Ive got a 99 24 valve CTD. I recently did a fuel pressure check on the lift pump and found it to be junk. I replaced the lift pump. Ive done a search and found several threads mentioning that the lift pump will take out the Injector pump. None that Ive found say how to tell if has been dammaged. It seems to run great but Im driving 3000 miles round trip to Moab pulling a 15k gooseneck. I just want to be sure the thing is not gonna leave me walking. Does the injector pump lock up if it fails or just not have as much power as it could.

Mike

Ive got a 99 24 valve CTD. I recently did a fuel pressure check on the lift pump and found it to be junk. I replaced the lift pump. Ive done a search and found several threads mentioning that the lift pump will take out the Injector pump. None that Ive found say how to tell if has been dammaged. It seems to run great but Im driving 3000 miles round trip to Moab pulling a 15k gooseneck. I just want to be sure the thing is not gonna leave me walking. Does the injector pump lock up if it fails or just not have as much power as it could.

Mike

Ours just quit when the lift pump died. What a POS design. If you caught it soon enough, it should be OK. Just check the pressure at the injectors.

POS design for sure. Think of how much trouble could have been saved if they would have done something as simple as an idiot light on the lift pump pressure. They do it for engine oil! Granted Id rather have gauges but honestly, how much would an idiot light set up have cost Chrysler? Or/and put the damn pump in the tank in the first place. It kinda sucks to find out the hard way. I didnt know anything about diesels but Im learning fast... I just hope its fast enough.

If you want to help add life to the pump add a pusher pump. The whole problem they have is that the lift pump is just not strong enough to pull the amount of full needed. Any time you kill the injection pump you will know it. The best solution is a 12v just kidding.

Ive been told by a local shop the injector pump will fail within a couple months because it will eat itself up since the internals are certainly scared from low lift pump pressure. He also was trying like hell to sell me one for $1450. This guy has never seen the truck, this info was over the phone. The rig seems to run great, always has. I just want to know if I should be worring about this or is someone tring to pimp me. Im also trying to find out if it fails will it just die or will it just have less power?

Mike

Mine gave me e check engine light for pump timing failure and lasted for over a month before I replaced it. It was still running when i replaced it but sometimes when I laid into the throttle, there would be nothing. The truck would act like I didn't touch the throttle and then about 5 seconds later, with the peddle to the floor the whole time, it would roar into life. That's all it really did. Oh, also developed a hard start issue when it was warm. Sure sucked but it never stranded me.
I would recommend getting a FASS or something to keep that injection pump happy. I did, and I don't have to worry about replacing another 1100 dollar pump! :D
I bought my FASS from J&H Performance in Redding CA. http://www.jandhperformance.net

Thats kinda what I was hoping. Im definatly going to get a FASS too. Im gonna wait till I get back from Moab. I would hope that the lift pump could last at least one 3000 mile trip!

Mike

Thats kinda what I was hoping. Im definatly going to get a FASS too. Im gonna wait till I get back from Moab. I would hope that the lift pump could last at least one 3000 mile trip!

Mike


If in doubt, change it out. It is fast and easy insurance against killing a $1500 injector pump + trying to get service in the stix around Moab.

Where is the best deal on a lift pump? I too have a 99 CTD 122K miles. All of the talk about the lift pump has me worried. I am heading out to Katemcy towing a Cruiser in about a week and a half and will be changing it before I go. I also wanted to know if you can hook up a pressure guage (under hood) to the top of the fuel filter housing. There are 2 pressure check ports on the top according to All Data.

Thanks!

Where is the best deal on a lift pump? I too have a 99 CTD 122K miles. All of the talk about the lift pump has me worried. I am heading out to Katemcy towing a Cruiser in about a week and a half and will be changing it before I go. I also wanted to know if you can hook up a pressure guage (under hood) to the top of the fuel filter housing. There are 2 pressure check ports on the top according to All Data.

Thanks!

Its the furthest port forward on top of the fuel filter housing. Ive been told It should have no less than 12 psi at Idle and 6 under heavy load. After I installed the new pump it stayed at a steady 16psi. Ive been told it wont last. :(

Mike

If in doubt, change it out. It is fast and easy insurance against killing a $1500 injector pump + trying to get service in the stix around Moab.

