Broke down and wont start.
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Laughing Gas
Joined: May 2009
Posts: 753
Likes: 0
From: Mesa,AZ
Broke down and wont start.
So this happened yesterday. Heading north for the weekend truck lost power and when I pulled over it quit. I have an Edge CTS and all numbers were good. I talked to a mechanic I know and he said try some brake clean or something in the intake and see if it fires. So I did and it started briefly. I am thinking it is not getting fuel. When I turn the key to the on position I should be able to hear the HPFP but I do not. I believe it is making some faint clicking but not the normal sound. Is there anyway to test either fuel pump or does anyone have any advice on what the problem might be. Thanks
Logistics Pro
Joined: Mar 2010
Posts: 3,533
Likes: 497
From: NC
Take off the cover to the fuel filter under the hood and turn the key on, it should fill. If there is no fuel in it then nothing is coming from the pump on the rail. If you have fuel, you need to look deeper. Did it act like it ran out of fuel? Not a good thing for the injectors. Do not use starting fluid!
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Laughing Gas
Joined: May 2009
Posts: 753
Likes: 0
From: Mesa,AZ
I pulled the cover off the fuel filter on top of the engine and yes there is fuel there. And I only sprayed the brake clean to see if it would fire. I was on the side of the hwy with little options. And yes it was driving fine then just lost power and shut down.
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Laughing Gas
Joined: May 2009
Posts: 753
Likes: 0
From: Mesa,AZ
I have replaced the stc fitting. the truck has approx. 150k on it. When I pulled the heads I tried to make sure I did all the fixes/upgrades to the motor. I have owned two 6.0's over the last twelve years and this is the first time it left me stranded.
Posting Guru
Joined: Mar 2014
Posts: 1,468
Likes: 5
From: Salt Lake City, utah
Check the inertia switch. Check the connections to the HCFM on the frame rail. Have someone turn the key to the on position but no crank while you are under the truck and listen and feel for the pump to come on. If nothing check the fuses.
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Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
By spraying the brake fluid you skipped everything in the fuel system including sync at the crank and cam sensors, FICM, PCM, injectors, high pressure oil system, fuel supply etc. it didn't help a lot. With fuel in the upper filter housing, it would seem the pump and lines are ok to that point (pressure and volume may still be an issue). Knowing ICP and IPR would be good, along with sync status and FICM power. On the farm if a diesel has a problem it's never a bad idea to throw som fuel filters in before getting too bogged down in details. We change them by mileage but that assumes decent fuel, one bad tank can trash even a new filter.
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Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 349
From: Breckenridge, TX
Quick (and very messy) test would be to remove the fuel return to tank line on the HFCM and see if diesel comes out when someone turns the key to on-not cranking. Upper/rear line on the cover.
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Laughing Gas
Joined: May 2009
Posts: 753
Likes: 0
From: Mesa,AZ
By spraying the brake fluid you skipped everything in the fuel system including sync at the crank and cam sensors, FICM, PCM, injectors, high pressure oil system, fuel supply etc. it didn't help a lot. With fuel in the upper filter housing, it would seem the pump and lines are ok to that point (pressure and volume may still be an issue). Knowing ICP and IPR would be good, along with sync status and FICM power. On the farm if a diesel has a problem it's never a bad idea to throw som fuel filters in before getting too bogged down in details. We change them by mileage but that assumes decent fuel, one bad tank can trash even a new filter.
Fleet Mechanic
Joined: Aug 2013
Posts: 1,313
Likes: 19
From: Louisiana
I just changed the fuel filters and the upper housing is filling with fuel. I change the fuel filters every other oil change, so they were due in about 4k. So the ficm is reading 49 volts. I am charging my batteries at this point due to the fact they are run down. they are at the 4 year mark. Plus AZ heat, running flashers for 5 hours and screwing around with different things. Tomorrow when they are charged I will try and get more readings. My ICP was fine yesterday when I was driving. I might have gone south when I lost power but I was too busy looking for a place to get off the road.
Lead Driver
Joined: Mar 2010
Posts: 5,505
Likes: 256
From: Woodbridge, Ontario, CA
In my experience, a sudden engine shutdown mimicking the same symptom as someone accidentally turning the ignition off, has been repaired successfully with an IPR valve replacement 90% of the time, if the actual cause is a sudden loss of sufficient ICP psi. Even more so, is if this is an '05 and up truck.