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Old 01-02-2016, 03:51 AM   #1
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Broke down need help!

I have a 2007 35DH Phaeton with a 350 cat pusher, my fuel sending unit is not accurate and needs replaced. We are enroute to Yuma where I have made arrangement to have it replaced but in the mean time the I ran the fuel down to 50% in the tank and got a low fuel alarm. shortly after this I got a check engine light and the engine shut down and won't restart. The low fuel alarm is still on, could this keep the engine from starting? I had it towed to a shop but the mechanic doesn't seem to think thats a problem because of some other codes on the diagnostic? I am wondering if the ECM is keeping the fuel solenoid closed because of the alarm?

thanks in advance!

Bill
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Old 01-02-2016, 04:40 AM   #2
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I doubt the low fuel alarm would shut you down. Its a reminder to get fuel.

In thinking you have other problems.
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Old 01-02-2016, 06:22 AM   #3
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Use the TruckDown application to find a local mobile service.

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Old 01-02-2016, 06:57 AM   #4
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If the mechanic doesn't know what it takes to fix the other diagnostic codes.
Then you need a different Cat shop that knows what it is doing.
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Old 01-02-2016, 10:54 AM   #5
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Have the guy give you a full list of the codes and Google them.

Also look at getting your own reader...Just the cheapest one you can get as they will read the codes same as high dollar one.
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Old 01-02-2016, 12:02 PM   #6
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Is you fuel line cracked or broken, per chance?

Happened to me, but was obvious when I opened the hatch.
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Old 01-02-2016, 07:22 PM   #7
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If your Cat has the prime pump on the secondary filter try to prime for resistance, this takes a bunch of strokes. If you get resistance you have fuel to the motor, if not replace fuel filters. This seems to take care of a lot of the start type fuel problems. Have you added fuel to the tank to get above the 50%. There is also the fuel shut off on the motor that sometimes gets hung up, it's electrical mechanical and it is also a possible that something is preventing it from getting the signal to allow fuel flow.

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Old 01-02-2016, 08:52 PM   #8
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Have you tried calling Cat? Or Freightliner(if applicable)?


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Old 01-02-2016, 09:42 PM   #9
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"fuel sending unit is not accurate and needs replaced" "ran the fuel down to 50%" How did you determine fuel is at 50%?
Diesel fuel level sending units are known for being inaccurate. Mine seems accurate, BUT, I always keep track of miles driven after each fill-up to double check the gauge.
Not starting will not be caused by the low fuel sensor, it only warns the driver that if they continue to drive without re-fueling they will run out of fuel.
I hope you've gotten repairs completed by now, and are parked in a safe place.
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Old 01-02-2016, 10:20 PM   #10
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Quote:
Originally Posted by Ray,IN View Post
"fuel sending unit is not accurate and needs replaced" "ran the fuel down to 50%" How did you determine fuel is at 50%?
Diesel fuel level sending units are known for being inaccurate. Mine seems accurate, BUT, I always keep track of miles driven after each fill-up to double check the gauge.
Not starting will not be caused by the low fuel sensor, it only warns the driver that if they continue to drive without re-fueling they will run out of fuel.
I hope you've gotten repairs completed by now, and are parked in a safe place.
He knows his mpg and he knows his fuel tank capacity. Simple math actually.
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Old 01-03-2016, 07:41 AM   #11
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The mechanic determined that I didn't run out of fuel, and after adding 30 gallons of fuel the warning light went out. His diagnostic programs shows low fuel pressure from the pump, new pump on order hopefully up and running by wednesday. Thanks to everyone for the suggestions, this sure sucks being broke down on the road!
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Old 01-03-2016, 07:54 AM   #12
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Originally Posted by Highmiles77 View Post
The mechanic determined that I didn't run out of fuel, and after adding 30 gallons of fuel the warning light went out. His diagnostic programs shows low fuel pressure from the pump, new pump on order hopefully up and running by wednesday. Thanks to everyone for the suggestions, this sure sucks being broke down on the road!

If your pump is going out and and providing less than adequate fuel pressure, the height of the added fuel in your tank may help compensate for the malfunctioning fuel pump. Hope that is all that is wrong and that you are on your way soon!
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Old 01-03-2016, 10:27 AM   #13
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the first thing i would do is to get new fuel filters. do it regardless.
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Old 01-03-2016, 10:31 AM   #14
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the first thing i would do is to get new fuel filters. do it regardless.
Cheap diagnostic first step, and won't hurt a thing unless they are installed cross threaded, threads get stripped, or your arm drops off running the priming pump because they weren't filled with fuel before they were installed.

Ask me how I know!
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