Question about Ford F-150
The detonation (pinging) is an indication that the fuel/air mixture ratio is out ( lean) or the timing is wrong (too far advanced). The mixture is set by both the HO2S sensor and the O2 sensor so check them out for failure. If it is a V engine check out all 4 units. The timing may indicate a faulty ignition module so look in that area for the hard starting. There will be codes stored but you may have to get an expert to connect the data link correctly top get the CPU to read out Different systems, different leads ,different pin connections
Posted on Nov 22, 2014
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Posted on Jan 02, 2017
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