Died while driving..... OBD II wont work - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 05-09-2013, 09:37 AM Thread Starter
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Died while driving..... OBD II wont work

I was driving my 1996 7.3 around town the other day and she just died right on the spot while accelerating and wont restart. I suspect some kind of complete hpo loss. Is it possible the hpop just gave out? So I grab my AE software to see what kind of icp I have. Plug it in and I have power at the port, but I can't get the software to communicate with the truck. Then I tried my edge insight cts and had the same result.

Truck has 135,000 miles, Exhaust, Intake, Stage 1 Casserlys, 6 pos chip

2005 - 6.0 PSD - 5r110 - F 250 - Lariat - CCSB - Harley Head Lights- Homemade Steps - American Racing 18x10s - Homemade 4" Exhaust - Sinister Coolant Filter - Sinister EGR Delete - ELC Coolant - SCT W/ID Tunes - STC update - Fuel Spring Update - Edge Insight CTS W/Pyro - Glow Shift Fuel Pressure Gauge - 6.4 Banjo Bolts - Updated Turbo Drain/Feed Lines - MTW Stage 1 - Warren 155 W/Stock Nozzle - ARP Studs - S& B Intake - GOGO Direct Drive Solenoid
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post #2 of 11 Old 05-09-2013, 10:00 AM
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Hpo usually don't go out, get weak tho, tried CPs? PCM? Since its not reading, all fuses good?

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post #3 of 11 Old 05-09-2013, 11:35 AM
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Is the Wait-to-Start light coming on? Is the CEL illuminated? How's the main oil level? Tach moving while cranking? Cheers!

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post #4 of 11 Old 05-09-2013, 12:12 PM
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If the fuse for the PCM is good and the WTS light is not coming on when you turn the key on, it is very possible that your PCM is fried.

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post #5 of 11 Old 05-25-2013, 01:30 PM Thread Starter
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Finally getting back to work on this truck.

Tach does move while cranking

Oil level is good

WTS Light illuminates

All Fuses are good, but I'm not sure about the gray two prong in the upper left hand of the under the hood box. What does it power? It failed on the fuse tester.

Probably only 80 miles since chip and injectors were installed. Truck has an obvious knock as well too, but all injectors were seated and torqued to spec???

2005 - 6.0 PSD - 5r110 - F 250 - Lariat - CCSB - Harley Head Lights- Homemade Steps - American Racing 18x10s - Homemade 4" Exhaust - Sinister Coolant Filter - Sinister EGR Delete - ELC Coolant - SCT W/ID Tunes - STC update - Fuel Spring Update - Edge Insight CTS W/Pyro - Glow Shift Fuel Pressure Gauge - 6.4 Banjo Bolts - Updated Turbo Drain/Feed Lines - MTW Stage 1 - Warren 155 W/Stock Nozzle - ARP Studs - S& B Intake - GOGO Direct Drive Solenoid
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post #6 of 11 Old 05-25-2013, 06:40 PM
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It's not a fuse, I think you are looking at the diode for the PCM. With a meter set to OHMs it will show .1 in one direction but open in the other if it's good. Don't put it back in backwards!

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post #7 of 11 Old 05-26-2013, 10:41 AM Thread Starter
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I think I'm going to throw a new diode in, but idk if you could install it backwards? The left blade is rotated 90 degrees. Truck fires up now but is knocking like crazy and I still have no communication at the OBDII just power. Is it possible the PCM could still be fried even though it starts?

2005 - 6.0 PSD - 5r110 - F 250 - Lariat - CCSB - Harley Head Lights- Homemade Steps - American Racing 18x10s - Homemade 4" Exhaust - Sinister Coolant Filter - Sinister EGR Delete - ELC Coolant - SCT W/ID Tunes - STC update - Fuel Spring Update - Edge Insight CTS W/Pyro - Glow Shift Fuel Pressure Gauge - 6.4 Banjo Bolts - Updated Turbo Drain/Feed Lines - MTW Stage 1 - Warren 155 W/Stock Nozzle - ARP Studs - S& B Intake - GOGO Direct Drive Solenoid
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post #8 of 11 Old 05-27-2013, 07:33 PM
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What does it do with the chip removed?
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post #9 of 11 Old 05-28-2013, 02:07 PM Thread Starter
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Finally got AE to work with the truck, thanks to what I found on another forum (AutoEnginuity doesn't want to talk to my truck - Diesel Forum - TheDieselStop.com)



When you first launch the AutoEnginuity software there are some settings that need to be modified. The settings below are what we recommend to get the best results when connecting to Powerstroke Diesel vehicles. Connection to other vehicles may require changes to these settings. All of these settings are located in "Communications Configuration" on the "Vehicle" menu.
Computer Interface:
Select "Auto Detect Serial Port" ONLY if you are using a Serial version of the AutoEnginuity tool
Select "USB or Manually Set Serial Port" for USB versions of the AutoEnginuity tool
I prefer to turn off "Automatically Connect on Launch" so I can start the software without it trying to connect
Vehicle Interface:
"Vehicle Interface Type" should be "Auto Detect" to allow connection to 7.3L and 6.0L trucks without changing settings
"Initialization Type" should be "Ford Powerstroke" (versions 4.2 or earlier) or "Non-OBDII" (versions 4.3 and higher)
NOTE: This setting will need to be changed to "OBDII Compliant" if connecting to a non-Powerstroke vehicle
"Use Fastmode CAN" and "Use Heartbeat" should not be selected
The above settings are automatically saved. You won't need to adjust these unless you change them to connect to a different vehicle.


Now that I have that working I can check codes and monitor ICP. There was no codes, but what I think I found is a high pressure oil problem. The truck will stall out if you punch it and let out. After that sometimes the truck will restart and sometimes it won't. When this happens it will only build about 280 lbs and the ipr duty cycle jumps into the 60 + range. I'm thinking a failed IPR?

2005 - 6.0 PSD - 5r110 - F 250 - Lariat - CCSB - Harley Head Lights- Homemade Steps - American Racing 18x10s - Homemade 4" Exhaust - Sinister Coolant Filter - Sinister EGR Delete - ELC Coolant - SCT W/ID Tunes - STC update - Fuel Spring Update - Edge Insight CTS W/Pyro - Glow Shift Fuel Pressure Gauge - 6.4 Banjo Bolts - Updated Turbo Drain/Feed Lines - MTW Stage 1 - Warren 155 W/Stock Nozzle - ARP Studs - S& B Intake - GOGO Direct Drive Solenoid

Last edited by grayweber24; 05-28-2013 at 02:10 PM.
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post #10 of 11 Old 05-28-2013, 08:39 PM Thread Starter
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Quote:
Originally Posted by madpogue View Post
What does it do with the chip removed?
Doesn't seem to make a difference.

2005 - 6.0 PSD - 5r110 - F 250 - Lariat - CCSB - Harley Head Lights- Homemade Steps - American Racing 18x10s - Homemade 4" Exhaust - Sinister Coolant Filter - Sinister EGR Delete - ELC Coolant - SCT W/ID Tunes - STC update - Fuel Spring Update - Edge Insight CTS W/Pyro - Glow Shift Fuel Pressure Gauge - 6.4 Banjo Bolts - Updated Turbo Drain/Feed Lines - MTW Stage 1 - Warren 155 W/Stock Nozzle - ARP Studs - S& B Intake - GOGO Direct Drive Solenoid
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