seals or even worse very porous filtration. IMO K&N has both depending on model the seal actually leaks too.
I was a huge fan of K&N a long time ago; no one could tell me anything negative about them. But after years of having check engine lights come on in my Tacoma after almost every off road trip. On top of that the TTORA forum it became a very hot topic because a number of other Toyota drivers had the same problem. It became the consensus that the filter was causing the problem.
We should have taken pictures of Larry’s air box pass the filter it was a perfect example of everything that can go wrong with the aftermarket filters. He had dust all the way up to the throttle body and all over the inside of the plastic box. His MAF sensor was coated in dust as well throwing his check engine light.
When I was evolved with the TTORA group we actually had a Tacoma stop running because of his MAF sensor covered in dust. He was running the Full K&N filter unit. I use to carry a can of electronics cleaner with me when I went off road JIC.
I know some people here love there K&N's, I'm sorry these are just my experiences.
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