XZILR8N

I'm driving down the road doing 50 mph and truck seems to be running just fine. Then I notice I'm slowing down. What the heck. I give it more pedal, nothing just silence. OK, my engine is not running. Fortunately I'm in the right hand lane and traffic is light and I manage to make it off the hi-way to the shoulder and coast to a stop. I try to restart and it doesn't fire up. Wait a couple minutes and it restarts and seems to be idling fine. Put it in gear and it dies after moving about 20 ft. Try to restart and would not run. Wait a couple minutes and it starts then dies after about 15 seconds like it is not getting fuel. I'm thinking lift pump has gone out as my truck has 65k miles on it and is OEM stock with no repairs.

I get a tow truck to take it to my house. I check for codes and come up with P0206. Look that code up and says: "P0206 Fuel Injector 6 Circuit". So what does that mean? Does that indicate I have an electrical problem (wiring harness?) of some sort going to injector 6? Seems odd that it would start up and idle smooth and then die without a whimper after about 15 seconds if it were just one injector circuit. I would think it would have started running rough or never have restarted at all. Although, now it will not fire up. Any trouble shooting tips or suggestions on how to approach this type of code problem?

If this isn't a minor problem like a loose connector or something that I can easily fix myself I'm hoping my engine might still be in warranty since it only has 65k miles and was purchased new Oct 2004. I think DC still had the 7 year 100k engine warranty going on the Cummins engine back then.

whiskers

My brother went through the same symptom on his Duromax.. Turned out to be the connector on his #7 injector. They took forever to figure it out. Finally dimpled the connector with an ice pick, the female, then plugged it in and it's fine since! Maybe with any luck that's what you have going on.

XZILR8N

I went back out this morning after the truck had completely cooled down overnight and rechecked the code just to be sure. Well, now it shows "P0628" which as I understand it, is definetly related to the lift pump (Fuel Pump Relay Circuit Low, or Fuel Lift Pump Circuit Low). Not sure how I could have misread the code the first time. Anyway, this code makes much more sense to me based on the way it died and would restart and then run for a few seconds and then die...fuel starvation indeed!

There are lots of articles on replacing the lift pump so I guess I will do some searches. I think my engine is still in warranty but getting another tow to the dealership would probably cost me as much as buying a premium lift pump.

If anyone has strong recommendations on what to replace the OEM lift pump with please chime in. Since I frequently tow live loads (horses) I want ultra reliability.

madhat

Since you are stock, I would look at a raptor 100, it will come with an adapter to replace your stock fuel pump. It probably takes about 30-45 minutes to do, plug and play. Very easy install.

Those canister mounted pumps were terrible... I'm surprised yours lasted so long.

XZILR8N

Madhat - thanks for the raptor 100 suggestion. I will look into it.

Anyone have suggestions where best place is to buy a raptor 100 and what it would run?

Yeah, I was always was nervous driving with the stock lift pump but my truck was always running so well I thought I had managed to dodge the lift pump demon. Lesson learned that the "if it ain't broke, don't fix it" is not a good rule if evidence suggests otherwise.

madhat

You can get one here at the DTR store... Call Lary for the best pricing... tell him I sent you. Depending on our last conversation, he'll either give you an extra 5% off, or an extra 5% on...

http://www.dodge-diesel.org/raptor100.html

I have pics of an install I did on an 04.5 or an 05, I can't remember which if you want them. Like I said, very easy to do, minimal tools.

XZILR8N

Thanks for the tip, I'll give em a call and see what he can do and will tell him you sent me! Would love to support the DTR store when possible.

I'm looking at my filter assembly and I can see the round cylinder attached to it on backside of the filter assy nearest the firewall side. Does the Raptor 100 mounting plate attach to the same location as the OEM lift pump? From topside it looks like a tight spot to get wrenches into to r/r the lift pump with all the power brake plumbing and brake fluid reservoir in the way. Is it easier to remove the complete filter assy with lift pump attached and then replace pump? Hope it is as easy as you say it should be.

