wandering idle

[daveyburt]

hi..

I've got a 01 7.3 on which the idle wanders a bit. it's barely noticeable on the tach. -like un-noticable unless you really stare and concentrate. it happens in a regular interval.

-new fuel filter, CPS is pretty new and it did it before i installed the new CPS. What is that sensor on top of the motor between the alternator and the lift hook....is that the ICP?

is that a possible suspect?


thanks!

[daveyburt]

morning bump

[ajpu1983]

yeah the ICP is a 3-wire sensor on the front of the drivers side head. Unplug it and see if the idle clears up. if so it's the sensor.

[daveyburt]

ok, i'll check that. from what i hear if it has any oil in it, it's bad....thx!

If anyone else has any guesses, please share.

[n20]

Did you ever find out anything on this?? Mine does the same thing. A noticable surge in noise and very slight feel in the seat but can't ever see it on the tach.

[daveyburt]

-Glad to hear I'm not alone


No, I haven't had much time to play but, I hope to soon and will update the thread with the result.

[daveyburt]

-just unplugged the ICP while idling and the idle changed pretty drastically so, i'm assuming the sensor is working. the idle lowered a good bit. idled smooth but lower....and my unplugging it tripped the SES so....i'm guessing it's not the ICP

did you try n20?if so, what happened?

[n20]

i havent had time. I thought if it changed for the better the sensor is bad?? Did it change for the better or worse?

[daveyburt]

idle dropped considerably from the normal 700 so, that sounds like a change for the worse.

[daveyburt]

update:

i had my truck @ ford for the cruise ctrl recall and talked to the diesel tech. He believes it's ICP related.

n20: if you do it before i do, please let me know if it smooths things out....