Compression Ignition Addict
Join Date: Jul 2010
Location: Falls Chruch
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Too many variables. Could be a lot of things
Has the CPS been replaced by Ford? Its under recall and should be replaced. That may fix your problem right there.
Next step is to have someone with a REAL scanner check for codes. The basic OBD-2 scanners at autozone will NOT work. Least expensive is an autoenginuity. If codes are found, they will lead you in the right direction.
If no codes are found but there is a weird bogging and it dies, check fuel pressure. You'll need a gauge to do this.
Searching on any of the above terms will lead you to all the information you need.
Nonconformist. Functionality over bling.
My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.