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f150 p2020

  

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hi scotty i just got me an f150 2009  4.6 xlt with 80k miles it works great and gives me 15mpg on the highway.   it has a few mysterious electrical thing like mirror switch doesn't work and even though i replaced the blow motor  relay it stop doing intermediate speed so ac only works on max. check engine light read p2020 mechanics all have their own theory . any ideas?  

ps; i love your videos


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try to post each question separately.

medium speed will be a resistor, not relay

from what I'm reading it'll need a new intake manifold for the p2020, but if it runs fine they I'd leave it.


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