a couple weeks ago i bought my wife 2000 ford excursion 7.3. A couple days after bringing it home she was driving down the road engine stalled out, she started it right back up no problems. Well i took a look at it that night noticed it had a 1 flash followed by a six flash. So i took it to the stealer to have them diagnose the problem thinking maybe the light had something to do with it. They call me two days later and tell me that they pulled code and p0541 p0605 and p1670 and that i needed to replace the pcm and air intake heater before they could go any further for 1600.00. Feeling uneasy about throwing 1600.00 at it without a definite answer so i opted to do some more investigating myself. they also recommended the fuel filter be replaced so i replaced that. Wanting a second opinion i took the ex to my buddies house he has an AE scan tool for the powerstroke pulled all codes found C1233 C1234 B1352 B2141 u1262-swcp-j1850 and also the p0605. Forgot to mention the stealer performed the recall on the cps at that time as well. He hooked up his powerstroke up and he had the p0605 on his truck and has never had any problems with it stalling out. So we thought that something else was causing this code. Well the other day the wife took it out she said it ran real rough for about 15 miles with little power and then it got better not 100 percent power but running way better so the next day i drove it to work ran great the whole way there on my way home though it started runnin really rough and just died i could not get it to restart and stay running very rough idle and white smoke. so i towed it home had my biuddy come over and pulled some more codes on it the codes this time are as follows U1147 B1352 p1670 p1000 p1260 p0603 b2141 u1262 so for ****s and grins we pulled the pcm and was gopnna swap it with my truck if it were the same well low and behold we found a bullydog chip plugged into the back of the pcm removed the chip reinstalled pcm tried restarting it finally started ran rough at first maybe due to the amount of diesel fuel in the cylinder from previous attempts to start. no more theft light went in and cleared all the codes drove it a couple miles retest the only code that showed was the p1000 thinking woohoo finally got it figured out i sent my wife up to the atm to throw a few dollars my buddies way for helping me with it she comes back and says its doing it again so we go back out and scan it again and get the p0541 code along with cps intermitant error low a
how can the cps be malfunctioning its only two weeks old. SO before i throw any more money at this thing i figured i would get others opinions on this so any help would be much appreciated
Thank you
jeff

 

also when we could not get it started we checked the icp pressure and it climbed ovr 2000 psi read somewhere that that would indicate electrical issue. took these nujmbers when we got it running Rpm 850 Icp volts 1.25 Icp psi between 750- 800 icp duty cycle 17.58 volume of fuel desired was 18.5 vehicle refrence voltage was 4.95 turbine speed sensor rpm was 220

 

yep i thought we found the problem in finding that chip on your pcm,but theres another issue with it some where

 

I'd start with unplugging the CPS and inspecting the plug. There is a little rubber grommet that is supposed to be on the connector. If it fell of when the dealer changed it, it could be the cause of your CPS code and responsible for your symptoms. If you get another no start with the scanner close by, in addition to watching ICP psi, also watch IPR duty % and engine rpm. If you're not registering rpm, then it's a CPS issue.

 

he forgot to tell you that once he got it started the last time there was no throttle when he gave it diesel it took awile to riv up!

 

Just throwing this out there. A friend was having problem with his running like crap and the throttle not responding, no power etc... Had all kid of codes. I asked him about his oil. He put a gallon in and it ran better. Changed it and ran like a champ.
Also I had a mechanic a the dealership do a diagnostic ride with me when I bought my truck, had a mis. It was the map sensor. While there, they said my truck had not had the CPS recall. They did that and did not charge me for the diagnostic ride, mechanic had parts guy sell me the part and he changed it while he was doing the CPS and did not tell the service guy. 3 months later I had to change out CPS after steam cleaning engine. Was not a OEM. Guy I bought the truck from had already replaced the CPS a couple of times with Auto Zone part and dealer just left it in and said they changed it. Think the CPS from dealer wound up in mechanics tool box. He does a lot of side work.

 

Did you try and monitor throttle position with AE Greg? You should be able to see it move on the computer to rule out any pedal assembly issues.

 

i didnt know i could do that!anyway i gave him my AE to use but i talked to him today and he didnt get a chance to look at the truck today!Because he was at a benefit for a friend!it does sound like he isnt getting fuel i didnt hear the fuel pump running!

 

hey guys had someone say they had a similar problem from a differant forum said there exhaust back pressure sensor was causing similar failure. I believe the fuel pump is working cuz you can hear fuel swishing around in the fuel bowl. Ive been crazy busy so i will check some other things and change the oil as well just to see. again thanks guys for all your help i will inform of any changes!

 

well today i finally got some time, replaced the ipr still no run changed the oil too. gonna try replacing the cps that the dealer just put in maybe i got a bad one from them.

 

fuel pump energizes fuel flows out the drain **** when opened think the pump is operating fine. it seems when you do get it started you have to push the pedal to keep it running as soon as you let off it will die but with the pedal floored it struggles to maintain a rough idle but wont die

 

well today i replaced the fuel pump and in doing so i noticed when i removed the pump no fuel ran out of the hose coming from the tank. Thought it to be odd so after replacing it tried starting still air bubbles in fuel bowl well i dropped the fuel tank took out the sending uniy and before my eyes was my problem the fuel tank was below 1/4 tank and the pick up tube was all in pieces in the fuel tank. So tomorrow i will get a piece of tubing extend it to the bottom of the tank and cut a v into as suggested in the forums.

 

get the HUTCH mod kit from Stricklydiesel:

http://shop.strictlydiesel.com/store...ts/73L_TankKit

 

I will and thank you guys for all your help.