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Discussion Starter #1
I was driving my 1999 Dodge 2500 5.9 Cummins 24 valve, when my engine just quit running, I later checked my codes, the only code it had was P1693.
Now I cannot get my truck to start, anyone had this problem ?, and found a remedy, I could use some ideas as where to start looking.
Thanks in advance:
LloydWright
 

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1693 is a companion Code, go to a parts store and have them read all of the codes with a scanner, the post again.:confused013:
 

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I bet its time for new VP and lift pump!

sent from my android using tapatalk
 

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Probably low pump, hopefully if that is the case the VP is still ok.
 

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i'd order yourself a new lift pump ASAP, and pray for the VP44's life
 

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Discussion Starter #7
Using a snap on scanner I have no codes at all other than the P1693.
I removed a plug from the top of my filter cannister and cycled my ignition several times and I am not getting any fuel at all.
I would like to check my lift pump before buying another one because my VP and Pump both had been replaced last July 2010 before I purchased this pickup from a dealer in Colorado and I live in Kansas.
Can anyone tell me how to check my lift pump of perhaps I may have a relay or sensor that I may need to check also.
Thanks in advance for any information:
Lloyd at [email protected]
 

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Use a relay or a sensor and start testing your fuses. Is your Fuel pump in tank or mounted to the engine.Do you have an aftermarket pump or a stock one
 

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in oder to check for fuel at the filter you have to "bump" the starter. NOT just cycle the ignition,

did truck shut down right after getting on the throttle hard then letting up quick? if so it just air locked and will need to be bled at the injectors, usually any 2 of the first 3 injectors will get it started again

first confirm you have fuel in the tank (gauges well known to read 1/4 or better, and actually be empty)

confirm fuel pressure (with a gauge).



then read this thread its how to diagnois a VP44

Blue Chip Diesel Performance Specialists
 

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Discussion Starter #10
I have a Fass after market pump on the engine which is less than 6 months old.
I was steady driving in town around 30 mph when the engine just quit running, and would not start up again.

lloyd
 

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Go and do what nick g suggested and report back
 

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Do you have a fuel pressure gauge?

If not, you can rent them from your local auto parts store, or you can get a cheap one from Harbor Freight...
Fuel Injection Pump Tester
Costs $20...

All you're looking for is 10 PSI on the gauge when the fuel pump is running. (Turn the key to the Start position for a sec and you'll have 25 sec to get your reading.)

If you get close to 10 PSI, then get a 19mm wrench and loosen the first four injector lines at the engine. (They're easy to get to.)

Crank the engine... Look for fuel spraying out the four lines...

If you get a strong spray from all of them, then your VP44 should be good...
Weak spray or spray from one line and it's toast.

If you're still not sure, look at the thread above at Blue Chip Diesel. It identifies two pins on the VP44 electrical connector where you can put +12v and ground. This will take the computer out of the loop and should let the engine idle.

Good luck.

As far as replacing the VP44, it appears to be a weekend job... Mine's taking forever because I'm doing other things as well.
Videos are on YouTube to teach you how to replace the VP44.
 

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isn't 1693 Inj. pump? been awhile since i haven't had my 24v in over 5yrs since picking up the 12V...
 

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isn't 1693 Inj. pump? been awhile since i haven't had my 24v in over 5yrs since picking up the 12V...
No. 1693 is a "Companion code" it just means that you have some kinda other codes.

If you have no codes, then there is no 1693.
 

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Nickg suggestion is what I would recommend also having that same thing happen to my rig, finding out my fuel gauge is off about 1/4 tank. Crack as many injectors as you can to make it faster and you have to bump start it to get fuel to pump to them. If it's like mine was I had to remove the intake and grid heater and use a little bit of starter fluid to get it to start.
 

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No. 1693 is a "Companion code" it just means that you have some kinda other codes.

If you have no codes, then there is no 1693.
Its been a few yrs since dealing with my 24V i had, when my inj. pump went it was due to the inadiquate fuel pump on the side of the block which had went bad therefore my inj. pump was toast. At that time i was getting the same code, im thankful for my mechanical 12V now..
they only way to know if its that is to check to see if fuel is getting to the inj. pump if not then is the fuel pump on the side of the block which i found out at that time was the same pump they used on gas engines....
Good luck with getting it running again, if your inj pump is toast there is a thread on TDR with detail instructions oh now to remove and install the new one... If ur mechanically inclined it will save you a bunch of money also..
 

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Discussion Starter #17
Thanks everyone for your replies, I tried most of them, which actually allowed me to finally find my problem, What I found was, since the weather was 2 degrees at the time that my truck died, my fuel had frozen, I had not put any anti gel in my fuel tank.
Reading your replies had me checking the fuel system and found that I was not getting fuel to the injectors, so I kept going until I unthawed my fuel system then finally getting the engine started and after bleeding air out the fuel system, all seems well.
Running good again and my fuel gauge with my FASS block lift pump is still reading 17 lbs.
THANKS AGAIN
Lloyd
 

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Im glad u got it figured out but i been seeing post after post bout gel or frozen fuel, i don't treat mine on a regular basis, there has to be alot of stations out there that aren't changing their filters and guys are sucking up water in their trucks...
I have been in neg. weather driving and the truck sitting over nite and have yet to have a gel issue....
Main thing is your back up and running, and with each exp. comes more knowledge
 
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