I am try figure out how to convert excel to graphic and didn't work out. I am try find way to attach file here.

I thought the more pressures it push in cylinder and cause blue smoke.


wiring to icp is kinda oily so I try clean best I can.

 

It's possible that the more pressure is causing more oil to leak into the fuel rail and then into the cylinder causing the smoke, but that does not explain your P1280 code. The truck will still be sluggish if the computer is ignoring the ICP sensor.

Since AE keeps telling us to look at the ICP sensor, let's give it a shot. Here's your guide on how to run through testing the P1280 code

 

What your email or sent me in PM.
How you attached that pdf? I can't attach Excel here to show you info and everybody who want see excel. I have enough of headache try figure how convert to graphic. Been try doing that for 3 hours and stop now.


That pdf I was wonder can I use ohm meter and check ICP's wiring connector to see if it good? If It bad can I cut one out junkyard and solider together? It going be hard because it very short wiring.

 

Data from his AE scan.

 

Thank you for post.

You see icp go up that when I rev and look at Fuel volume that when I rev it up. Idle it around 9-12

 

The ICP doesn't look like it's moving around enough like it should. My ICP reading won't stay constant for half a second. It stays in the same range but is always changing. Yours looks too constant. When you punch the pedal it goes up and comes back down, but it I'm guessing that's from the stock programming. Do the tests I attached earlier and see what it tells you.

 

When I got first running it would blow TONS black smoke on accelerator. I have no idea if it programming. I could see obdII been use many times there scratch on it.

ICP been stay constant but if quick rev it start climb little. Hold on pedal then it climb HIGH 1000 psi to 2400 psi before rpm reach 3K.

 

I know when I was trouble shooting my truck, I unplugged the icp and if I'm not mistaking the icp on ae defaulted to the 700 psi range. Also if I would just rev my truck it would smoke like that. I don't think his PCM is reading the icp, it's in the default mode!

 

Did your truck start blue smoke when ICP was above 1400 or higher psi it start pour blue smoke at higher rpm?


I wish there way to degrease this engine it have oil on wiring harness and connectors.

 

That's normal. If the truck isn't reading the ICP from the sensor, then it uses a preloaded table with lots of variables and it spits out whatever ICP it "thinks" you should be seeing. Rev the pedal and it will make the ICP reading go up. Not up like it should, but similar enough that the truck will still move down the road. It will just be sluggish and smoke.

 

That what issue you talk are exact. I could notice couple rev it would start sluggish and tons of blue smoke come out exhaust so get off gas then hit again it go away.

I will try get video of smoke and sound from engine for everybody here.

But I notice when cruise 45 mph I need turn off overdrive or it will shake like it bog down. Is that other issues?

 

I don't know. You need to do the ICP test I attached earlier and fix that issue first before we can go any further.

 

Awesome file you posted Chris! ( I need to hang around you more...)
I love DC8... Why bother even asking the question? The author should have just wrote "replace ICP". I got a kick out of that one part
Where did this troubleshooting tree come from? The PC/ED manual?

 

Did check ICP wiring Oh man they cover in old oil it so mess. Clean them best I can.

I need go get OHM meter from other truck.

Still get p1280

now there new codes again.

p1690 wastegate solenoid circuit

p0381 glow plug/heater indicator circuit I click that code it show
ignition system misfire

Then let idle for 10 mins then try rev it shake then let idle 30 second it died and won't start.

 

Did try figure why can't scanner connect truck. End reset truck and unplug then plug then finally work. Now it running again ok.

Got new code
P0606 ECM/PCM processor
Computer/ Auxiliary outputs


I did wash engine with power washer but I only direct in engine and stay away from wiring harness on driver side. Tons of oil greasy stuck in valley.


I look at ICP voltage it only 0.02 and try wriggle it same result. Try unplug it 0.00. If Rev it 0.03 but back to 0.02 voltage