I have 3 codes showing up-113, 476, 1211. Engine runs fine until service engine soon light comes on and then it has just enough power to move itself. I traded out the IPR as I had a good used one but that didn't change anything. The service engine light will come on after driving 2 miles. I tried the Scan Tool on it but it won't read anything at all (1995 F350).
Any ideas before I start throwing parts at it or taking it to a shop?
Thanks,
Kelly

 

* P0113 IAT Sensor Circuit High Input
* P0476 Exhaust Pressure Control Valve Maffunction
* P1211 ICP Not Controllable - Pressure Abow/Below Desired

 

I assume the 476 code is from my exhaust back pressure not plugged in.
Any ideas on the 1211 code for a fix?

 

Unplug the icp and take it for ride and see if it gets better

 

I unplugged ICP. Check engine light was on all the time.
It took a lot longer for the engine to lose power but it did. We are 25 degrees (75 vs 100)cooler than the other days when I have been working on it. It seems to be related to the engine oil getting fully warmed up. Engine was cold when I unplugged the ICP.

 

I'd say you need to get a pressure gauge hooked into the head and see what you have for pressure. It's got to be at least a 3000psi gauge. Maybe your hpop is dead. How many miles on it?

 

With the engine cold ohm out the EOT sensor it should be close to ambient temp

For ohming oil temp sensors
K Ohms__Volts____TempF___Temp C
826______4.75______-32______-36
785______4.75______-30______-34
575______4.73______-22______-30
525______4.72______-20______-29
365______4.68______-10______-23
300______4.65______-4_______-20
250______4.63______0________-18
192______4.6_______10_______-12
173______4.55______14_______-10
139______4.49______20_______-7
103______4.4_______30_______-1
98_______4.38______32_______0
64_______4.18______40_______4
59_______4.13______50_______10
43_______3.92______60_______16
37.3_____3.8_______68_______20
33.6_____3.73______70_______21
26.8_____3.53______80_______27
24.3_____3.44______86_______30
21.5_____3.32______90_______32
17.2_____3.08______100______38
16.1_____3.01______104______40
13.9_____2.84______110______43
11.2_____2.59______120______49
10.9_____2.56______122______50
9.34_____2.38______130______54
7.55_____2.11______140______60
6.28_____1.89______150______66
5.34_____1.72______158______70
5.32_____1.71______160______71
4.48_____1.52______170______77
3.84_____1.37______176______80
3.75_____1.35______180______82
3.17_____1.18______190______88
2.8______1.09______194______90
2.68_____1.04______200______93
2.2______0.88______210______99
2.08_____0.86______212______100
1.87_____0.78______220______104
1.56_____0.67______230______110
1.33_____0.59______240______116
1.19_____0.53______248______120
0.38_____0.17______CEL Below This
__________________

 

The truck has 250000 miles on it. I have only owned the last 25000.
Don't know anything about prioir history on it.


What are you thinking on the EOT and is that the sensor in the backside of the HPOP oil reservior?

The rest of the story is that the inside part of factory plug where dipstick goes into pan is in pan somewhere as I put in Strictly Diesel's aluminum thingy.
Truck also got hot while dragging a heavy load home one day. That is when the code 1211 first showed up and the low horsepower issues.
Engine oil was changed when aluminum thing was put in-about 500 miles ago.

 

EOT can be causing a fueling issue

 

From the manual :

X7 KOER ON-DEMAND DIAGNOSTIC TROUBLE CODE (DTC) P1211
DTC P1211 indicates that injection control pressure was above or below commanded desired pressure during self test mode.
Possible causes:
incorrect oil or viscosity
poor oil quality
gel fuel/no fuel
low fuel pressure
damaged IPR valve
high-pressure oil system leak
damaged high-pressure oil pump
damaged PCM

 

I finally got gauges hooked up to it. Truck started to take a long time of cranking to get started. Fuel pressure runs around 55-60 idling. When code 1211 is set, fuel pressure is around 36-38. Engine oil pressure runs around 22-24 at idle and 44-48 at highway speeds with engine warm. High pressure oil started out at 2000-2500 under acceleration but after engine was warm, dropped to 1500 under acceleration. Gauge drops to zero within seconds of shutting off engine. Oil pressure at idle after engine is warmed up is 500.

I assume injector orings-is that correct?
I am thinking it might be time for injectors with the mileage on the truck and no history on it.
What do you guys think?

 

bump this up please.
thanks
mitch