Fuel Pump Question

EriCRD05 · **Posted:** Tue May 11, 2010 9:14 am

Well for the last week ive been haveing problems with my jeep not starting and i thought i fixed it but turns out i was wrong. viewtopic.php?f=5&t=52433

But anyways my dad made me get it towed to the closest jeep dealership that would have any idea what they were doin and what they came up with was its the Fuel Pump. Now i searched and searched and i cant find a thing on any fuel pumps going bad. But the BIG problem i have with them telling me its the fuel pump is they quoted me $2500 just for the pump. I pretty much laughed at him and told him i could get one off moparpartsamerica for $66.49.
http://www.moparpartsamerica.com/partlo ... atalogid=0

So my question is, is the fuel pump on moparpartsamerica the same mechanical fuel pump that i would need or is this another case of a MAP sensor/Boost Sensor part mix up?????

Joe Romas · **Posted:** Tue May 11, 2010 9:25 am

The only fuel pump on a stock CRD is the Bosch CP3 and they are not cheap! I don't know what Moparts has for $66 dollars but if' it's a CP3 it's the buy of the century :-)r

There have been a couple of people having pump problems that I suspect were caused by contamination when the system was opened.

onthehunt · **Posted:** Tue May 11, 2010 10:13 am

I hope they at least tried a new fuel head first. If they did, chalk another cp3 trashed by a Cat fuel filter mod. You are not the first...

nursecosmo · **Posted:** Tue May 11, 2010 10:56 am

First understand the difference between the fuel pump (usually refereed to as lift pump here), and the injection pump.

As they come from the factory, there is no lift pump in the tank. There should have been one but there isn't. The only lift pump we got from Chrysler is one mounted directly on the front of the injection pump. It supplies fuel at low pressure to feed the IP.

The Injection pump is what the shop quoted you $2500 to replace. This is the unit which supplies high pressure fuel to the injectors.

You almost certainly DON'T have a failed injection pump. The fact that you were able to restart your engine indicates that the IP is fine. Indeed, they are almost bulletproof and are one of the most frequently replaced parts on our Jeeps because of misdiagnosis from poorly educated or lazy technicians.

You already mentioned a bad air in fuel issue in your previous thread, so we know that it was likely the cause of your stumbling and shutdown. Loose the faulty CAT filter, replace the filter head with the updated one from Crystler , make sure that as much air as possible is primed out of the system (you wont be able to get it all out), then restart. It will require a lot of cranking if air has gotten into the IP itself and the fuel rail. An in-line or in-tank fuel pump will make this all much easier and prevent it happening again as well.

Good luck.

ATXKJ · **Posted:** Tue May 11, 2010 11:54 am

The right one should be

Description Year MSRP Price Your Price
Injection pump, liberty, 2.8l 2005 $2,445.00 $1,627.76

so what's in EriCRD05's link??
MoparParts America is listing a fuel pump for an 05 2.8L for $66.?????????

EriCRD05 · **Posted:** Tue May 11, 2010 4:50 pm

Well i just got off the phone with them and they guaranteed me that it was the injection pump that was bad. They found one for $1599 and it will be here tomarrow. So we'll see if that's the problem but for that much it better make my Jeep fly or at least do tricks.

racertracer · **Posted:** Wed May 12, 2010 5:50 am

Keep the old pump.

Tell the service manager that you want to keep the old CP3 they remove from your vehicle.

I agree with the others stating that there is nothing wrong with it and the dealer misdiagnosed the problem. Most of us would love to have it tested.

Big Montana · **Posted:** Wed May 12, 2010 9:16 pm

I have a feeling with my Jeep is headed this way. Now the lift pump has taken on a new meaning to me. I hope I don't toast my IP because my fuel system is taking in air.

nursecosmo · **Posted:** Wed May 12, 2010 11:32 pm

Lift pump, lift pump, lift pump. Oh yeah, and also; lift pump.

warp2diesel · **Posted:** Thu May 13, 2010 6:27 am

One way golfers spot a Chicago Politician on the Green is that he is the one wiping out the cup. These guys sound like they have done that and ran out of their case of TP.
Get your CRD out of there and take it to some one who knows what they are doing.
Air leaks in the fuel system is the oldest plague of diesel engines from day one when Bosch invented the injection pump. Our CRDs suffer from Bean Counter Engineering on the fuel system by not having a lift pump from the factory. Duramax went through the same problem and Kennedy Diesel came up with a neat lift pump some of our members use, others have put a Dodge Cummins into the tank. True some have gotten by with out adding the lift pump and some Women can eat like a line backer and not gain a pond, both exist but are few and far between.
Let us know where you are so we can send you in the right direction. If we can't find someone in your area, look for some shop that works on modern common rail diesels. All Duramax, Dodge Cummins'03 up, and Sprinter Vans are all common rail.

