04 f250 6.0 starting issues - Ford Powerstroke Diesel Forum
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Old 01-25-2014, 12:01 PM
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04 f250 6.0 starting issues

I have a 2004 ford F250 6.0 Iv had starting issues from the first day I got it. I installed new battery's on jan 15th and all the problems went away. This morning jan 25th all the problems came back.

what it does is sound real strange and shake around a lot and then it sounds fine and runs smooth. I think its the glow plugs but I don't know. the fuel filters are new and that made no difference.

here is a video of the start up when I first got the truck, it does the same thing now.

kinda hard to hear it on the video
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Old 01-25-2014, 05:34 PM
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whats the temps outside on startup
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Old 01-26-2014, 07:55 AM
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From various threads and things I've learned here and videos of symptoms and fixes, I'd say a bad case of stiction in your injectors.
They can be repaired or if high mileage it may be better to replace injectors if not done in recent history.
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Old 01-26-2014, 09:56 AM
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If your batteries went dead on you I would say probably your FICM. Did you test the output voltage on it?
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Old 01-27-2014, 11:00 AM
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about 55-65 degrees outside. FICM voltages check out good, I have never changes injectors but have always kept up with fuel filter changes sooner than recommended. Is there any kind of test I can run that would tell me for sure that the injectors are the problem?
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Old 01-27-2014, 01:01 PM
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The start does not sound that strong, almost like weak batteries. Do you have monitor? What is your ficm voltage with key in on position versus the start? What is your battery voltage at start?


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Old 01-31-2014, 02:26 PM
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both battery's are new from napa. Ill hook up a monitor to the obd port and get back with data. the last time I checked the ficm the voltage was good.
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Old 01-31-2014, 03:21 PM
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You can try tracing your glow plug harnesses to the top of the block disconnect the harnesses from the main harness on each side of block.Then check each pin (4ea) in the connector going down to the glow plugs for resistance or ohms to the engine block (ground), you are looking for about 2 ohms. I'm not sure if you are familiar with resistance but you are checking the heating element for each glow plug (coil) if you read o.l. (Overload) from the ground to the one of pins you either have bad harness, harnesses and or glow plugs. 1 to 2 ohms is good. You need to pull the glow plugs on that side and check them individually if you find some bad readings. Replace glow plugs as needed and if you pull the harness or harnesses from the glow plugs plan on replacing the harness. Keep us posted.


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Old 02-01-2014, 01:23 PM
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Quote:
Originally Posted by Bluedemon6.0 View Post
You can try tracing your glow plug harnesses to the top of the block disconnect the harnesses from the main harness on each side of block.Then check each pin (4ea) in the connector going down to the glow plugs for resistance or ohms to the engine block (ground), you are looking for about 2 ohms. I'm not sure if you are familiar with resistance but you are checking the heating element for each glow plug (coil) if you read o.l. (Overload) from the ground to the one of pins you either have bad harness, harnesses and or glow plugs. 1 to 2 ohms is good. You need to pull the glow plugs on that side and check them individually if you find some bad readings. Replace glow plugs as needed and if you pull the harness or harnesses from the glow plugs plan on replacing the harness. Keep us posted.


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thanks for the info, I just checked it out and got about 1.6 ohms on every pin. also plugged in the obd2 port to stream some data and everything looked fine except for the MAP reading it was showing 104kpa while engine was idling. maybe diesels are different but shouldn't it be pulling vacuum? I know more about gasoline engines so could this be normal?
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Old 02-01-2014, 03:53 PM
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I'm not sure about pulling a vacuum but I do know the map sensor is where the Ecu reads the boost and I think atmosphere pressure in the intake as well. If all your readings checkout such as battery voltage 13+, at least ficm 45v while the key is in the on position to start position. Then it is either stiction or maybe wire problem with the glow plugs or a glow plug control module. If you pm me your email I can email you the schematic then you can check each glow plug from the control module to see if maybe your gpcm is bad. What is your icp and ipr % while starting? Idk?


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