Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
I am busy on a rather urgent project and am absent for a bit.
Need everyone who knows of a failure to post whether there was a simultaneous / prior failure involving injectors ore anything electrical (short, dielectric).
Just realized that the injectors are pushing high voltage DC and the current driving them is quite substantial if there is a short to ground --- and paired with a bad ground path (Ford is famous for that) that could do it.)
Electrical current from the injector traveling along the fuel lines, via the common rail, back to the pump can cause a electrically induced fault (corrosion / electrolysis / etc.) in the pump.
We are dealing with 100+V DC... not small stuff.
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In an unrelated case, I fixed a bad ground path over the winter by installing an "add on" ground wire from the alternator.
Have also fixed previous Ford faults by adding auxiliary ground wires.
FICM ground wire is one of my cherished "aha fixes".
Need everyone who knows of a failure to post whether there was a simultaneous / prior failure involving injectors ore anything electrical (short, dielectric).
Just realized that the injectors are pushing high voltage DC and the current driving them is quite substantial if there is a short to ground --- and paired with a bad ground path (Ford is famous for that) that could do it.)
Electrical current from the injector traveling along the fuel lines, via the common rail, back to the pump can cause a electrically induced fault (corrosion / electrolysis / etc.) in the pump.
We are dealing with 100+V DC... not small stuff.
------------
In an unrelated case, I fixed a bad ground path over the winter by installing an "add on" ground wire from the alternator.
Have also fixed previous Ford faults by adding auxiliary ground wires.
FICM ground wire is one of my cherished "aha fixes".
