Join Date: Apr 2007
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New CPS, no joy???
Ok I had the dreaded Powerstroke stall last week on my 99 F350. I took it in and had the codes ran, as expected it came back a CPS failure with a low boost malfunction to boot. So I told the tech not to bother with clearing the codes untill I had replaced the CPS. I got her home and installed the new CPS and she was good for about a week, I intended to go back today to get the codes cleared anyway but when I pulled into the driveway it just shut off. I made it to the shop ok, it did cut out once kinda like my foot had slipped off the throttle but no other problems. When he ran the codes, nothing, I never disconnected the batteries or anything but the codes were gone? So I did some looking under the hood and noticed a couple of things.
1. There was a in line fuse on one of the wires going from the solenoid on the passenger side that was blown.
2. There is a module mounted on the passenger side with a harness that plugs into a sensor on the fron of the turbo housing where the after cooler piping comes in, on the front of the modual there is a red tab that goes up and down, It was in the down position but looks like it's supposed to be up.
I replaced the fuse and swithched the tab up and 30 miles with no probs.
Just looking for some input I have herd of people having problems even after a new CPS, but with no codes I'm at a loss, I'm in the process of getting another spare CPS but haven't won anything on Ebay yet.