I already changed the lift pump.

I already changed the lift pump.

How much of a job was the lift pump install? Looks like theres not too much to it.

Later

I have put about 20K on my truck since i put a new lift pump in it. My truck wouldn't even start my lift pump was so bad when i go the truck(dumb newbie mistake in not knowing more than i should have before i bought the truck) anyway the truck has been running fine...i think the least thing you can do is add the bored out banjo bolts that one of the performance places sells its like 25.00 bucks for all of them.

On place was selling rebuilt injector pumps for like 1100 w/core...don't remember who though.

Stew

The best thing to do with 98.5 - 02 CTDs is to install a permanent indash fuel pressure gauge.

I already changed the lift pump.

I did not see that. All you can do now is run it till it dies. It might be ok. Just stash $1500 for a rainy day. :D

How much of a job was the lift pump install? Looks like theres not too much to it.

Later

It was a ten minute job. Piece of cake.

Mike

The best thing to do with 98.5 - 02 CTDs is to install a permanent indash fuel pressure gauge.

What guage and where did you get it? I looked at one that used an isolater and uses anti-freeze for the in-cab portion of the line.

What guage and where did you get it? I looked at one that used an isolater and uses anti-freeze for the in-cab portion of the line.


http://www.piersdiesel.com/Gauges.htm

I got a Westach fuel pressure gauge from Geno's Garage. It is a pretty easy install except I never got the light working on it. JC

best price on a lift pump is from your local cummins dealer if you have one.

just bought one last week, was $161. Not exactly sure how much the dealer charges since people said proabably double, i didn't even bother checking.

next up for me is gauges and then wait till the VP44 gives up the ghost. hopefully a long time from now.

best price on a lift pump is from your local cummins dealer if you have one.

just bought one last week, was $161. Not exactly sure how much the dealer charges since people said proabably double, i didn't even bother checking.

next up for me is gauges and then wait till the VP44 gives up the ghost. hopefully a long time from now.

161! Wow, I paid just over $300 from the Dodge dealer. They should be giving those things away with an apoligy!
:flipoff2:

Mike

Yep I got a quote of $340 from the local Dodge stealer and $160 even from the cummins dealer. Took them a day to get it though where the Dodge place had it in stock. For $180 I can wait a day.

Just bought a lift pump from www.hoeslidiesel.com for $129 (monthly special) and it came with the pig-tail. I think the total with the washers and shipping was $140. I took the pump from the Cummins folks back. With all I had to have the total from Cummins was $192. The guys from Hoesli were great. They offer a low pressure light for around $50 also.

Later,

Its the furthest port forward on top of the fuel filter housing. Ive been told It should have no less than 12 psi at Idle and 6 under heavy load. After I installed the new pump it stayed at a steady 16psi. Ive been told it wont last. :(

Mike

I checked my pressure this weekend and it was a steady 8 psi at idle so I went ahead and replaced the pump with one from Cummins. I checked the pressure again and it was a fairly steady ~14 psi at idle. Both times I checked the pressure just ahead of the pump before the filter. Is 13-14 good enough for a new stock pump or should I take this pump back?

I checked my pressure this weekend and it was a steady 8 psi at idle so I went ahead and replaced the pump with one from Cummins. I checked the pressure again and it was a fairly steady ~14 psi at idle. Both times I checked the pressure just ahead of the pump before the filter. Is 13-14 good enough for a new stock pump or should I take this pump back?

I bought mine from the Dodge dealer. They said it was an updated version. I assumed that to be BS but it did look different than the one I took out. BTW the one I took out had also been replaced before. One nut was missing and the wire loom connector was broke. Both said Carter on them but were definatly different. Mabey you just have a different version and your PSI is normal for your pump.

Mike

I tried to get a pressure reading with a 30 psi guage from Summit and couldn't get it to read. I screwed it into the filter housing (hole closest to the front of the truck) Is this wrong? What kind of guage are yall checking the psi with?

