'03 6.0 No Start - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 19 (permalink) Old 06-05-2015, 03:02 AM Thread Starter
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'03 6.0 No Start

My dumb truck did it again.... Cranks but wont start.

It has been sitting for a few days. Driving fine when I parked it. Today.... No Start.

HPOP pressure 1500psi while cranking. (Mechanical gauge and ICP sensor)
Base Oil pressure Normal after 20 second crank.
No Codes
Fuel Pressure Normal
RPM reading goes to 80 or so when cranking (AE Scan Tool)
Dash Tach read zero while cranking.
FICM volts 47.5v (AE Scan Tool)
Injector Buzz Test - All 8 Clicked OK.
5 volt reference good. (AE scan tool and Digital volt meter at ICP)
Cam position and Crank position not in sync (AE Scan Tool)
Cam Position Sensor Failure = 0 (AE Scan Tool)

Which sensor drives the RPM readings? I think the Cam sensor.

So I think this describes the current conditions pretty good.

If CMP Failure is OK and the two are out of sync, then CKP is suspect. Right?


Now, How do I get to the CKP sensor? Its buried on the right side, towards the front, below the exhaust manifold. I see it in the Bible pictures but I cant see it on the engine. Is there another way to test the sensor with Ohm meter on pins at the computer?


PS: Anybody want to buy a truck????? Arrrrrguh!!!

2003 F250 6.0L Crew Cab
All factory stock. 225k miles.

Its Just A Machine and Machines can be fixed!
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post #2 of 19 (permalink) Old 06-05-2015, 04:54 AM
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"Dash Tach read zero while cranking."

No sync between CMP + CKP could cause your crank no fire condition, but I'm not 100% sure thats the problem at this point.

Are you getting any fault codes 2614 or 2617 ?

Either of those sensors are very rare to fail.

Maybe try wiggling some harness wiring near or leading to the CKP sensor.

Also try a hard reset by disconnecting the battery grounds for a few minutes then rehook up and try starting.

Another rare but possible issue is the cam timing pin,
http://www.backglass.org/duncan/ps60...l/ps60_053.jpg
http://www.backglass.org/duncan/ps60...l/ps60_052.jpg

Keep us posted, I'll let you know if I come up with anything else.

Harry

Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)
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post #3 of 19 (permalink) Old 06-05-2015, 06:32 AM
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Yes you can ohm them out at the PCM you just need to know the PIN numbers. Unfortunately my regular computer took a dump and my iPad does not allow me onto the ford website to help you at this time. If you pull either sensor and pass a metal tool (back and forth) in front and set a dvom on a low a/c scale you should get a reading if the sensor is good.
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post #4 of 19 (permalink) Old 06-05-2015, 04:37 PM Thread Starter
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I disconnected both batts to reset the computer. Then tried to start. It started!

Now I have P0603 - KAM error (Keep Alive Memory). Is this a left over from the batts disconnected?

I inspected some wiring and found a fraid wire at the ICP connector. I will replace the pigtail.

Attached is a screen shot of my AE Tool.

The only thing I noticed is the "CMP CKP Are in Sync" signal keeps toggling. Is this normal? I have never noticed it before.


I cleared the CIL and P0603 is gone.

So now its off to the International Shop for a pigtail.


Side Note: I got an Email from A Chevy Forum this morning wishing me a Happy Birthday. Is this an omen or what? Wrenching on my Ford is no way to spend a birthday.
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2003 F250 6.0L Crew Cab
All factory stock. 225k miles.

Its Just A Machine and Machines can be fixed!
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post #5 of 19 (permalink) Old 06-05-2015, 05:38 PM
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KAM error is from disconnecting the batteries. Looks like the pigtail will be the fix. Happy Birthday! Chevys break also.

Dave

2004 Ford F-350 Regular cab with 6.0.
Completely Stock.

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post #6 of 19 (permalink) Old 06-06-2015, 01:20 PM
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"The only thing I noticed is the "CMP CKP Are in Sync" signal keeps toggling. Is this normal? I have never noticed it before."

