Engine/Transmission (1998.5 - 2002) Dead '99

[TEasley]

My first post on this forum. I'm on the 12 V. Last night, my son-in-law's '99 died instantly at about 40 mph in traffic, prompting something no one sees; a Cummins under tow. (By another CTD at least, not a Ferd or a Groaner).

Everything else seems to be working. Lift pump runs, buzzers work, fluids good, plenty of diesel (except apparently at the injectors). We didn't crack an injector line, I theorized that if fuel was reaching the injectors, "Viola", it would be running. We also substituted the fuel control relay in the panel. I noticed that he has an Edge box on top of the panel cover. I couldn't find the fuel shutoff solenoid. Is it a likely culprit, or are there other more probable causes? Where the heck is the fuel shutoff solenoid anyway? My service manual and limited experience are on 12 V's.



The electronic fuel management system is a mystery to me, and we would appreciate any advice, etc.



Thanks, Tom

 

[WardJ]

My first post on this forum. I'm on the 12 V. Last night, my son-in-law's '99 died instantly at about 40 mph in traffic, prompting something no one sees; a Cummins under tow. (By another CTD at least, not a Ferd or a Groaner).

Everything else seems to be working. Lift pump runs, buzzers work, fluids good, plenty of diesel (except apparently at the injectors). We didn't crack an injector line, I theorized that if fuel was reaching the injectors, "Viola", it would be running. We also substituted the fuel control relay in the panel. I noticed that he has an Edge box on top of the panel cover. I couldn't find the fuel shutoff solenoid. Is it a likely culprit, or are there other more probable causes? Where the heck is the fuel shutoff solenoid anyway? My service manual and limited experience are on 12 V's.



The electronic fuel management system is a mystery to me, and we would appreciate any advice, etc.



Thanks, Tom

Tom, there is no solenoid in

these trucks. The VP44 is totally controlled by computer. What kind of fuel pressure are you seeing after the filter?





Jack

 

[dclassens]

I lost a VP and ironically the APPS at the same time. I thought the APPS was making my VP act funny, but I was pulling a vacuum when I put my fuel press gauge on. I have a feeling that you lost the VP. I have read LOTS of posts about no warning when VP goes. Good luck, and you will have to get out your wallet. . :{ :{



Dave

 

[TEasley]

Jack, his sender had crapped out, so we don't know what the fuel pressure is.



Dave, based on what you and Jack said, I recommended that we tow it to a local shop that specializes in CTD's and get an analyzer on it. However, there is a chance that Gerald may be able to tell him on the phone something to try . We're hoping that it isn't the VP, but it's a slim hope.



Thanks to both of you. We know where to start now. Tom

 

[dclassens]

I would have it towed in and check fuel press first. My truck had a APPS(pedal position sensor) issue. Had the APPS not gone bad, the VP44 that was about to go would not have been discovered. My pump was pulling vacuum(neg pres. ).



If your issue turns out to be a bad VP44, the are some awesome videos links on do it your self VP change. VERY VERY good. Lots of data for the project and lots of links for pump suppliers. Cant go wrong with search on TDR



The shop her did a in tank lift pump, new injection pump, and labor for

-+$2300

good luck



Dave

 

[jkalchik]

A month ago, at 70mph southbound out of St. Paul, instant no-fire on my 99, with a CEL. Disengage the clutch, RPMs drop to zero, and I'm back to Armstrong power steering.

No indication of any problem, no prior CEL, no smoke, no bang. Dead VP44.

 

[TEasley]

We got my son-in-law's '99 to Gerald yesterday evening. I didn't have the presence of mind to ask what the trouble code numbers were, but there were 3 of them. The first 2 were not bad, but the last one was a dead VP44. Gerald was pulling the pump off another '99 with the same problem. He said something that got my attention, though. On most of the pumps, it's the module that goes bad, not necessarily the mechanicals, but the module is not available to be changed out by itself. This electronic stuff is Greek to me, but it looks like the module ought to be available if the pump is mechanically serviceable. Sounds logical; if the failure were slow and painful, I'd suspect mechanical, but instant death sounds electronic to me.



O. K. , I'm going back to the 12 V forum where life is simpler.



Thanks to all, Tom

 

[RHARVEY]

Fuel pressure is needed or at least fuel volume... but that in itself WILL NOT keep a VP44 from going toes up. When the electronics die... thats it! You have be running 1" line and 17 lbs of pressure and it will still die.

Example. . 2000 with FASS that idles at 16lbs of fuel pressure. . nothing below 10lbs at WOT... my wife left the parking lot at her work... and the truck just quit... right there in the middle of the street. .

A number of codes showed which included the dreaded P0216. . It has to have fuel pressure to make the mechanical part last longer... but it wont keep the electronics safe. .



Rick