Random shut down with no start

Arisley · Apr 3, 2013

Get a can of air, when the truck shuts off, turn it upside down (the can of air, not the truck), and spray the IPR coil. See if it will start.

lincolnlocker · Apr 3, 2013

now thats a great idea... i was thinking break cleaner would do the same...

live life full throttle

SMOKEY · Apr 3, 2013

Arisley said:
Get a can of air, when the truck shuts off, turn it upside down (the can of air, not the truck), and spray the IPR coil. See if it will start.

Thanks I will try that.

SMOKEY · Apr 3, 2013

Ok really pulling my hair out now. I went to try the can of air test today so I started the truck and waited for it to shutdown. Over 1 hour went by with the truck running fine so I shut it off and came back a couple of hours later and let it run again this time for almost 2 hours so I shut it off again and let it cool off then tried again with no luck getting it to shutdown. I guess I will try again tomorrow or maybe just light the thing on fire.

907DAVE · Apr 3, 2013

I have seen quite a few of these now, every time a new IPR fixed the issue.

SMOKEY · Apr 3, 2013

I got a price for the IPR today for $240, does that sound about right?

Arisley · Apr 3, 2013

Sounds high.

lincolnlocker · Apr 3, 2013

http://www.riffraffdiesel.com/mm5/m...oduct_Code=F81Z9C968AB&Category_Code=F731-OEM

SMOKEY · Apr 3, 2013

Thank you that price is much better.

SMOKEY · Apr 10, 2013

Got the new IPR in from riffraff yesterday, great pricing fast shipping and good product I would highly recommend them. I got it put in the truck today and so far runs good and doesn't shut itself off but I will see what happens over the next few days. And thank you to everyone that helped me out.

Clem1226 · Apr 10, 2013

SMOKEY said:
After its shuts down and I try to restart with the icp plugged in the pressure only gets to 148 while cranking and with icp unplugged it gets to 1800 while cranking with no start either way. I will do some more data logging later today when I am around the truck.

OBD data with the ICP sensor plugged in = pressure the sensor is seeing ( if the sensor is good).

OBD data with the ICP sensor unplugged = expected ICP with the demanded DC value based on a "limp" or look up table the PCM will use to get you home in the event your ICP sensor fails.

at least that is my undersatnding of it

Hope your new IPR is the fix, sounds like it is.

lincolnlocker · Apr 10, 2013

Clem1226 said:
OBD data with the ICP sensor plugged in = pressure the sensor is seeing ( if the sensor is good).

OBD data with the ICP sensor unplugged = expected ICP with the demanded DC value based on a "limp" or look up table the PCM will use to get you home in the event your ICP sensor fails.

at least that is my undersatnding of it

Hope your new IPR is the fix, sounds like it is.

yes... unplug the icp sensor, icp/pcm goes to default/limp mode.

live life full throttle