A few months ago I saw that on AE and freaked out too. Programmed ScanGage to watch it and it was fine. Checked it with IDS and it was fine, so I think it's an AE glitch.

No batts, KAM loses it since no power to retain.

Jack -
Formerly FMTRVT, Manager of Vehicle Testing - Brakes

2003 F-350SC Lariat 4x4 6.0L Auto

Truck Modifications as below in Pictorials on Facebook. Google - Facebook TooManyToys
Step Lights;Painted Flanges; Bypass Oil Filter; Heated Mirror Switch; Reverse Lights; 7.3L Fuel Reg Shim; 6 Disc Radio Speed Volume Mod; Coolant Filter, etc.
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post #7 of 19 (permalink) Old 06-06-2015, 02:02 PM
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I've been trying to sort out why my truck starts almost instantly one time and others up to a 3 sec crank. AE shows no FICM sync until the truck fires and cam sync stays at 0. All pressures and volts are normal and the truck runs great, so I'm not too worried, just trying head off a future problem. I'm going to swap the cam sensor just for grins, the crank sensor is buried behind the A/C compressor and is a pain to get to.

2003 F-250 CC SB FX4 Lariat Black on Gold
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post #8 of 19 (permalink) Old 06-06-2015, 05:10 PM Thread Starter
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Update: Put on the new ICP pigtail. All seems OK. Loaded up truck and trailer for a weekend with the Grand Kids, headed out and a few miles down the road the AC quit again. Decided to turn around and call it quits. Just too many breakdowns to risk getting stuck in the mountains.

The front half of the AC clutch has fallen off twice. The last time I used a healthy dose of lock tight on the bolt threads. This time the AC comes and goes. Totally random. Not like a low pressure cutout. More troubleshooting is required. Maybe engine harness related. I have never had any refer line open.

I'm thinking about removing the entire engine harness and closely inspecting and/or repairing anything that looks bad. A new harness from International is about $1300. (Ford probably twice that. I didn't even call) The one ICP pigtail was $17. I can use pigtails and build my own harness for way less.

I also noticed my fuel pressure is pulsing again. I've had issues with injector tips before but I have never had all of them out. Should I pull all of them? Is there a good place that rebuilds injectors? Maybe its just time for an injector overhaul. 225K miles and 12 years. What seems to be the normal lifespan of injectors? I probably should have pulled them when I had the coolant leak under the intake.

I have always said that I was going to drive this truck until the wheels fall off. Is an AC clutch the same thing as a wheel? (Its round like a wheel)

I like my truck and I know its faults and history. I don't want to start learning a new truck. But maybe its just time for a new one.

Stay tuned for the rest of the story......

2003 F250 6.0L Crew Cab
All factory stock. 225k miles.

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post #9 of 19 (permalink) Old 06-06-2015, 05:54 PM
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The engine harness less the glow plug harness is $554 from Tousley/Autonation White Bear. Pt number 3C3Z-12B637-AB I replaced mine this past winter when I had it apart for new injectors. I thought about repairing it but by the time I got it out I realized the best option was replacing it. I had 175k on my injectors and the shops I talked to said they were due, one was giving a contribution code. Two were leaking past the copper gaskets. Engine runs noticeably smoother and I picked up some mpg

2003 F-250 CC SB FX4 Lariat Black on Gold
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post #10 of 19 (permalink) Old 06-07-2015, 09:05 PM
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Quote:
Originally Posted by Fixinitmyself View Post
..... I also noticed my fuel pressure is pulsing again. ......
Mine has been doing that too, but can't find an injector fault. Mine is 52-57 at idle hot.

Jack -
Formerly FMTRVT, Manager of Vehicle Testing - Brakes

2003 F-350SC Lariat 4x4 6.0L Auto

Truck Modifications as below in Pictorials on Facebook. Google - Facebook TooManyToys
Step Lights;Painted Flanges; Bypass Oil Filter; Heated Mirror Switch; Reverse Lights; 7.3L Fuel Reg Shim; 6 Disc Radio Speed Volume Mod; Coolant Filter, etc.
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