[spmangum6]

For the last year or so my 7.3 has been randomly stuttering while going down the road. It used to only do it once in a blue moon now its happening if I don't drive it everyday and let it sit for a few days. This morning I drove it for the first time in 2 days and made it about half a mile down the road with the truck barely breaking 35MPH, shaking badly, and eventually shut down on me. I have been thinking it's a fuel problem but the more research I've done I'm thinking it could be a CPS. Any help would be great!

 

[petwolf]

CPS is a cheap first check since you should have a spare in the truck. Also check its pigtail for damage. Could also be the famous chaffing on drivers side main harness where it crosses valve cover.

 

[yan7gin]

Icp can also do weird stuff. Check if there is oil in the pigtail. Next time it does it, unplug icp see if it smooth out


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[klhansen]

My vote is the CPS. I had a BWD CPS in mine with the chokes on the wiper wiring harness and it recently started doing similar things. Finally was bad enough that it lit the SES and set a CPS code P0344, confirming my suspicions. Had to go back to the grey recall CPS. I still have two originals and may try one of those if I get brave. Each of those cut out on me a couple times as well.

 

[redtopman]

As I just learned a scanner of some type helps. Just recently bought a scanguage 2 and now have it set up to monitor essentials. Without a scanner then CPS would be the cheapest fix. The fuel pump can be checked by draining the bowl and with the drain open turn on the key to make sure the pump pushes fuel through the drain. Place a pan under the drain so you won't make a mess.