Good Luck

dkenny · **Posted:** Thu May 13, 2010 7:17 am

first I wold put a lift pump in..purge all the air from the lines.
clean the map first.
will it start..if so it not likely the CP3 is bad..
if it won't start..it sound exactly like what happened to my wife's jeep.
at first it would start but would not accelerate. if I tried to accelerate it would die..but then restart.
then it just would start..no fire..nothing..all this with a lift pump..

changed the CP3 and it runs fine now..so they do go bad.

how many mile to have? think about having them change the timing belt. maybe even some of the other items.

-dkenny

nursecosmo · **Posted:** Thu May 13, 2010 4:22 pm

There are known to go bad at times. But more often than not, the problem is something else entirely. I've probably bought over a dozen really cheap VWs, Volvos, Audis, Fords, and Isuzus over the years, which I was able to get cheap because they had all been diagnosed as having bad IPs. I never had to replace an IP in a single one to get it on the road. They were all either Air related, or glow plug related. When IPs go bad they generally Gradually lose power over time with more and more difficult starting, usually first being manifest in cold weather when the tolerances are looser. A common rail system manifests in the same way, generally tripping a low rail pressure code off and on for long before the pump is actually unable to produce sufficient pressure. If one of the cascade valves suddenly fails, the pressure will never be absolute zero as is often reported, but rather they will simply be unable to inject sufficient fuel for effective firring.

dkenny · **Posted:** Thu May 13, 2010 5:53 pm

yes.
I agree the pumps seem to very reliable. so check everything else first. then the pump.
I was down to injectors, fuel rail or CP3.. turned out to be the CP3.

I didn't find any good ways to test the fuel rail..the sensors the relief valve. or the injectors.
ours didn't die that way.. it was just weak ( died during acceleration) then nothing.

-dkenny

dirtmover · **Posted:** Thu May 13, 2010 6:52 pm

warp2diesel wrote:

True some have gotten by with out adding the lift pump and some Women can eat like a line backer and not gain a pond, both exist but are few and far between.

This is an interesting statement. I wonder how many of the 11,000 CRD's manufactured have actually had a lift pump installed. I would hazard a guess of less than 10%.

onthehunt · **Posted:** Thu May 13, 2010 8:11 pm

I would guess less than 1%

CATCRD · **Posted:** Thu May 13, 2010 10:28 pm

dirtmover wrote:

warp2diesel wrote:

True some have gotten by with out adding the lift pump and some Women can eat like a line backer and not gain a pond, both exist but are few and far between.

This is an interesting statement. I wonder how many of the 11,000 CRD's manufactured have actually had a lift pump installed. I would hazard a guess of less than 10%.

And most of the rest wonder briefly why their jeep occasionally runs rough in the morning, hesitates, or dies, before the thought evaporates from their head. They are not LOST members. (And they probably sleep better for it, not worrying about air in fuel.)

nursecosmo · **Posted:** Thu May 13, 2010 11:37 pm

Every single CRD owner who I have spoken with, who was not a lost member (all 5 of them), got rid of their Jeeps because of mechanical issues like frequent trips to the dealer to have the filter head primed. The smart ones (subjective term) did an internet search and ended up here.

Joe Romas · **Posted:** Fri May 14, 2010 6:55 am

nursecosmo wrote:

Every single CRD owner who I have spoken with, who was not a lost member (all 5 of them), got rid of their Jeeps because of mechanical issues like frequent trips to the dealer to have the filter head primed. The smart ones (subjective term) did an internet search and ended up here.

I know of one such person who had his CRD lemoned for it :juggle:

EriCRD05 · **Posted:** Fri May 14, 2010 8:06 am

dkenny wrote:

how many mile to have?

67,000

BVCRD · **Posted:** Fri May 14, 2010 10:39 am

nursecosmo wrote:

Every single CRD owner who I have spoken with, who was not a lost member (all 5 of them), got rid of their Jeeps because of mechanical issues like frequent trips to the dealer to have the filter head primed. The smart ones (subjective term) did an internet search and ended up here.

Then there is the forum guru ( Old Navy) that got rid of his because of the issues. :oops:

Fuel Pump Question

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