In the meantime, if you do have any pictures I could definetly benefit from seeing any install process shots you or others might have. I looked in your online gallery and didn't see anything that looked like a lift pump job. Any idea if Raptor has a installation PDF I can preview? I didn't notice any at DTR store site.

Thanks for the suggestions and help!

madhat

Yes. The raptor has a bracket that the fuel line hooks into that replaces the OEM pump.

The best way to get to it... put the driver side on a jack stand, remove the front tire and wheel well, then it's easy as pie.

Let me look for the pics.

madhat

I can't find the pic's of the canister, but like I said, if you pull the front wheel well, you will have plenty of room... even more if you pull the front tire. There are two bolts you need to take out for the stock pump... everything else is self explainitory with the directions AD has. Just make sure you tell Lary or whoever you order from that you have a canister mounted fuel pump so you get the right harness...

If you want my number, PM me, I'll give it to you in case you have any questions. I've done it quite a few times, so unless you want some flux capacitor crap, I can help you out

XZILR8N

Excellent! I didn't think about the front wheel well approach. I went out and looked at it and yep it looks pretty easy to get at that way. I had hoped my new six ton jack stands and floor jack were gonna come in handy some day

Thanks for the pic's looks like a nice install.

madhat

It's nothin... easy cheesy.

XZILR8N

OK, so now I go out and just for grins stick the key in to see if it might start. I know it won't but what the heck, I'm bored today. Well what do you know, she fires right up like nothing happened. Hunh? OK, we've been through this yesterday stuck on the side of the road where it would only run for 15-30 seconds and then die. Nope, she continues to run in my driveway for a good 10 minutes. OK, shut her down and see if she will restart, yes she does. OK, lets put it in gear and see if I can pull down the driveway a ways, yep drives just fine.

Soooo, I check for codes and yes the only code, P0628, is still displayed. But that would be there in memory regardless for XX number of restarts, right? I had wiggled all the connectors (before this restart today) to the lift pump and nothing felt like it was loose or clicked into place. Could it be that perhaps there was a slightly loose contact just needing a nudge? So, now I seem to have an intermittant problem. Do these OEM lift pumps go out intermittantly, like it could be heat related or vibration related?

I certainly don't trust it enough to drive it anywhere. I just know its messing with me trying to tempt me into trusting it enough to get it out on the road so I have to flatbed it home again .

If I do go ahead and replace the lift pump it appears that I might have to drop the tank to get at the fuel tank lines. I have a short bed quad cab and I was lucky just to be able to get a mirror up there in that area to see the tank fittings area. I have over 1/2 a tank of fuel so dropping the tank would be a PITA. I can't take off the bed very easily either because I have my TransferFlow tank (~200 lbs empty) plumbed and wired in as well .

I know it is best to replace the, now working for now, OEM lift pump since I'm rolling the dice at 65k miles given that this particular year series pump seems to have a bad reputation for reliability. However, I am uncertain that its not an itermittant wiring problem somewhere. I hate driving something I don't trust 100% to get me home, expecially when towing horses!

What to do to be certain I really fix this problem?

Mr Jerry

I wont say i know much about the OEM pump you have but i thought you could still get that type,,,maybe there cheap buy 2,,one for a soare like the number 4 inj line guys have under the seat.

XZILR8N

Thanks, thats not a bad idea having a spare pump along. Would certainly give me more peace of mind when towing mission critical live loads.

Before I do anything, I think I will give the dealership a call on Monday and have them check to see if my engine is still under warranty, I'm pretty sure it should be (I'm just under 7 yrs and under the 100k mileage). If it is, I'll ask them how they would plan to fix it. I've heard times when they retrofit an intank unit to the 04.5 models. I'm sure there are pro's and cons to that fix.

However, if I can go with the warranty route it might be better so if a new lift pump does not end up fixing the problem I can take it back and its their problem to troubleshoot and they can throw more parts at it.

madhat

The CP3 will pull fuel and run the motor, but when the fuel pump quits, that's all she wrote. It's not a flow through pump, so it will run a little, but not for long.

Turn the key on, but don't start it... can you hear the pump run?

Look in the warranty book that came with your truck, it will tell you if they will cover the fuel pump or not.