Question about 2006 Ford F-150
Check for OBD Codes first
Then check for a failed battery
Look at module voltage next
Do not remove battery cables or all your data is gone
If you got injector pulse, you should have spark also
Posted on Nov 10, 2014
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Posted on Jan 02, 2017
did you check the injector pulse on that cylinder and it also could be the pcm , i had a taurus and a sable with good coils stop firing 2 cylinders and it was the pcm ,the code it gave was secondary coil but changed the pcm and it worked fine
Posted on Aug 29, 2009
First, check the condition and operation of the following:
1) Spark plugs, leads and coil(s)
2) Air filter
3) Fuel filter and pump operation.
Posted on Nov 18, 2012
SOURCE: 2003 ford Taurus DHOC 3.0
The PCM is located in the rear right corner of the engine compartment, sticking to the firewall:
The PCM can be replaced with a new or used god-working one. In both cases the PCM must be reprogrammed using a Tech 2 tool that costs about $3000. The operation is done at the garage.
The PCM is unlikely causing misfire on a single cylinder. Check wires going to spark plugs. If the coil is getting no 12V on the ignition side check ignition. It is strange that one coil has no power, the engine usually does not start when that happens because the same coil gives power to spark plugs on different cylinders.
Check if there is a capacitor fixed to the head aside the coil (there should be one). It should be cylindrical and one inch long, held by a single screw and located aside the coil. If there is a capacitor, that must be replaced with the coil. If you have not replaced the capacitor that is probably involved in the problem.
If you have already replaced crankshaft position sensor, check crankshaft position sensor harness in PCM. I uploaded here the bulletin with CKPS to PCM testing:2003 Taurus CKPK PCM testing.
Test the PCM and CKPS connectors. Check again voltage to coils and spark plug cables. I understood that spark plug cable nr.3 has no spark from coil. Check DC in from ignition to coil.
Posted on Sep 01, 2011
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