[DieselHog]

In the last couple of weeks I have had an intermittent studder when driving at constant speed down the highway. Only once every few days or a week. It has died twice while letting off on fuel during this time. This morning it studdered a couple of times and the check engine light came on. Does this sound like a CPS failing?

I have been out of the country and have not kept up for a while, so I don't quite remember. Any help with a diagnosis would be appreciated.

 

[NCHornet]

Sounds more like the UVC harness coming loose. Check the connections on each side, they come from the valve cover and connect to a larger harness in the valley. Make sure all the pins look good and aren't corroded or burnt. Could also be a CPS, they can act like this. You really should have the codes read, this will tell you what to look for.

 

[A Rusch]

Ditto on the codes......... that will point you in the right direction - I was convinced I had bad UVCH plugs until I read my codes - now the IPR is the target...... codes are the first step in troubleshooting /ubbthreads/images/graemlins/rolleyes.gif

 

[capt205]

Mine was doing that almost exactly. As I have an extended plan, I took it in yesterday. They called, and said it was the CPS, so I had them go ahead and change it.

So far...(1/2 day) it is running fine. I'll keep close tabs, and see if that changes .