Posts by bismic
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What rpms are you getting when it is cranking, but not starting?
How fast can an empty secondary fuel filter bowl be filled with the key "on"? Be careful, it should fill in seconds. This is a two person job.
Might need to do a cranking bubble test for an injector that is leaking combustion gas back into the fuel line(s).
www.powerstroke.org
How fast can an empty secondary fuel filter bowl be filled with the key "on"? Be careful, it should fill in seconds. This is a two person job.
Might need to do a cranking bubble test for an injector that is leaking combustion gas back into the fuel line(s).
Troubleshooting a No-Start condition
First - get to know the 6.0L (you can skip this part if you are familiar with the 6.0L engine, terminology, engine sensors, and location of components): 2003.25 coffee table book (6.0L bible): Power Stroke Diesel - Power and Pride 2004 coffee table book (6.0L bible)...
www.powerstroke.org
I am not impressed with the code reading thoroughness of the Edge units. ForScan has a better track record of retrieving them thoroughly.
That said, there are electronic glitches that can shut the engine down and will not throw codes. Failing IPR valve electronics, shorting out FICMs, injector solenoid shorts, and EBP sensor shorts, are all known to not always throw codes. Probably a few more.
Having known good parts to try is always a help, but not available to everyone. That said, the issue could be a harness problem, which can be difficult to find as well.
Pretty sure the common harness issue locations are listed in the link I posted above.
The fan clutch harness is a common one, but as I mentioned earlier - an issue there should definitely should throw a code.
That said, there are electronic glitches that can shut the engine down and will not throw codes. Failing IPR valve electronics, shorting out FICMs, injector solenoid shorts, and EBP sensor shorts, are all known to not always throw codes. Probably a few more.
Having known good parts to try is always a help, but not available to everyone. That said, the issue could be a harness problem, which can be difficult to find as well.
Pretty sure the common harness issue locations are listed in the link I posted above.
The fan clutch harness is a common one, but as I mentioned earlier - an issue there should definitely should throw a code.
P1378: Low FICM logic power. System detects less than 7 volts. Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay.
P0528: Are you getting a P0480 along your P0528? If it's just a P0528 you're getting alone, it likely means your PCM is not reading the actual Fan RPMs, but still operational (which is the important part). If you were getting a HARD P0480 and P0528 together, I would say the fan blade ate the actual harness
P0528: Are you getting a P0480 along your P0528? If it's just a P0528 you're getting alone, it likely means your PCM is not reading the actual Fan RPMs, but still operational (which is the important part). If you were getting a HARD P0480 and P0528 together, I would say the fan blade ate the actual harness
As posted above ..................
Also:
These will cause an engine to die and not re-start!
Gotta love ForScan!
P1378 | Low FICM logic power. System detects less than 7 volts. Could be low batteries, loose connections (or excessive circuit resistance), bad relay, or even a bad FICM: FICM detects logic power low, less than 7 volts. Low batteries, loose connections/ resistance in circuit, defective relay. |
Also:
| P0562 | System voltage low - PCM less than 8 volts. Cause of no-start/misfire. Unreliable starts below 9 volts. Low VBAT, loose connections/resistance in circuit, Vref engine concerns. |
These will cause an engine to die and not re-start!
Gotta love ForScan!
FICM Connector Clips - Ford Truck Enthusiasts Forums
6.0L Power Stroke Diesel - FICM Connector Clips - Went to change out my FICM with a rebuilt unit from circuitboardmedics. I've pulled it off a few times prior when doing other projects, so thought piece of cake . Forgot that there are clips on both sides of the connectors and ended up breaking...
www.ford-trucks.com
@SuperDave23
The important step is to nail down the cause:
Could be the FICM itself, the harness from the PCM to the FICM, the CMP wiring to the PCM, or even the PCM (though very unlikely).
Have you inspected the harness from the PCM to the FICM (I can't recall)? It is the wiring TO the X3 connector.
Could be the FICM itself, the harness from the PCM to the FICM, the CMP wiring to the PCM, or even the PCM (though very unlikely).
Have you inspected the harness from the PCM to the FICM (I can't recall)? It is the wiring TO the X3 connector.
An EGR valve short (typically in the 12V power wire) can cause an engine to stall much like an issue with the fan clutch wiring will (and the IPR wiring). Has to do with pulling down the PCM power voltage. That said, I can't say that I have noticed that it prevents FICM Sync. Hmm - an interesting possibility at least.
Tasca Ford is one to check. Unfortunately the main harness is getting scarce and even more expensive. I believe the part number is 5C3Z-12B637-BA . Is that correct?
$634
Someone mentioned these sources for the aftermarket. I haven't done any checking on them, I just made a note:
$634
Someone mentioned these sources for the aftermarket. I haven't done any checking on them, I just made a note:
AFTERMARKET WIRING HARNESS SOURCES |
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