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  #13  
Old 08-30-2014, 11:12 AM
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Re: WARNING Fuel Tank Pump Failure

"Any skid marks on your briefs?

Pretty close... I laugh about it now but it wasn't so funny then.

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  #14  
Old 08-30-2014, 11:19 AM
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Re: WARNING Fuel Tank Pump Failure

Owning a BMW 335 with HPFP problems causing the car to die I understand the problem. I don't understand where the problem is coming from on the JGC however. I do however keep my tank at 1/4 or above because the fuel pump needs cooling and that cooling comes from the fuel itself. Returning fuel should not need a return fuel pump since pressure alone should push it back to the tank. Don't know if that is the case with this Italian diesel however.
I wonder if the fuel pump is getting unported and causing it to suck air them shut down. Could happen very fast.
Standing by for more information...
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  #15  
Old 08-30-2014, 12:27 PM
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Re: WARNING Fuel Tank Pump Failure

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Originally Posted by Ranger1 View Post
"Any skid marks on your briefs?

Pretty close... I laugh about it now but it wasn't so funny then.
Yeah, pretty scary when it happens.
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  #16  
Old 08-30-2014, 12:40 PM
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Re: WARNING Fuel Tank Pump Failure

another chrysler diesel with fuel pump issues? shocking....

This is why I have a FASS 150 Titanium on my '00 Cummins.
Still wondering why there was never a class action on this issue. The poor fuel pump design which would then caused the Bosch VP44 for fail is a 1500.00 repair.

I really hope the aftermarket picks up on the needs of the 3.0VM.
I'd do a def/egr delete (and get better mileage) along with a real fuel pump in a second.


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  #17  
Old 06-03-2016, 08:49 AM
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Re: WARNING Fuel Tank Pump Failure

Pretty sure I have just had this issue on my Jeep - in at the mechanics getting fixed now...

I went on a 600km trip, was about 540kms in (Very flat drive the whole way), and Jeep basically stopped with 2 codes - High and Low Fuel Rail Pressure. About 1/4 to 1/3 on the fuel gauge. (Wasnt full when I left). Got it towed into the town I was visiting, and after being on the tilt tray truck, started fine at the mechanics.! Fuel pressure reading perfectly.

I progressed to fill it back up, and again drove back home from my trip, approx 1/3 to 1/4 left on the gauge (almost exactly the same as the first trip!) and the jeep failed in the exact same way! (Same codes). This time we were stuck for around 14 hours, every 4-5 hours attempted to start it but wouldnt go.

Again, ride on the tilt tray into the mechanics and it starts up again!!

Im pretty convinced its the same issue as this so thanks for posting..! I live is a reasonable hilly area so i assume that in normal driving in my home area I probably do not rely that much on this Aux pump...

Mine is a 2012 WK2 Grand Cherokee Laredo Diesel...
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Old 06-03-2016, 09:40 AM
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Re: WARNING Fuel Tank Pump Failure

A lot of cars made today use internal fuel pumps that need fuel in the tank to keep it cool and operating properly (long life) but if the fuel tank does not have proper baffling and you run low and go around a fast corner it can starve it and result in early failure. I never go below 1/4 tank on any of my cars except racing where I have a baffled fuel cell in it and it keeps the pump submerged even under 1+ g sustained cornering.
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Old 06-03-2016, 10:15 AM
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Re: WARNING Fuel Tank Pump Failure

Well known on most all cars these days that if you run the tank below 1/4 the pump can't cool properly and overheats.
I have done this only once and never allow my tank to get that low because this isn't just a diesel JGC issue it happens to all in tank pumps gas or diesel...
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Old 06-03-2016, 09:35 PM
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Re: WARNING Fuel Tank Pump Failure

Yea... I rarely go below 1/4 also.

This was in between 1/3 and 1/4... now keeping 1/3 of a tank is starting to limit the range quite a lot. We can sometimes go 300kms (190 ish miles) between the nearest fuel stops.

Im still not convinced this was an overheating problem though, as mentioned was stopped for 14 hours, surely would have cooled by then...
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  #21  
Old 06-04-2016, 12:18 AM
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Re: WARNING Fuel Tank Pump Failure

Quote:
Originally Posted by netboy View Post
^^^This!

Unfortunately our vehicles are very complex machines and are built with little to no redundancy (not even close to a commercial airliner redundancy levels, for example).
If they make our GC even close to commercial airliner redundancy, it will cost over half a mil to buy one.

Not sure what you wanted to say, but it didn't come out right.
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  #22  
Old 06-04-2016, 03:02 AM
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Re: WARNING Fuel Tank Pump Failure

On my previous Audi A4 my fuel pump just died in a busy intersection and people were so pissed at me for stopping which is obviously not my choice and despite my quick press on the hazard lights to show them it was an emergency situation.

Lots of angry honking horns. So yeah apart from trying to survive what just happened you also combat the stupid people annoyed at you being stuck there because you wanted to.

The experience can be nerve racking.


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