Thanks!

I tried to get a pressure reading with a 30 psi guage from Summit and couldn't get it to read. I screwed it into the filter housing (hole closest to the front of the truck) Is this wrong? What kind of guage are yall checking the psi with?

Thanks!

I used a 20psi fuel pressure gauge from the local parts store. sounds like your doing it right. Either your pressure is Fked or you got a bad gauge.

Mike

Wouldn't the truck be running like crap if the pressure was Fked? Runs fine with good power.???

I checked my pump pressure at the NWBombers party, was hitting 4.5psi at WOT. From my reading, you don't ever wanna see below 7psi or you're doing damage.

I was just gonna replace the lift pump, took about 1/2hr to pull it. I had the weird attached pigtail style and nobody had a spare, so I sprung for the $350 mini-FASS (no filters). It was pretty straight-forward to install. The only tricky things were getting the fuel line off the tank (get some good pliers & be patient) and mounting the bracket (I had to bend mine 10 degrees to use the closest crossmember to the tank, and I had to use a 90 degree drill for clearance). It took about 3 hrs with borrowed tools, crappy work area and no sleep. I could probably do it in 1.5hrs in my own garage.

IMO, don't bother with another stock lift pump that you know is gonna go out. Go FASS, or that other aftermarket electric. Or go RASP if you're into the mechanical pump with pullies and shit thing.

-J

Wouldn't the truck be running like crap if the pressure was Fked? Runs fine with good power.???

Going from 4.5psi to 15psi, I picked up enough power to spin the tires and got back about 2mpg. Butt dyno says 20hp, 30ft/lbs :)

-J

OK, I checked the pressure at the forward most pressure check point on the filter housing. I have tried 2 30 psi guages and got nothing. Just for kicks I took the guage off and bumped the starter to see if I could get it to force fuel out of the hole.... Nothing! Surely the truck wouldn't even run with the lift pump not working.??? I drove the truck home and it runs fine. Am I doing something wrong? I am installing a new lift pump tomorrow! I have a 670 mile trip on Wed. towing an FJ40 so I need to get this sorted out.

It will seem to run fine without the lift pump. You will probably notice that you gain some power when you fix it though. You might want to save some money for an injector pump if you think it has been running like this a while. I have guages on mine and I was on a trip to pick up some swampers and about 100 miles from home the fuel pressure slowly started to drop off. I kept going because it was the middle of the night. When we got home it was showing 2 pounds of pressure. I have put on another 8000 miles since then and its still fine. Without any pressure though a lot of guys say the injector pump will go within 1000 or so miles. Good luck!

Thanks for the info. What are the symptoms for Inj. pump failing so I will know what's up on the way home from Katemcy? Man, I sure hope that doesn't happen. That would suck!

Later,

Usually it will be hard to start have less and less power. Soemtimes it will randomly stall and sometimes there will be no throttle response. They usually give some warning before they leave you stranded at least. LAter.

Got the pump on today and I have 15 psi running. Hope it the injection pump holds up for a while. Thanks for all of the help and I'm sorry for hijacking this thread.

Later,

I swap these pumps out constantly at work. Most all of Cummins engines use them now. All they are is glorified, overpriced Carter fuel pumps.
Cummins has gone to inline rotary pumps on the newer ISBe, ISC and ISL emissions engines. Here is the kicker. To replace these pumps (which are more fragile than the Carters) you have to remove several fuel lines, the ECM and the ECM cooling plate. Took a crappy pump that performed poorly and took 20 minutes to replace, and replaced with a worse pump that now takes a day to replace. :shaking: Fawk Cummins.

Well, I towed my FJ40 1340 miles last week with no problems. I guess I didn't do any damage to the Inj. Pump or it would have gone out somewhere on the trip I guess. I installed a fuel press. guage on the filter housing and I am still getting 16 psi. We'll see.???

Later,

Well I made it back from moab. 3600 miles round trip towing a estamated 12k pound gooseneck. The pump seemed to work fine. Its starting to sound like people were just trying to sell me a pump. I just thought Id let you all know for future referance.

Mike