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ronman

Got some codes...

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ronman

I spoke to moparman this evening as I was being tow-strapped back home from Melbourne to Orlando by my friend's Duramax. :duh:I had zero symptoms of any problem before this afternoon. While towing my fifth wheel camper home from a race, on flat, level ground as is usual for Florida, I had an instantaneous loss of power. I shifted into neutral and coasted the rig off to the shoulder, and tried to restart. It cranked endlessly but would not fire. I decided to crack the #1 injector open to see if I was getting any fuel, and saw none. Ditto cylinders 3 and 4.Then I cycled the key and verified that I could hear the lift pump operating, and could. I loosened the pressure regulator banjo bolt to see if fuel was getting to the pump, and plenty of fuel poured out. The only code I was able to retrieve from the "key trick" was a P1963.At that point I didn't know what else to do, so I called a friend with a hitch to come get the trailer, and we pulled the truck to a nearby Walmart to park it while we took the trailer home. After getting back to the Walmart several hours later, I attempted to start the truck and much to my surprise it fired right up. No smoke, no funny noises, nothing, until I gave it a little gas, and then it felt like it was completely defueling and wouldn't rev over 1200rpm from an idle of ~800.So, we strapped up and headed out. Getting strap-towed nearly 70 miles was a first for me, but it was uneventful. Now that it's home, I hooked up the autotap and got the following:P0251 P1689P1688So, is the IP toast like I think, or is it something cheaper and easier to fix?

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Wild and Free

251 is the internal mechanical pump failure.........sorry time for a vp44Other 2 codes are vp44 failure codes also.you can Get a package deal from several diesel vendors for an aftermarket fuel transfer pump and vp44. time to do some shopping.

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Mopar1973Man
white01

hello and welcome to the site!!

--- Update to the previous post...

i see that you don't have your sig filled out...so if you have the stock lift pump..it needs to be tossed and get a good pusher pump.fass and airdog come to mind because they have a lifetime warranty..3/8's or 1/2" fuel lines and put it on a 2 cycle diet..1 oz. to 1 gallon is the correct ratio.with doing all of this there is a day and night difference and you will be glad that you did this.:thumb1:

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Wild and Free

Get a fuel pressure gauge also.

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ronman

I have in fact had it on a 2-stroke diet, although nowhere near 1oz/gal. I had been reading elsewhere that people were doing something like 6-8oz/tank, so that's what I was doing. I have the stock, block-mounted LP, so it never even had the factory "upgrade" or whatever it's called done to it...

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Mopar1973Man

At 200:1 ratio the HFRR score is low any ways... That why the 128:1 ratio was taken because it exceeds the orignal requirements for fuel lubricity by Bosch...

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I'm pretty sure 128:1 is less than 400 HFRR socre...

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200:1 Ratio scored a worse case at 474 HFRR...

Todays fuel at ~520 HFRR which is marginal at best! :duh:

Then...

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Heavyd1980

yes i agree with w&f you need a good lift pump, new vp, fuel pressure gauge, and a 2 cycle diet. i think over at diesel auto power he has some package deals with a new vp and lift pump! good luck:)

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