had 2 replace head on my 96 f-150 and the iac valve screw got turned now computer reads running too lean on o2 sensors what can i do 2 get problem solved


Asked by Dec 13, 2015 at 01:08 PM about the 1996 Ford F-150 XL LB

Question type: Maintenance & Repair

1 Answer


I guess you may be getting a P171 and 174 trouble code. There is a bucket full of causes for these codes. Diagnosis is fairly easy with a live data scan tool. May be worth your while to have a shop scan the system to determine the cause.

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