Compression Ignition Addict
Join Date: May 2009
Location: In the country south of Covington TN.
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Well, when I left the career as a Ford mechanic the Powerstrokes hadn't come out yet. For that matter neither did the 7.3 IDI. Since I've never had a problem with mine yet that required diagnostics, I've not had to run down running problems on a PSD. To the best of my understanding.....
po472 could be caused by a clogged tube from the manifold to the sensor. They can be cleaned.
po603 can be caused by a chip/programmer and can be ignored (I think).
Does it still set po340 with the new CPS?
From vast experience with EEC III and IV systems though, it's generally best to address the codes first before looking for the proverbial 'needle in a haystack'. I basically asked you to post the codes so that others with more experience with these the OBD system on these things could help. I'm still at work and don't have the manuals in front of me. Hopefully, someone with actual experience with these will have more insight. If I get time tonight, I'll dig out the manual and see what it says.
Randy DuCharme (Radio AD5GB)
'06 F-250 FX4 A/T Super Cab short box.
SCT SF3 tuner /w Gearhead Performance custom tunes. ARP head studs, EGR delete, oil cooler/drainback tube/STC coupler/blue spring/standpipe & dummy plug upgrades, ScanGauge II, Sinister Diesel coolant filter, Fumoto drain valves, Stage II direct clutch and ECP solenoids.