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Where can you find a vacuum hose diagram for a 2002 f150 54l v8 My AC switchs between vents an defrost vents .I need to check the vacuum hoses but not sure where all are?
Wiki User
∙ 13y ago
It is most likely the EATC module that controls the temperature in the vehicle. About $500 at dealer. I advise you to try and fix this problem your self. I had the same problem and ended up fixing it within 30 minutes and less then $2.00. This may or may not work for you and it will not hurt to change the parts either way.
It seems that the O rings found in the control unit dry out or even crack over time. This is what needs to be replaced to eliminate the vacuum leak.
Wiki User
∙ 13y ago
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