My 2002 F-250 PS has a problem that seems to be worsening. The truck flat out dies quite frequently. Usually happens under light acceleration (taking off from a stoplight), but also happens during coast down. When accelerating, its almost like it hiccups, no backfire but it feels like it's trying to backfire through the intake. It'll occassionally light up the MIL (emission light?) on the left side of the cluster, but it never stores a code. This has been getting continually worse....to the point my wife refuses to drive the truck. When it dies, you can usually get it to start right back up again without even having to come to a stop. Occasionally though it'll take a number of cranks to get it fired back up. The camshaft sensor was replaced about 5000 miles ago. Problem existed before that even. Any ideas? injector pump maybe?

I'll also add that it never does it when cold. It happens the most after you've driven for a while, stopped somewhere, then gotten back in.

I've searched TSBs but don't see anything.

 

sounds to me as if the replacement cam sensor you have is a faulty one. buy a new one and replace it. if it doesnt fix it, at least youll have a spare.

 

Classic symptoms of a CPS that's getting intermittant.

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i seem to be having a similar problem if not the same. my excursion shuts down in a way similar to how you described. I am not trying to hijack a thread but what is CPS? and does this seem to be reflective of a bad cam sensor? any imput would be helpful. thanks

 

Around here we refer to the cam sensor as a CPS, a Cam Position Sensor.

These are very common failure items for the 7.3 engine. Those "in the know" keep a brand-new spare in their glovebox. That's how "reliable" they are.

When going to buy a replacement, stay away from your Ford dealership, as they get just about double what the going rate really is. A good place to make yourself known, once you own a Powerstroke, is your local International truck dealership's parts counter, where the parts prices are more reasonable.

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Or even cheaper place for the same thing $55 plus $8 s/h
http://cgi.ebay.com/ebaymotors/CAM-P...QQcmdZViewItem

 

Yesterday on the way to work I just happened to have an Xcal2 with me that I had programmed for a customer. The truck stumbled and died several times throwing a CE light. I've never gotten codes before because it seems to not be kept in KAM. This time, without shutting off the truck I hooked up the Xcal2 and got P0344 (Camshaft Position Sensor Intermittent Signal)! Yipppeeeee finally some direction on the problem. The sensor is probably less than 15,000 miles old though but from reading other posts they seem to be pretty unreliable. I'll replace it today and see if the problem goes away.

 

Make sure the connectors are CLEAN, too. Maybe a tad of dielectric grease on the sealing surfaces to prevent water incursion?

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my 2001 f-350 is doing the same things will shut off while driving then restart sometimes by itself or maybe have to crank it. I was told by dealer it was CPS was going to take it in and have it done but sounds easy to do from reading these posts. Can anyone tell me where it is located on the engine

 

Ten o'clock position of the crank pulley.

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Thanks to this forum ,I was able to diagnose my problem, avoid dealership prices on the part & labor, and have the pride in doing the work myself. Went to the International dealer down the street to pick up the new sensor. $100.70 ( $85 less then Ford quoted).
The International part # is 1825899C93
Came home and searched the threads again and found this diagram......

Searched more and found the tools for the job.....
10mm socket with a short extension
slotted screw driver - needed to lightly pry sensor out
vise grips - in case it was too stuburn to pull out (and it was)
dielectric grease - to put on the electrical connections on the new CPS

After the initial time spent online, only took me about a half hour. (took longer as it was 25 degree weather and laying on the ground was a bit cold on the old back). This is after Ford told me a minimum of 2 hours labor. So it was well worth the money I saved. I'm definately gonna get me a spare to keep in the truck, just good insurance. Good luck with your project!

 

Replaced mine the other night and all is well. Now I can reload my SCT tunes!

 

Or it is 1807339C92 if you want the blue one

 

Thanks guys I will be replacing it in a couple hours from now hope it does the trick.

 

Just curious. How on earth were you guys able to reach in there for the cps? I can't even locate the socket to loosen!